DataColumn Constructor ( )

Initializes a new instance of a DataColumn class.

[ VB ]
Public Sub New ( )

[ C# ]
public DataColumn ( );

[ C++ ]
public: DataColumn ( );

[ JScript ]
public function DataColumn ( );

When created, a new DataColumn object has no default ColumnName or Caption. When added to a DataColumnCollection, however, a default name ( "Column1", "Column2", and so on ) is given to the column.

The following example initializes a new DataColumn using this constructor, sets various properties, and adds it to a DataTable object's DataColumnCollection.

private void AddDataColumn ( DataTable myTable ) {
   DataColumn myColumn = new DataColumn ( );
   // set various properties.

   myColumn.ColumnName = "id";
   myColumn.DataType = System.Type.GetType ( "System.Int32" );
   myColumn.AutoIncrement = true;
   myColumn.AutoIncrementSeed = 1;
   myColumn.AutoIncrementStep = 1;
   myColumn.ReadOnly = true;

   // add to Columns collection.
   myTable.Columns.Add ( myColumn );
}

Private Sub AddDataColumn ( ByVal myTable As DataTable )
   Dim myColumn As New DataColumn ( )
   ' set various properties.
   With myColumn
      .ColumnName = "id"
      .DataType = System.Type.GetType ( "System.Int32" )
      .AutoIncrement = True
      .AutoIncrementSeed = 1
      .AutoIncrementStep = 1
      .ReadOnly = True
   End With
   ' add to Columns collection.
   myTable.Columns.Add ( myColumn )
 End Sub

DataColumn Members DataColumn Constructor Overload List ColumnName Caption DefaultValue DataTable DataType

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DataColumn Constructor ( )

Remarks

Example

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