public static void Main()
{
MyBaseClass myBase = new MyBaseClass();
MyDerivedClass myDerived = new MyDerivedClass();
object o = myDerived;
//MyBaseClass b = myDerived;
var b = myDerived;
Console.WriteLine("myBase: Type is {0}", myBase.GetType());
Console.WriteLine("myDerived: Type is {0}", myDerived.GetType());
Console.WriteLine("object o = myDerived: Type is {0}", o.GetType());
Console.WriteLine("MyBaseClass b = myDerived: Type is {0}", b.GetType());
Console.WriteLine("-----------------------------------------");
int n1 = 12;
int n2 = 82;
long n3 = 12;
Console.WriteLine("n1 and n2 are the same type: {0}", Object.ReferenceEquals(n1.GetType(), n2.GetType()));
Console.WriteLine("n1 and n3 are the same type: {0}", Object.ReferenceEquals(n1.GetType(), n3.GetType()));
Console.WriteLine("-----------------------------------------");
object[] values = { (int)12, (long)10653, (byte)12, (sbyte)-5, 16.3, "string" };
foreach (var value in values)
{
Type t = value.GetType();
if (t.Equals(typeof(byte)))
{
Console.WriteLine("The value: {0} is an unsigned byte.", value);
}
else if (t.Equals(typeof(sbyte)))
{
Console.WriteLine("The value: {0} is a signed byte.", value);
}
else if (t.Equals(typeof(int)))
{
Console.WriteLine("The value: {0} is a 32-bit integer.", value);
}
else if (t.Equals(typeof(long)))
{
Console.WriteLine("The value: {0} is a 32-bit integer.", value);
}
else if (t.Equals(typeof(double)))
{
Console.WriteLine("The value: {0} is a double-precision floating point.", value);
}
else
{
Console.WriteLine("The value: '{0}' is another data type.", value);
}
}
}
public static void Main()
{
MyBaseClass myBase = new MyBaseClass();
MyDerivedClass myDerived = new MyDerivedClass();
object o = myDerived;
MyBaseClass b = myDerived;
Console.WriteLine("mybase: Type is {0}", myBase.GetType());
Console.WriteLine("myDerived: Type is {0}", myDerived.GetType());
Console.WriteLine("object o = myDerived: Type is {0}", o.GetType());
Console.WriteLine("MyBaseClass b = myDerived: Type is {0}", b.GetType());
}
public static void Retrieve(this MyBaseClass entity, int ID)
{
string className = entity.GetType().Name;
Database db = DatabaseFactory.CreateDatabase();
DbCommand dbCommand = db.GetStoredProcCommand(String.Format("{0}s_Retrieve_{0}", className));
db.AddInParameter(dbCommand, String.Format("@{0}ID", className), DbType.Int32, ID);
using (IDataReader dr = db.ExecuteReader(dbCommand))
{
if (dr.Read())
{
BOLoader.LoadDataToProps(this, dr);
}
}
}
public override int CompareTo(MyBaseClass other)
{
if (other == null)
{
return(1);
}
var typedOther = other as MyBaseClass;
if (typedOther != null)
{
return(this.SomeValue.CompareTo(typedOther.SomeValue));
}
else
{
return(GetType().FullName.CompareTo(other.GetType().FullName));
}
}
public override int CompareTo(MyBaseClass other)
{
if (other == null)
{
// every instance comes after null, cf. docs
return(1);
}
var typedOther = other as MyBaseClass;
if (typedOther != null)
{
// other instance of same type; compare by custom sorting criteria
return(this.SomeValue.CompareTo(typedOther.SomeValue));
}
else
{
// other instance of different type; make sure different types are always sorted in the same order
return(GetType().FullName.CompareTo(other.GetType().FullName));
}
}
static void Main(string[] args)
{
MyBaseClass myBase = new MyBaseClass();
MyDerivedClass myDerived = new MyDerivedClass();
object o = myDerived;
MyBaseClass b = myDerived;
Console.WriteLine("mybase: Type is {0}", myBase.GetType());
Console.WriteLine("myDerived: Type is {0}", myDerived.GetType());
Console.WriteLine("object o = myDerived: Type is {0}", o.GetType());
// Class Type不會因此被覆蓋
Console.WriteLine("MyBaseClass b = myDerived: Type is {0}", b.GetType());
int n1 = 12;
int n2 = 82;
long n3 = 12;
Console.WriteLine("n1 and n2 are the same type: {0}",
Object.ReferenceEquals(n1.GetType(), n2.GetType()));
Console.WriteLine("n1 and n3 are the same type: {0}",
Object.ReferenceEquals(n1.GetType(), n3.GetType()));
Console.ReadLine();
}