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DataColumn Constructor (String, Type)

Inititalizes a new instance of the DataColumn class using the specified column name and data type.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

'Declaration
Public Sub New ( _
	columnName As String, _
	dataType As Type _
)

Parameters

columnName
Type: System.String
A string that represents the name of the column to be created. If set to Nothing or an empty string (""), a default name will be specified when added to the columns collection.
dataType
Type: System.Type
A supported DataType.

ExceptionCondition
ArgumentNullException

No dataType was specified.

The following example creates a new DataColumn with a specified ColumnName and DataType.



Private Sub AddDataColumn(ByVal table As DataTable)

   Dim typeInt32 As System.Type = _
      System.Type.GetType("System.Int32")
   Dim column As DataColumn = _
       New DataColumn("id", typeInt32)

   ' Set various properties.
   With column
      .AutoIncrement = True
      .AutoIncrementSeed = 1
      .AutoIncrementStep = 1
      .ReadOnly = True
    End With

   ' Add to Columns collection.
   table.Columns.Add(column)
End Sub


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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