System.Data Namespace   DataColumnCollection Class

Returns the index of a specified DataColumn object.

[ VB ]
Overloads Overridable Public Function IndexOf ( _
   ByVal column As DataColumn _
) As Integer

[ C# ]
public virtual int IndexOf (
   DataColumn column
);

[ C++ ]
public: virtual int IndexOf (
   DataColumn* column
);

[ JScript ]
public function IndexOf (
   column : DataColumn
) : int;

column

The DataColumn to find.

The index of the DataColumn if it is in the collection; otherwise, -1.

Use the IndexOf method to determine the index of a given column.

Before calling IndexOf, you can test for the existence of a column by using the Contains method.

The following example returns the index of each column in a DataColumnCollection.

private void GetIndexes ( DataTable myTable ) {
   DataColumnCollection myCols = myTable.Columns;

   // get the index of each column in the collection.
   foreach ( DataColumn col in myCols ) {
      Response.Write ( myCols.IndexOf ( col ) );
   }
}

Private Sub GetIndexes ( ByVal myTable As DataTable )
   Dim myCols As DataColumnCollection = myTable.Columns
   Dim col As DataColumn
   ' get the index of each column in the collection.
   For Each col In myCols
      Response.Write ( myCols.IndexOf ( col ) )
   Next
End Sub

DataColumnCollection Members   DataColumnCollection.IndexOf Overload List   Contains