Gets a value indicating whether a DataTable object with the specified name exists in the collection.

[Visual Basic]
Public Function Contains( _
   ByVal name As String _
) As Boolean
[C#]
public bool Contains(
   string name
);
[C++]
public: bool Contains(
   String* name
);
[JScript]
public function Contains(
   name : String
) : Boolean;

Parameters

name

The name of the DataTable to find.

Return Value

true if the specified table exists; otherwise, false.

Remarks

You specify the name of the DataTable object by means of the TableName property. If you add a DataTable to the collection with the Add method, passing no arguments, the table is given a default name, based on the order in which the table was added (Table1, Table2, and so on).

To get the index of a DataTable, use the IndexOf method.

Example

[Visual Basic, C#] The following example tests whether a table with the name "Suppliers" exists in the DataTableCollection.

[Visual Basic] 
Private Sub TestForTableName()
   Dim dSet As DataSet
   ' Get the DataSet of a DataGrid.
   dSet = CType(DataGrid1.DataSource, DataSet)
   ' Get the DataTableCollection through the Tables property.
   Dim tablesCol As DataTableCollection
   tablesCol = dSet.Tables
   ' Check if the named table exists.
   If tablesCol.Contains("Suppliiers") Then 
      MessageBox.Show("Table named Suppliers exists")
   End If
End Sub

[C#] 
private void TestForTableName()
{
   DataSet dSet;
   // Get the DataSet of a DataGrid.
   dSet = (DataSet)DataGrid1.DataSource;
   // Get the DataTableCollection through the Tables property.
   DataTableCollection tablesCol = dSet.Tables;
   // Check if the named table exists.
   if (tablesCol.Contains("Suppliiers")) 
      MessageBox.Show("Table named Suppliers exists");
}

[C++, JScript] No example is available for C++ or JScript. To view a Visual Basic or C# example, click the Language Filter button in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework - Windows CE .NET

See Also

DataTableCollection Class | DataTableCollection Members | System.Data Namespace | Item | IndexOf | Remove | CanRemove