public void OfTypeClause()
{
//OfType operator filters the collection based on the ability to cast to a specific type
IList mixedList = new ArrayList();
mixedList.Add(0);
mixedList.Add("One");
mixedList.Add("Two");
mixedList.Add(3);
mixedList.Add(new Student
{
StudentId = 1,
StudentName = "Bill"
});
//output string ony
var stringResult = from s in mixedList.OfType<string>()
select s;
//One
//Two
var studentOut = from s in mixedList.OfType<Student>()
select s;
var mthod = mixedList.OfType<Student>().ToList();
foreach (var student in mthod)
{
Console.WriteLine(student.StudentName);
}
}
public void M5(ArrayList list)
{
foreach (A i in list.OfType<A>()) // Noncompliant
{ }
foreach (var i in list)
{ }
foreach (object i in list)
{ }
foreach (B i in list.OfType<B>()) // Noncompliant
{ }
}
public static Mock<IDataParameterCollection> CreateIDataParameterCollection(this MockRepository repository)
{
var list = new ArrayList(); // ArrayList more closely matches IDataParameterCollection.
var parameters = repository.Create<IDataParameterCollection>();
parameters.Setup(p => p.Add(It.IsAny<IDataParameter>())).Returns((IDataParameter p) => list.Add(p));
parameters.Setup(p => p.Contains(It.IsAny<string>())).Returns((string n) => list.OfType<IDataParameter>().Any(p => p.ParameterName == n));
parameters.Setup(p => p[It.IsAny<int>()]).Returns((int i) => list[i]);
parameters.Setup(p => p[It.IsAny<string>()]).Returns((string n) => list.OfType<IDataParameter>().FirstOrDefault(p => p.ParameterName == n));
parameters.Setup(p => p.Count).Returns(() => list.Count);
return parameters;
}
static void LINQOverArrayList()
{
Console.WriteLine("***** LINQ over ArrayList *****");
// Here is a nongeneric collection of cars.
ArrayList myCars = new ArrayList() {
new Car{ PetName = "Henry", Color = "Silver", Speed = 100, Make = "BMW"},
new Car{ PetName = "Daisy", Color = "Tan", Speed = 90, Make = "BMW"},
new Car{ PetName = "Mary", Color = "Black", Speed = 55, Make = "VW"},
new Car{ PetName = "Clunker", Color = "Rust", Speed = 5, Make = "Yugo"},
new Car{ PetName = "Melvin", Color = "White", Speed = 43, Make = "Ford"}
};
// Transform ArrayList into an IEnumerable<T>-compatible type.
var myCarsEnum = myCars.OfType<Car>();
// Create a query expression.
//var fastCars = from c in myCarsEnum where c.Speed > 55 select c;
var fastCars = myCarsEnum.Where(c => c.Speed > 55).Select(c => c);
foreach (var car in fastCars)
{
Console.WriteLine("{0} is going too fast!", car.PetName);
}
}
static void OfTypeAsFilter()
{
ArrayList myStaff = new ArrayList();
myStaff.AddRange(new object[] {10, 400, 8, false, new Car(), "string data"});
var myInts = myStaff.OfType<int>();
foreach (int i in myInts)
Console.WriteLine("Int value: {0}", i);
}
private void FilterTheShitOut()
{
ArrayList kitchenSink = new ArrayList();
kitchenSink.AddRange(new object[]{10, 20, "asdfa", true, false, 345.67, new ObjWithProps()});
IEnumerable<int> filteredInts = kitchenSink.OfType<int>();
foreach( int i in filteredInts )
Console.WriteLine(i);
}
public static int OfTypeAsFilter() {
var myStuff = new ArrayList();
myStuff.AddRange(new object[] {15, false, new Car {PetName = "BMW", MaxSpeed = 260}, "str1", 559.3, 255, 42.0f, true, new Car("Toyouta", 230, 50) });
var myInts = myStuff.OfType<int>();
var myCars = myStuff.OfType<Car>();
var myDoubles = myStuff.OfType<double>();
var myFloats = myStuff.OfType<float>();
var myBools = myStuff.OfType<bool>();
myInts.PrintEnumerable();
myCars.PrintEnumerable();
myDoubles.PrintEnumerable();
myBools.PrintEnumerable();
myFloats.PrintEnumerable();
return 0;
}
public void OfTypeMethodTest()
{
ArrayList fruits = new System.Collections.ArrayList();
fruits.Add("Mango");
fruits.Add("Orange");
fruits.Add("Apple");
fruits.Add(3.0);
fruits.Add("Banana");
// type을 지정해 그 type으로 cast 할 수 있는 element만 열거
IEnumerable<string> query = fruits.OfType<string>();
Assert.AreEqual(4, query.Count(), "3.0은 제외한 나머지 4개");
}
public void OfTypeMethodTest()
