System.Data.Common Namespace   DataTableMappingCollection Class

Checks whether a given DataTableMapping object exists in the collection.

[ VB ]
NotOverridable Overloads Public Function Contains ( _
   ByVal tableMapping As Object _
) As Boolean Implements IList.Contains

[ C# ]
public bool Contains (
   object tableMapping
);

[ C++ ]
public: __sealed bool Contains (
   Object* tableMapping
);

[ JScript ]
public function Contains (
   tableMapping : Object
) : Boolean

tableMapping

A DataTableMapping object to find.

This method returns only a boolean value: true if the collection contains a specified DataTableMapping object; otherwise, false.

IList.Contains

Use the Contains method to confirm the existence of a table mapping object before performing further operations on the object.

The following example first uses the Contains method to determine if a particular table mapping exists in the collection. If found, the table mapping is removed with the Remove method.

private void RemoveTableMapping ( DataAdapter myAdapter, object myTable ) {
   // get the table mappings collection
   DataTableMappingCollection myTables = myAdapter.TableMappings;
   if ( myTables.Contains ( myTable ) {
      myTables.Remove ( myTable );
   }
}

Private Sub RemoveTableMapping ( myAdapter As DataAdapter, myTable As Object )
   ' get the table mappings collection
   Dim myTables As DataTableMappingCollection = myAdapter.TableMappings
   If myTables.Contains ( myTable ) Then
      myTables.Remove ( myTable )
   End If
End Sub

DataTableMappingCollection Members   DataTableMappingCollection.Contains Overload List