System.Data.Common Namespace   DataColumnMapping Class

Returns a DataColumn from the given DataTable using the MissingSchemaAction and the type of the DataColumn.

[ VB ]
Public Function GetDataColumnBySchemaAction ( _
   ByVal dataTable As DataTable, _
   ByVal dataType As Type, _
   ByVal schemaAction As MissingSchemaAction _
) As DataColumn

[ C# ]
public DataColumn GetDataColumnBySchemaAction (
   DataTable dataTable,
   Type dataType,
   MissingSchemaAction schemaAction
);

[ C++ ]
public: DataColumn* GetDataColumnBySchemaAction (
   DataTable* dataTable,
   Type* dataType,
   MissingSchemaAction schemaAction
);

[ JScript ]
public function GetDataColumnBySchemaAction (
   dataTable : DataTable,
   dataType : Type,
   schemaAction : MissingSchemaAction
) : DataColumn;

dataTable

The DataTable to get the column from.

dataType

The Type of the data column.

schemaAction

One of the MissingSchemaAction values.

A DataColumn.

If no column of the given dataType exists in the specified dataTable, a null reference is returned, and the following happens for the given MissingSchemaAction:

The following example gets the DataColumn that is of type Single for a given DataTable. If no column of type Single exists in the DataTable, a null reference is returned.

void CreateDataColumn ( DataTable myTable, DataColumnMapping myMap ) {
   DataColumn currentCol = myMap.GetDataColumnBySchemaAction (
      myTable, typeof ( Single ), MissingSchemaAction.Ignore );
}

Sub CreateDataColumn ( myTable As DataTable, myMap As DataColumnMapping )
   Dim currentCol As DataColumn = myMap.GetDataColumnBySchemaAction ( _
      myTable, GetType ( Single ), MissingSchemaAction.Ignore )
End Sub

DataColumnMapping Members