{
ArrayList fruits = new System.Collections.ArrayList();
fruits.Add("Mango");
fruits.Add("Orange");
fruits.Add("Apple");
fruits.Add(3.0);
fruits.Add("Banana");
// type을 지정해 그 type으로 cast 할 수 있는 element만 열거
IEnumerable <string> query = fruits.OfType <string>();
Assert.True(4 == query.Count(), "3.0은 제외한 나머지 4개");
}
public static void Test()
{
ArrayList list = new ArrayList();
list.Add("apple");
list.Add("orange");
list.Add(1);
list.Add(2);
var rst = list.OfType<string>();
foreach (var item in rst)
{
Console.WriteLine(item);
}
Console.ReadLine();
}
static void Main()
{
ArrayList list = new ArrayList { "First", "Second", "Third"};
var strings = list.Cast<string>();
foreach (string item in strings)
{
Console.WriteLine(item);
}
list = new ArrayList { 1, "not an int", 2, 3};
var ints = list.OfType<int>();
foreach (int item in ints)
{
Console.WriteLine(item);
}
}
static void LINQOverArrayList()
{
Console.WriteLine("***** LINQ at ArrayList *****\n");
ArrayList myCars = new ArrayList()
{
new Car{PetName = "Henry", Color = "Silver", Speed = 100, Make = "BMW"},
new Car{PetName = "Daisy", Color = "Tan", Speed = 90, Make = "BMW"},
new Car{PetName = "Mary", Color = "Black", Speed = 55, Make = "VW"},
new Car{PetName = "Clunker", Color = "Rust", Speed = 5, Make = "Yugo"},
new Car{PetName = "Melvin", Color = "White", Speed = 43, Make = "Ford"}
};
var myCarsEnum = myCars.OfType<Car>();
var fastCars = from c in myCarsEnum where c.Speed > 55 select c;
foreach (var car in fastCars)
Console.WriteLine("{0} is going too fast!", car.PetName);
}
private void Frm_Main_Load(object sender, EventArgs e)
{
ArrayList arrList = new ArrayList(); //创建动态数组
arrList.Add(1);//添加动态数组元素
arrList.Add(2);
arrList.Add("A");
arrList.Add(3);
arrList.Add("b");
//使用LINQ筛选动态数组中是string类型的元素
var query = from item in arrList.OfType<string>()
select item;
label1.Text = "是字符串类型的有：";//显示string类型的元素
foreach (var item in query)
{
label1.Text += item + " , ";
}
}
public static int QueryOverArrayList() {
var myCars = new ArrayList() {
new Car{ PetName = "Henry", Color = "Silver", MaxSpeed = 100, Make = "BMW"},
new Car{ PetName = "Daisy", Color = "Tan", MaxSpeed = 90, Make = "BMW"},
new Car{ PetName = "Mary", Color = "Black", MaxSpeed = 55, Make = "VW"},
new Car{ PetName = "Clunker", Color = "Rust", MaxSpeed = 5, Make = "Yugo"},
new Car{ PetName = "Melvin", Color = "White", MaxSpeed = 43, Make = "Ford"}
};
var myCarsEnum = myCars.OfType<Car>();
var fastCars = from c in myCarsEnum where c.MaxSpeed > 55 select c;
fastCars.PrintEnumerable();
return 0;
}
public virtual void Compare(IQueryable baseline)
{
System.Collections.ArrayList baseLineEntities = CommonPayload.CreateList(baseline);
if (this.Resources is PayloadComplexProperty)
{
PayloadComplexProperty complexProperty = (PayloadComplexProperty)this.Resources;
this.CompareComplexType(complexProperty, baseLineEntities[0], false);
}
else if (this.Resources is PayloadSimpleProperty)
{
PayloadSimpleProperty simpleProperty = (PayloadSimpleProperty)this.Resources;
this.CompareSimpleType(simpleProperty, baseLineEntities[0], false);
}
else if (this.Resources is List <PayloadObject> )
{
List <PayloadObject> payloadObjects = (List <PayloadObject>) this.Resources;
Compare(baseLineEntities.OfType <object>().ToList(), payloadObjects, false);
}
}
public static void Main()
{
// Where example
string[] strings = new string[] { "one", "two", "three", "four",
"five", "six", "seven", "eight", "nine", "ten" };
// public static IEnumerable<TSource>
// Where<TSource>(this IEnumerable<TSource> source, Func<TSource, int, bool> predicate);
IEnumerable <string> results = strings.Where(
s =>
s.StartsWith("f") && s.EndsWith("r"));
foreach (var str in results)
{
Console.WriteLine(str);
}
System.Collections.ArrayList fruits = new System.Collections.ArrayList(4);
fruits.Add("Mango");
fruits.Add("Orange");
fruits.Add("Apple");
fruits.Add(3.0);
fruits.Add("Banana");
// Apply OfType() to the ArrayList.
