Contains Method

DataColumnCollection.Contains Method

Checks whether the collection contains a column with the specified name.

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

public bool Contains (
	string name
public boolean Contains (
	String name
public function Contains (
	name : String
) : boolean



The ColumnName of the column to look for.

Return Value

true if a column exists with this name; otherwise, false.

Use the Contains method to confirm the existence of a column before you perform additional operations on the column.

The following example uses the Contains method and the CanRemove method to determine whether the column can be removed. If so, the column is removed.

private void RemoveColumn(string columnName, DataTable table)
    DataColumnCollection columns = table.Columns;
    if (columns.Contains(columnName))
        if (columns.CanRemove(columns[columnName]))

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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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