DataColumnMappingCollection.RemoveAt Method

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System.Data.Common Namespace DataColumnMappingCollection Class

Removes a specified DataColumnMapping from the collection.

1. Removes the DataColumnMapping at the specified index.

[ VB ] Overloads NotOverridable Public Sub RemoveAt ( Integer ) Implements IList.RemoveAt

[ C# ] public void RemoveAt ( int );

[ C++ ] public: __sealed void RemoveAt ( int );

[ JScript ] public function RemoveAt ( int );

2. Removes the DataColumnMapping with the specified SourceColumn name.

[ VB ] Overloads NotOverridable Public Sub RemoveAt ( String ) Implements IColumnMappingCollection.RemoveAt

[ C# ] public void RemoveAt ( string );

[ C++ ] public: __sealed void RemoveAt ( String* );

[ JScript ] public function RemoveAt ( String );

The following example first uses the Contains method to find a DataColumnMapping with the specified source column name within the ColumnMappings collection of a specifed DataTableMapping object. If the mapping exists, the example removes it.

NOTE: This example uses one of the overloaded versions of RemoveAt. For other examples that may be available, see the individual overload topics.

public void SearchColumnMappings ( DataTableMapping myTableMap ) {
   DataColumnMappingCollection myFieldsMaps = myTableMap.ColumnMappings;
   if ( myFieldsMaps.Contains ( "Picture" )
      myFieldsMaps.RemoveAt ( "Picture" );

}

Public Sub SearchColumnMappings ( ByVal myTableMap As DataTableMapping )
   Dim myFieldsMaps As DataColumnMappingCollection = myTableMap.ColumnMappings
   If myFieldsMaps.Contains ( "Picture" ) Then
      myFieldsMaps.RemoveAt ( "Picture" );
   End If
End Sub

C#

VB

DataColumnMappingCollection Members

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Tuesday, April 22, 2025

DataColumnMappingCollection.RemoveAt Method

Overload List

Example

See Also