// public static IEnumerable<TResult> OfType<TResult>(this IEnumerable source);
IEnumerable <string> query1 = fruits.OfType <string>();
Console.WriteLine("Elements of type 'string' are:");
foreach (string fruit in query1)
{
Console.WriteLine(fruit);
}
}
private IList SortType(ArrayList findAll)
{
var result = from det in findAll.OfType<ProductType>()
orderby det.TypeName ascending
select det;
return result.ToList();
}
private object PopulateStockOutList(CoralPOS.Models.StockIn selectedStockIn)
{
var details = new ArrayList(StockOutDetails);
foreach (StockInDetail inDetail in selectedStockIn.StockInDetails)
{
Product product = inDetail.Product;
if (!ProductInStockOutList(details, product))
{
// create new stockout detail for that product
StockOutDetail newDetail = DataErrorInfoFactory.Create<StockOutDetail>();
newDetail.Product = inDetail.Product;
newDetail.ProductMaster = inDetail.ProductMaster;
newDetail.CreateDate = DateTime.Now;
newDetail.UpdateDate = DateTime.Now;
newDetail.CreateId = "admin";
newDetail.UpdateId = "admin";
newDetail.Quantity = inDetail.Quantity;
newDetail.StockQuantity = inDetail.Stock.Quantity;
newDetail.GoodQuantity = inDetail.Quantity;
details.Add(newDetail);
}
else
{
StockOutDetail result = (from sod in details.OfType<StockOutDetail>()
where sod.Product.ProductId.Equals(product.ProductId)
select sod).FirstOrDefault();
result.Quantity += inDetail.Quantity;
result.GoodQuantity += inDetail.Quantity;
}
}
StockOutDetails = details;
return null;
}
private object LoadBarcode()
{
if (ObjectUtility.LengthEqual(Barcode, 12))
{
ArrayList details = new ArrayList(StockOutDetails);
StockOutDetail result = (from sod in details.OfType<StockOutDetail>()
where sod.Product.ProductId.Equals(Barcode)
select sod).FirstOrDefault();
if (result != null) // if exist in list
{
result.Quantity += 1;
}
else
{
// get information from database
MainStock stock = MainStockLogic.FindByProductId(Barcode);
// create new stockout detail for that product
StockOutDetail newDetail = DataErrorInfoFactory.Create<StockOutDetail>();
newDetail.Product = stock.Product;
newDetail.ProductMaster = stock.ProductMaster;
newDetail.CreateDate = DateTime.Now;
newDetail.UpdateDate = DateTime.Now;
newDetail.CreateId = "admin";
newDetail.UpdateId = "admin";
newDetail.Quantity = 1;
newDetail.StockQuantity = stock.Quantity;
details.Add(newDetail);
}
StockOutDetails = details;
}
return null;
}
public void CreateByFile()
{
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "*.txt | Text Files";
openFileDialog.CheckFileExists = true;
openFileDialog.ShowDialog();
// if has file to open
if (!string.IsNullOrEmpty(openFileDialog.FileName))
{
IList<string> errorList;
IDictionary<string, long> productList = ObjectUtility.ReadProductList(openFileDialog.FileName, out errorList);
// add to stockOut list
ArrayList details = new ArrayList(StockOutDetails);
foreach (KeyValuePair<string, long> keyValuePair in productList)
{
StockOutDetail result = (from sod in details.OfType<StockOutDetail>()
where sod.Product.ProductId.Equals(keyValuePair.Key)
select sod).FirstOrDefault();
if (result != null) // if exist in list
{
result.Quantity += keyValuePair.Value;
}
else
{
// get information from database
MainStock stock = MainStockLogic.FindByProductId(keyValuePair.Key);
errorList.Add(keyValuePair.Key);
// create new stockout detail for that product
StockOutDetail newDetail = DataErrorInfoFactory.Create<StockOutDetail>();
newDetail.Product = stock.Product;
newDetail.ProductMaster = stock.ProductMaster;
newDetail.CreateDate = DateTime.Now;
newDetail.UpdateDate = DateTime.Now;
newDetail.CreateId = "admin";
newDetail.UpdateId = "admin";
newDetail.Quantity = keyValuePair.Value;
newDetail.StockQuantity = stock.Quantity;
newDetail.GoodQuantity = keyValuePair.Value;
details.Add(newDetail);
}
}
StockOutDetails = details;
}
}
public void TestCastEx()
{
ArrayList fruits = new ArrayList();
fruits.Add("mango");
fruits.Add("apple");
fruits.Add("lemon");
IEnumerable <string> query = fruits.Cast <string>().OrderBy(fruit => fruit).Select(fruit => fruit);
// The following code, without the cast, doesn't compile.
//IEnumerable<string> query1 = fruits.OrderBy(fruit => fruit).Select(fruit => fruit);
foreach (string fruit in query)
{
Console.WriteLine(fruit);
}
// This code produces the following output:
//
// apple
// lemon
// mango
System.Collections.ArrayList fruits2 = new System.Collections.ArrayList(4);
fruits2.Add("Mango");
fruits2.Add("Orange");
fruits2.Add("Apple");
fruits2.Add(3.0);
fruits2.Add("Banana");
// Apply OfType() to the ArrayList.
IEnumerable <string> query1 = fruits2.OfType <string>();
Console.WriteLine("Elements of type 'string' are:");
foreach (string fruit in query1)
{
Console.WriteLine(fruit);
}
// The following query shows that the standard query operators such as
// Where() can be applied to the ArrayList type after calling OfType().
