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DataColumn.ToString Method

Gets the Expression of the column, if one exists.

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

'Declaration
Public Overrides Function ToString As String

Return Value

Type: System.String
The Expression value, if the property is set; otherwise, the ColumnName property.

The following example uses the ToString property to return the default string of each member of a collection of DataColumn objects.


Private Sub PrintColumns(table As DataTable)
    ' Print the default string of each column in a collection.
    Dim column As DataColumn
    For Each column In table.Columns
       Console.WriteLine(column.ToString())
    Next
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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