public static DataTable ExampleCustomersDataTable1(List <string> pContactTitleList)
{
_methodName = nameof(ExampleCustomersDataTable1);
SqlWhereInParameterBuilder.OnShowCommandStatementEvent += SqlWhereInParameterBuilder_OnShowCommandStatementEvent;
var customersDataTable = new DataTable();
// field which the WHERE IN will use
const string parameterPrefix = "CT.ContactTitle";
// Base SELECT Statement
var selectStatement =
"SELECT C.CustomerIdentifier , C.CompanyName , C.ContactName , C.ContactTypeIdentifier , " +
"FORMAT(C.ModifiedDate, 'MM-dd-yyyy', 'en-US') AS ModifiedDate, CT.ContactTitle " +
"FROM dbo.Customers AS C INNER JOIN dbo.ContactType AS CT ON C.ContactTypeIdentifier = CT.ContactTypeIdentifier " +
$"WHERE {parameterPrefix} IN ({{0}}) ORDER BY C.CompanyName";
// Builds the SELECT statement minus values
var commandText = SqlWhereInParameterBuilder.BuildWhereInClause(selectStatement, parameterPrefix, pContactTitleList);
using (var cn = new SqlConnection {
ConnectionString = _connectionString
})
{
using (var cmd = new SqlCommand {
Connection = cn
})
{
cmd.CommandText = commandText;
//
// Add values for command parameters
//
cmd.AddParamsToCommand(parameterPrefix, pContactTitleList);
try
{
cn.Open();
customersDataTable.Load(cmd.ExecuteReader());
if (DisplayFormattedSql)
{
Console.WriteLine(Scripter.Format(cmd.CommandText));
}
}
catch (Exception ex)
{
OnExceptionEvent?.Invoke(ex);
}
{
SqlWhereInParameterBuilder.OnShowCommandStatementEvent -= SqlWhereInParameterBuilder_OnShowCommandStatementEvent;
}
}
}
return(customersDataTable);
}
public static List <Orders> ExampleOrderDates(List <string> pDatesList)
{
_methodName = nameof(ExampleOrderDates);
SqlWhereInParameterBuilder.OnShowCommandStatementEvent += SqlWhereInParameterBuilder_OnShowCommandStatementEvent;
var orders = new List <Orders>();
const string parameterPrefix = "O.OrderDate";
var selectStatement =
"SELECT O.OrderID, O.CustomerIdentifier, O.OrderDate, O.RequiredDate, O.ShipCity, O.ShipPostalCode " +
"FROM Orders AS O " +
$"WHERE {parameterPrefix} IN ({{0}})";
var commandText = SqlWhereInParameterBuilder.BuildWhereInClause(selectStatement, parameterPrefix, pDatesList);
using (var cn = new SqlConnection {
ConnectionString = _connectionString
})
{
using (var cmd = new SqlCommand {
Connection = cn
})
{
cmd.CommandText = commandText;
cmd.AddParamsToCommand(parameterPrefix, pDatesList);
try
{
cn.Open();
var reader = cmd.ExecuteReader();
while (reader.Read())
{
orders.Add(new Orders()
{
OrderID = reader.GetInt32(0), OrderDate = reader.GetNullableDateTime("OrderDate")
});
}
if (DisplayFormattedSql)
{
OnShowFormattedStatementEvent?.Invoke(Scripter.Format(cmd.CommandText));
}
}
catch (Exception ex)
{
OnExceptionEvent?.Invoke(ex);
}
finally
{
SqlWhereInParameterBuilder.OnShowCommandStatementEvent -= SqlWhereInParameterBuilder_OnShowCommandStatementEvent;
}
}
}
return(orders);
}
public static void KarenDemo()
{
Scripter.GetBatchesExample();
}
public static List <Customer> ExampleCustomersList1(List <string> pContactTitleList)
{
_methodName = nameof(ExampleCustomersList1);
SqlWhereInParameterBuilder.OnShowCommandStatementEvent += SqlWhereInParameterBuilder_OnShowCommandStatementEvent;
var customers = new List <Customer>();
// field which the WHERE IN will use
const string parameterPrefix = "CT.ContactTitle";
// Base SELECT Statement
var selectStatement =
"SELECT C.CustomerIdentifier , C.CompanyName , C.ContactName , C.ContactTypeIdentifier , " +
"FORMAT(C.ModifiedDate, 'MM-dd-yyyy', 'en-US') AS ModifiedDate, CT.ContactTitle " +
"FROM dbo.Customers AS C INNER JOIN dbo.ContactType AS CT ON C.ContactTypeIdentifier = CT.ContactTypeIdentifier " +
$"WHERE {parameterPrefix} IN ({{0}}) ORDER BY C.CompanyName";
var commandText = SqlWhereInParameterBuilder.BuildWhereInClause(selectStatement, parameterPrefix, pContactTitleList);
using (var cn = new SqlConnection {
ConnectionString = _connectionString
})
{
using (var cmd = new SqlCommand {
Connection = cn
})
{
cmd.CommandText = commandText;
cmd.AddParamsToCommand(parameterPrefix, pContactTitleList);
try
{
cn.Open();
var reader = cmd.ExecuteReader();
while (reader.Read())
{
customers.Add(new Customer()
{
CustomerIdentifier = reader.GetInt32(0),
CompanyName = reader.GetString(1),
ContactName = reader.GetString(2),
ContactTypeIdentifier = reader.GetInt32(3),
ModifiedDate = reader.GetString(4),
ContactTitle = reader.GetString(5)
});
}
if (DisplayFormattedSql)
{
Console.WriteLine(Scripter.Format(cmd.CommandText));
}
}
catch (Exception ex)
{
OnExceptionEvent?.Invoke(ex);
}
{
SqlWhereInParameterBuilder.OnShowCommandStatementEvent -= SqlWhereInParameterBuilder_OnShowCommandStatementEvent;
}
}
}
return(customers);
}