IEnumerable <string> query2 = fruits2.OfType <string>().Where(fruit => fruit.ToLower().Contains("n"));
Console.WriteLine("\nThe following strings contain 'n':");
foreach (string fruit in query2)
{
Console.WriteLine(fruit);
}
// This code produces the following output:
//
// Elements of type 'string' are:
// Mango
// Orange
// Apple
// Banana
//
// The following strings contain 'n':
// Mango
// Orange
// Banana
IEnumerable sequence = Enumerable.Range(0, 10);
var doubles = from int item in sequence
select(double) item;
var list = "1,2,3,4,5,6,7,8,9,10";
var listArr = list.Split(',');
var listInt = listArr.OfType <Int64>().Select(x => x);
foreach (var item in listInt)
{
Console.WriteLine(item);
}
}
/*public static IEnumerable<T> OfType<T>(
* this IEnumerable source);
* */
void OfTypeOperator()
{
ArrayList employees = Employee.GetEmployeesArrayList();
EmployeeOptionEntry[] empOptions = EmployeeOptionEntry.GetEmployeeOptionEntries();
ArrayList al = new ArrayList();
al.Add(employees[0]);
al.Add(employees[1]);
al.Add(empOptions[0]);
al.Add(empOptions[1]);
al.Add(employees[3]);
al.Add(empOptions[3]);
var items = al.Cast<Employee>();
Console.WriteLine("Attemting to use the Cast operator ...");
try
{
foreach (Employee item in items)
{
Console.WriteLine("{0} {1} {2}", item.id, item.firstName, item.lastName);
}
}
catch(Exception ex)
{
Console.WriteLine("{0} {1}", ex.Message, System.Environment.NewLine);
}
Console.WriteLine("Attempting to use the OfType operator...");
var items2 = al.OfType<Employee>();
foreach (Employee item in items2)
{
Console.WriteLine("{0} {1} {2}", item.id, item.firstName, item.lastName);
}
}
static void Main(string[] args)
{
var users = EntityMapper.LoadUsers();
var badges = EntityMapper.LoadBadges();
#region ToList, ToDictionary, ToArray, ToLookup
//In LINQ, the results of our queries are always going to be an IEnumerable of some type
//LINQ operates in a delayed manner, so the following select won't do anything until we interate over it
IEnumerable<User> result = users.Select(u => u);
//Certain operations that need to iterate over the entire enumerable can be expensive, so LINQ provides
//extensions to put the result of a query straight into a collection. This forces the entire result set
//to be put into a list; all the work is done in the following line, rather than when we iterate over it
IEnumerable<User> listResult = users.Select(u => u).ToList();
//Can also put the results of a query into a dictionary by supplying a key; the following gives us a dictionary
//of UserID to User. Of course, you need to be sure that the item used as a key is a unique value
Dictionary<int, User> dict = users.Select(u => u).ToDictionary(u => u.Id);
//A useful overload to ToDictionary takes a keySelector and an elementSelector, which lets us specify what part
//of the user we want to be the values in the dictionary
Dictionary<int, string> newDict = users.Select(u => u).ToDictionary(u => u.Id, u => u.DisplayName);
//Can also cast into an ILookup, a generic interface that can apply to any item that maps a key to a value.
//Unlike a dictionary, ILookup is mapping directly to the Lookup type, which was introduced in 3.5 and acts
//similar to a dictionary, except that you can have repeated keys, and can match a single key to multiple values
ILookup<int, string> ageToName = users.Select(u => u).ToLookup(u => u.Age, u => u.DisplayName);
//Here we've created an IEnumerable<IGrouping>, of age to user display name
foreach (IGrouping<int, string> grouping in ageToName)
{
Console.WriteLine(grouping.Key);
foreach (string displayName in grouping)
Console.WriteLine(displayName);
}
#endregion
#region GroupBy
//We can do a similar thing as ToLookup using the grouping operators, with the added bonus that
//grouping operations benefit from deferred execution, just like the rest of LINQ
var ageGrouping = users.GroupBy(u => u.Age);
//This gives us the same result as the ToLookup example above
foreach (var group in ageGrouping)
{
Console.WriteLine(group.Key);
foreach (var user in group)
Console.WriteLine(user);
}
//Again, we get a useful overload that lets us specify an elementSelector. Here we're getting back a grouping
//of age to displayname, instead of age to user type
var elementSelect = users.GroupBy(u => u.Age, u => u.DisplayName);
//Another overload takes a resultsSelector, a lambda which takes in the key and the values from the grouping and do something with them
var resultSelect = users.GroupBy(u => u.Age, u => u.DisplayName, (key, value) => new { Age = key, Count = value.Count() }).OrderBy(u => u.Count);
//The above projects the grouping into our anonymous type, instead of an IGrouping
foreach (var group in resultSelect)
Console.WriteLine(group.Age + " " + group.Count);
#endregion
#region Join and GroupJoin
//Join operator works just like we'd expect, same as it does in SQL. Basically, we call it on a collection
//and pass in another collection to join to, spec out selector methods for the outer and inner collections,
//and then pass in a result selector describing what we'd like to get back from the join
var joinResult = users.Join(badges,
u => u.Id,
b => b.UserId,
(u, b) => new { User = u, Badge = b });
foreach (var join in joinResult) Console.WriteLine(join.User.DisplayName + " " + join.Badge.Name);
Console .WriteLine();
//We are performing an "inner" join, ie, we aren't getting any results back unless both the left and right
//side have matching values. There are times we might want a "left outer" join - we want a complete list of an entire
//side, whether it has matches on the right side or not. You'll have to use the groupjoin operator...
