NGWS SDK Documentation  

This is preliminary documentation and subject to change.
To comment on this topic, please send us email at ngwssdk@microsoft.com. Thanks!

ColumnsCollection.Add

Adds a DataColumn to the columns collection.

Overload List

Creates and adds a DataColumn with the specified name and type to the columns collection.

[Visual Basic] Overloads Public Function Add(String, Type) As DataColumn
[C#] public DataColumn Add(String, Type);
[C++] public: DataColumn* Add(String*, Type);
[JScript] public function Add(String, Type) : DataColumn;

Creates and adds a DataColumn with the specified name, type, and compute expression to the columns collection.

[Visual Basic] Overloads Public Function Add(String, Type, String) As DataColumn
[C#] public DataColumn Add(String, Type, String);
[C++] public: DataColumn* Add(String*, Type, String*);
[JScript] public function Add(String, Type, String) : DataColumn;

Adds the specified DataColumn to the columns collection.

[Visual Basic] Overloads Public Sub Add(DataColumn)
[C#] public void Add(DataColumn);
[C++] public: void Add(DataColumn*);
[JScript] public function Add(DataColumn);

Creates and adds a DataColumn with the specified name and storage to the collection.

[Visual Basic] Overloads Public Function Add(String, DataStorage) As DataColumn
[C#] public DataColumn Add(String, DataStorage);
[C++] public: DataColumn* Add(String*, DataStorage);
[JScript] public function Add(String, DataStorage) : DataColumn;

Creates and adds a DataColumn to a columns collection.

[Visual Basic] Overloads Public Function Add() As DataColumn
[C#] public DataColumn Add();
[C++] public: DataColumn* Add();
[JScript] public function Add() : DataColumn;

Creates and adds a DataColumn with the specified name to the columns collection.

[Visual Basic] Overloads Public Function Add(String) As DataColumn
[C#] public DataColumn Add(String);
[C++] public: DataColumn* Add(String*);
[JScript] public function Add(String) : DataColumn;

Example [Visual Basic]

The following example creates and adds a new DataColumn to a ColumnsCollection of a DataTable.

Note   This example shows how to use one of the overloaded versions of Add. For other examples that may be available, see the individual overload topics.

[Visual Basic]

Private Sub AddColumn()
   Dim cols As ColumnsCollection
   Dim myCol As DataColumn
   ' Get the ColumnsCollection from a table in a DataSet.
   cols = New DataSet1.Tables("Prices").Columns
   myCol = cols.Add("Total")
   With myCol
      .DataType = System.Type.GetType("System.Currency")
      .ReadOnly = True
      .Expression = "UnitPrice * Quantity"
      .Unique = False
   End With
End Sub

See Also

ColumnsCollection Class | ColumnsCollection Members | System.Data Namespace