DataColumnCollection.Add Method (String, Type)
Assembly: System.Data (in system.data.dll)
The ColumnName to use when you create the column.
The DataType of the new column.
Return ValueThe newly created DataColumn.
If a null reference (Nothing in Visual Basic) or an empty string ("") is passed in for the name, a default name ("Column1", "Column2", and so on) is given to the column.
Use the Contains method to determine whether a column with the proposed name already exists in the collection.
If the collection is successfully changed by adding or removing columns, the CollectionChanged event occurs.
The following example creates and adds a new DataColumn to a DataColumnCollection of a DataTable.
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.