var groupJoin = users
.GroupJoin(badges,
u => u.Id,
b => b.UserId,
(u, b) => new { User = u, Badges = b.DefaultIfEmpty() })
.SelectMany(a => a.Badges.Select(b => new { User = a.User, Badge = b }));
foreach (var join in groupJoin)
{
Console.WriteLine(join.User.DisplayName + " " +
(join.Badge == null ? "" : join.Badge.Name));
}
Console.WriteLine();
#endregion
#region Zip
//What zip does is let you take two sequences and combine them item by item. Generally the use case for
//zip is when you have two sequences and you need to perform two different queries on them, and you need
//to combine those sequences, sort of like a zipper; first item in list1 goes with first item in list2, etc...
//Result of the following zip operation is just a concatenated string of doubled up user names
var zipTest = users.Take(10).Zip(users.Take(10), (u1, u2) => u1.DisplayName + " " + u2.DisplayName);
foreach (var res in zipTest)
Console.WriteLine(res);
//Of course that's kind of silly. But imagine if the two different values were coming from two different queries
Console.WriteLine();
#endregion
#region Cast and OfType
//Cast lets us take a sequence of types and cast them to another type; really useful with old libraries
//that might use ArrayLists or something
var list = new ArrayList();
list.Add(1);
list.Add(2);
list.Add(3);
//We want to perform some filtering across this list, but in order to perform the predicate, we need some types.
//You can get a strongly typed IEnumerable<int> using cast
var castList = list.Cast<int>().Where(i => i > 1);
Console.WriteLine();
//But you have to be careful with cast - it will throw an exception if all the items in the list are not
//of the specified type. If you don't know for certain that the list is singly typed, you can use OfType
var multiList = new ArrayList();
list.Add(1);
list.Add(2.3);
list.Add(3);
var onlyInts = list.OfType<int>();
foreach (var num in onlyInts) Console.WriteLine(num);
#endregion
#region Histogram Example
var listOLists = new List<List<string>>() {
new List<string>{"CATS", "DERP", "SUPERDERP"},
new List<string>{"WELP", "DERP", "CATS", "CATS"},
new List<string>{"WELP", "HNNNGGG", "CATS"}
};
var histO = listOLists.SelectMany(x => x).GroupBy(s => s);//.ToDictionary(g => g.Key, v => v.Count());
//.Select(g => new { Key = g.Count(), Word = g.Key });
foreach (var group in histO)
{
Console.WriteLine(group.Key);
foreach (var Word in group)
Console.WriteLine("\t" + Word);
}
//(l, s) => l.Count(x => x == s));
#endregion
Console.ReadLine();
}
public void of_type()
{
var fixtures = new ArrayList();
fixtures.Add(new RavenJObject());
fixtures.AddRange(CreateSequentialFixtures(3));
fixtures.Add(new RavenJObject());
var sut = CreateDynamicList(fixtures);
Assert.Equal(fixtures.OfType<Fixture>().ToList(), sut.OfType<Fixture>().ToList());
Assert.Equal(fixtures.OfType<RavenJObject>().ToList().Count, sut.OfType<RavenJObject>().ToList().Count);
}
/// <summary>
/// Inserts the barcode to list.
/// </summary>
/// <param name="details">The details.</param>
/// <param name="productId">The product id.</param>
/// <param name="quantity">The quantity.</param>
private void InsertBarcodeToList(ArrayList details, string productId, long quantity)
{
if (quantity == 0) return;
DepartmentStockTempValid result = (from sod in details.OfType<DepartmentStockTempValidDTO>()
from stv in sod.DepartmentStockTempValids
where stv.Product.ProductId.Equals(productId)
select stv).FirstOrDefault();
if (result != null) // if exist in list
{
result.GoodQuantity += quantity;
}
else
{
// get information from database
DepartmentStockTempValid tempValid = DepartmentStockTempValidLogic.CreateFromProductId(productId, SelectedDepartment.DepartmentId);
if (tempValid == null)
{
//throw new InvalidDataException("Can not found product in database !");
//MessageBox.Show("Can not found product in database !");
return;
}
tempValid.GoodQuantity = quantity;
DepartmentStockTempValidDTO dto = (from sod in details.OfType<DepartmentStockTempValidDTO>()
where
sod.ProductMaster.ProductMasterId == tempValid.ProductMaster.ProductMasterId
&& sod.ProductColor.ColorId == tempValid.Product.ProductColor.ColorId
&& sod.ProductSize.SizeId == tempValid.Product.ProductSize.SizeId
select sod).FirstOrDefault();
if (dto != null)
{
dto.DepartmentStockTempValids.Add(tempValid);
}
else
{
details.Add(DepartmentStockTempValidDTO.CreateFrom(tempValid));
}
}
}
static void OfTypeAsFilter()
{
// Extract the ints from the ArrayList.
ArrayList myStuff = new ArrayList();
myStuff.AddRange(new object[] { 10, 400, 8, false, new Car(), "string data" });
IEnumerable<int> myInts = myStuff.OfType<int>();
// Prints out 10, 400, and 8.
foreach (int i in myInts)
{
Console.WriteLine("Int value: {0}", i);
}
}
private object LoadBarcode()
{
if (ObjectUtility.LengthEqual(Barcode, 12))
{
IEnumerable enumerable = DepartmentPurchaseOrderLogic.ProcessBarcode(Barcode);
IEnumerator enumerator = enumerable.GetEnumerator();
enumerator.MoveNext();
Product product = (Product)enumerator.Current;
DepartmentPurchaseOrderDetail detail = new DepartmentPurchaseOrderDetail
{
DelFlg = 0,
CreateDate = DateTime.Now,
CreateId = "admin",
UpdateDate = DateTime.Now,
UpdateId = "admin",
ExclusiveKey = 1,
Product = product,
ProductMaster = product.ProductMaster,
DepartmentPurchaseOrder = DepartmentPurchaseOrder,
Quantity = 1
};
if (product.AdhocCase > 0)
detail.AdhocCase = product.AdhocCase;
long maxId = 0;
if (PurchaseOrderDetails.Count > 0)
{
maxId = PurchaseOrderDetails.OfType<DepartmentPurchaseOrderDetail>().Max(
det => det.DepartmentPurchaseOrderDetailPK.PurchaseOrderDetailId);
}
DepartmentPurchaseOrderDetailPK pk = new DepartmentPurchaseOrderDetailPK
{
DepartmentId = 1,
PurchaseOrderDetailId = ++maxId,
PurchaseOrderId = DepartmentPurchaseOrder.DepartmentPurchaseOrderPK.PurchaseOrderId
};
detail.DepartmentPurchaseOrderDetailPK = pk;
var detailList = new ArrayList(PurchaseOrderDetails);
DepartmentPurchaseOrderDetail current =
detailList.OfType<DepartmentPurchaseOrderDetail>().FirstOrDefault(
det => det.Product.ProductId.Equals(detail.Product.ProductId));
if (current != null)
{
current.Quantity += 1;
}
else
{
enumerator.MoveNext();
detail.Price = ((MainPrice)enumerator.Current).Price;
detailList.Add(detail);
}
PurchaseOrderDetails = detailList;
CalculatePrice();
Barcode = "";
}
return null;
}
public static bool SAID(TriggerObject trigObject, ArrayList testWords)
{
return testWords != null && testWords.Count > 0 && testWords.OfType<string>().Any(test => SAID(trigObject, test));
}
public void Execute()
{
var persons = new List<Person>
{
new Person {Id = 1, Name = "gsf_zero1"},
new Person {Id = 2, Name = "gsf_zero2"},
new Customer {Id = 3, Name = "gsf_zero3", Orders = Enumerable.Empty<Order>()},
new Customer
{
Id = 4,
Name = "gsf_zero4",
Orders = new List<Order>
{
new Order {Id = 1, Quantity = 10},
new Order {Id = 2, Quantity = 2}
}
},
new Person {Id = 5, Name = "gsf_zero5"}
};
//
// OfTypeメソッドを利用することにより、特定の型のみのシーケンスに変換することができる。
// 例えば、リストの中に基底クラスであるPersonクラスと派生クラスであるCustomerクラスの
// オブジェクトが混在している場合、OfType<Person>とすると、そのまま。
// OfType<Customer>とすると、Customerオブジェクトのみのシーケンスに変換される。
//
// 尚、OfTypeメソッドは他の変換演算子とは違い、ソースシーケンスのスナップショットを作成しない。
// つまり、通常のクエリと同じく、OfTypeで取得したシーケンスが列挙される度に評価される。
// 変換演算子の中で、このような動作を行うのはAsEnumerableとOfTypeとCastである。
//
Output.WriteLine("========== OfType<Person>の結果 ==========");
foreach (var data in persons.OfType<Person>())
{
Output.WriteLine(data);
}
Output.WriteLine("========== OfType<Customer>の結果 ==========");
foreach (var data in persons.OfType<Customer>())
{
Output.WriteLine(data);
}
/*
IEnumerable<Customer> c = persons.OfType<Customer>();
persons.Add(new Customer { Id = 99, Name = "gsf_zero3", Orders = Enumerable.Empty<Order>() });
foreach (var data in c)
{
Output.WriteLine(data);
}
*/
//
// 元々GenericではないリストをIEnumerable<T>に変換する場合にも利用出来る.
//
var arrayList = new ArrayList();
arrayList.Add(10);
arrayList.Add(20);
arrayList.Add(30);
arrayList.Add(40);
Output.WriteLine("========== Genericではないコレクションを変換 ==========");
var intList = arrayList.OfType<int>();
foreach (var data in intList)
{
Output.WriteLine(data);
}
}
private static TransformResultInfo DoTransform(XElement template)
{
Log.LogThis("Starting invoice transform", eloglevel.info);
Log.LogThis(string.Format("Using invoice template: Id: {0} Name: {1}", template.Attribute("Id").Value, template.Attribute("Name").Value), eloglevel.info);
Log.LogThis(string.Format("Loading original invoice file(s) from: {0}", template.Attribute("SourceFolder").Value), eloglevel.info);
List<string> filelist = Directory.GetFiles(template.Attribute("SourceFolder").Value).OfType<string>().ToList();
Log.LogThis(string.Format("Invocie files found: {0}", string.Join(",", filelist.Select(Path.GetFileName).ToArray())), eloglevel.info);
_templateTransformFields = template.Descendants("TemplateTransform").FirstOrDefault();
_selectedTemplate = template;
_selectedTemplate.Element("InvoiceNumbersToUpdate").RemoveAll();
var eachesConversionElement = _selectedTemplate.Element("EachesConversion");
_useEachesConversion = (eachesConversionElement != null && eachesConversionElement.Attribute("enabled") != null && eachesConversionElement.Attribute("enabled").Value == "1");
_eachesConverionTag = _useEachesConversion && eachesConversionElement.Attribute("tag") != null ? eachesConversionElement.Attribute("tag").Value : "";
var transformResultInfo = new TransformResultInfo();
var newSplitLine = new ArrayList();
var fileInvoices = new Dictionary<string, List<string[]>>();
foreach (string file in filelist)
{
Log.LogThis(string.Format("Processing file: {0}", file), eloglevel.info);
fileInvoices.Add(file, new List<string[]>());
transformResultInfo.NumberOfFilesProcessed += 1;
int newFieldPos = 0;
XElement invoiceNoTemplateField = null;
XElement invoiceDateTemplateField = null;
var sr = new StreamReader(file);
if (_selectedTemplate.Attribute("HasHeaderRecord").Value == "1")
{
sr.ReadLine(); //advance past the header line
}
while (!sr.EndOfStream)
{
var csvParser = new CsvParser(_selectedTemplate.Attribute("Delimiter").Value[0], '\0');
var splitOriginalLine = (string[])csvParser.CSVParser(sr.ReadLine()).ToArray(typeof(string));
if (splitOriginalLine.Count() == 0)
continue;
newSplitLine.Clear();
if (_selectedTemplate.Attribute("HasMasterRecord").Value == "1" && IsMasterRow(splitOriginalLine))
{
invoiceNoTemplateField = _selectedTemplate.Descendants("MasterRow").Descendants("Field").FirstOrDefault(x => x.Attribute("FieldNameId").Value == "1");
_invoiceNumber = splitOriginalLine[int.Parse(invoiceNoTemplateField.Descendants("Delimited").First().Attribute("Position").Value)];
invoiceDateTemplateField = _selectedTemplate.Descendants("MasterRow").Descendants("Field").FirstOrDefault(x => x.Attribute("FieldNameId").Value == "2");
_invoiceDate = splitOriginalLine[int.Parse(invoiceDateTemplateField.Descendants("Delimited").First().Attribute("Position").Value)];
}
else if (IsDetailRow(splitOriginalLine))
{
if (_selectedTemplate.Attribute("HasMasterRecord").Value == "1")
{
newSplitLine.Add(_invoiceNumber);
SetNewFieldPosition(invoiceNoTemplateField, ref newFieldPos);
newSplitLine.Add(_invoiceDate);
SetNewFieldPosition(invoiceDateTemplateField, ref newFieldPos);
}
foreach (XElement templateField in _selectedTemplate.Element("DetailFields").Descendants("Field"))
{
string fieldValue = splitOriginalLine[int.Parse(templateField.Descendants("Delimited").First().Attribute("Position").Value)];
if (templateField.Attribute("DirectiveId") != null &&
!string.IsNullOrEmpty(templateField.Attribute("DirectiveId").Value))
{
Log.LogThis("Alternative processing directive found for fieldNameId " + templateField.Attribute("FieldNameId").Value + ", directiveId " + templateField.Attribute("DirectiveId").Value, eloglevel.info);
var fieldDirective = _selectedTemplate.Element("Directives").Descendants("Directive").FirstOrDefault(directive => directive.Attribute("Id").Value == templateField.Attribute("DirectiveId").Value);
var sourceFieldConditionValue = splitOriginalLine[int.Parse(fieldDirective.Element("Condition").Attribute("ConditionFieldPosition").Value)];
Log.LogThis("DirectiveId " + fieldDirective.Attribute("Id").Value + ": Name: " + fieldDirective.Attribute("Name").Value, eloglevel.info);
decimal result = decimal.Parse(fieldValue);
if (sourceFieldConditionValue == fieldDirective.Element("Condition").Attribute("ConditionValue").Value)
{
var operand1 = decimal.Parse(splitOriginalLine[int.Parse(fieldDirective.Element("Calculation").Element("Operand1").Attribute("sourceFieldPosition").Value)]);
var operand2 = decimal.Parse(splitOriginalLine[int.Parse(fieldDirective.Element("Calculation").Element("Operand2").Attribute("sourceFieldPosition").Value)]);
var op = fieldDirective.Element("Calculation").Element("Operator").Attribute("OpType").Value;
switch (op)
{
case "division":
result = operand1 / (operand2 == 0 ? 1 : operand2);
Log.LogThis("Performing directive: " + operand1 + " / " + (operand2 == 0 ? 1 : operand2) + " = " + result, eloglevel.info);
break;
case "multiply":
result = operand1 * operand2;
break;
case "add":
result = operand1 + operand2;
break;
case "minus":
result = operand1 - operand2;
break;
default:
break;
}
fieldValue = result.ToString("F4");
}
}
newSplitLine.Add(fieldValue);
SetNewFieldPosition(templateField, ref newFieldPos);
}
//if (!IgnoreNegativeAmountLines(new[] { "UnitCost", "TotalCost" }, newSplitLine))
fileInvoices[file].Add(newSplitLine.OfType<string>().ToArray()); //build a list of all the detail lines
}
else if (IsSummaryRow(splitOriginalLine))
{
//ignore summary lines
}
}
sr.Close();
transformResultInfo.NumberOfInvoiceLinesProcessed += fileInvoices[file].Count;
ArchiveProcessedInvoiceFile(file);
}
var allDetailLines = fileInvoices.Values.SelectMany(l => l).ToList();
if (allDetailLines.Count > 0)
{
foreach (var inv in allDetailLines.Select(invLine => invLine[0]).Distinct().ToList())
_selectedTemplate.Element("InvoiceNumbersToUpdate").Add(new XElement("InvoiceNumber", inv));
CreateFixedLengthFieldsAndTransformDetials(fileInvoices);
SaveTransformedInvoiceFile(fileInvoices);
}
return transformResultInfo;
}
public void CodeGenerationStartedTest()
{
// Arrange
WebPageRazorHost host = new WebPageRazorHost("~/Foo/Baz.cshtml", @"C:\Foo\Baz.cshtml");
RazorBuildProvider provider = CreateBuildProvider("foo @bar baz");
provider.Host = host;
// Expected original base dependencies
var baseDependencies = new ArrayList();
baseDependencies.Add("/Samples/Foo/Baz.cshtml");
// Expected list of dependencies after GenerateCode is called
var dependencies = new ArrayList();
dependencies.Add(baseDependencies[0]);
dependencies.Add("/Samples/Foo/Foo.cshtml");
// Set up the event handler
provider.CodeGenerationStartedInternal += (sender, e) =>
{
var bp = sender as RazorBuildProvider;
bp.AddVirtualPathDependency("/Samples/Foo/Foo.cshtml");
};
// Set up the base dependency
MockAssemblyBuilder builder = new MockAssemblyBuilder();
typeof(BuildProvider).GetField("_virtualPath", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(provider, CreateVirtualPath("/Samples/Foo/Baz.cshtml"));
// Test that VirtualPathDependencies returns the original dependency before GenerateCode is called
Assert.True(baseDependencies.OfType<string>().SequenceEqual(provider.VirtualPathDependencies.OfType<string>()));
// Act
provider.GenerateCodeCore(builder);
// Assert
Assert.NotNull(provider.AssemblyBuilderInternal);
Assert.Equal(builder, provider.AssemblyBuilderInternal);
Assert.True(dependencies.OfType<string>().SequenceEqual(provider.VirtualPathDependencies.OfType<string>()));
Assert.Equal("/Samples/Foo/Baz.cshtml", provider.VirtualPath);
}
private static void SimpleQueries2() {
var cars = new List<Car> {
new Car {CarName = "Opel", MaxSpeed = 240},
new Car {CarName = "BMW", MaxSpeed = 260},
new Car {CarName = "BMW", MaxSpeed = 220},
new Car {CarName = "Audi", MaxSpeed = 250}
};
Console.WriteLine("*** Whole cars:***");
cars.PrintCollection();
Console.WriteLine("*** Fast cars:***");
GetFastCars(cars).PrintCollection();
Console.WriteLine("*** Fast BMWs:***");
GetFastBMWs(cars).PrintCollection();
// BUT!!!
// Non-generic collections (such as ArrayList) are not compatible with IEnumerable interface
// that is needed for LINQ queries!
// so we need to transform them!!!
// that also because such containers can contain any type of data!!!
var carList = new ArrayList {
new Car {CarName = "Opel", MaxSpeed = 240},
new Car {CarName = "BMW", MaxSpeed = 260},
new Car {CarName = "BMW", MaxSpeed = 220},
new Car {CarName = "Audi", MaxSpeed = 250},
// non-Car objects wont appear in casted list
new object(),
new Point {X = 2, Y = 3},
false,
42
};
Console.WriteLine("*** ArrayList collection:***");
// casting (filtering) to IEnumerable<Car>
GetFastCars(carList.OfType<Car>()).PrintCollection();
}
private IList SortDetail(ArrayList stockInDetails)
{
var result = from detail in stockInDetails.OfType<StockInDetail>()
orderby detail.Product.ProductMaster.ProductName,
detail.Product.ProductMaster.ProductColor.ColorId,
detail.Product.ProductMaster.ProductSize.SizeId ascending
select detail;
return result.ToList();
}
public static void PrintOftype()
{
var arr = new object[5];
arr[0] = new StringBuilder();
arr[1] = "string";
arr[2] = "integer";
arr[3] = new int[1];
arr[4] = new double[3];
var arrayList = new ArrayList {new StringBuilder(), "string1", "string2", new int[1], 1, 2, 3.1};
var ofTypeArr = arrayList.OfType<double>();
foreach (var i in ofTypeArr)
{
Console.WriteLine("{0:0.0}",i);
}
}