DataAdapter.TableMappings Property

Definition

Namespace:

System.Data.Common

Assembly:

System.Data.Common.dll

Source:

DataAdapter.cs

Gets a collection that provides the primary mapping between a source table and a DataTable.

public:
 property System::Data::Common::DataTableMappingCollection ^ TableMappings { System::Data::Common::DataTableMappingCollection ^ get(); };

public System.Data.Common.DataTableMappingCollection TableMappings { get; }

member this.TableMappings : System.Data.Common.DataTableMappingCollection

Public ReadOnly Property TableMappings As DataTableMappingCollection

Property Value

DataTableMappingCollection

A collection that provides the primary mapping between the returned records and the DataSet. The default value is an empty collection.

Examples

The following example uses a derived class, OleDbDataAdapter, to add DataTableMapping objects to its TableMappings collection and display a list of those mapped source tables. This example assumes that an OleDbDataAdapter has already been created.

public void ShowTableMappings() {
   // ...
   // create myDataAdapter
   // ...
   myDataAdapter.TableMappings.Add("Categories","DataCategories");
   myDataAdapter.TableMappings.Add("Orders","DataOrders");
   myDataAdapter.TableMappings.Add("Products","DataProducts");
   string myMessage = "Table Mappings:\n";
   for(int i=0;i < myDataAdapter.TableMappings.Count;i++) {
      myMessage += i.ToString() + " "
         + myDataAdapter.TableMappings[i].ToString() + "\n";
   }
   MessageBox.Show(myMessage);
}

Public Sub ShowTableMappings()
    ' ...
    ' create myDataAdapter
    ' ...
    myDataAdapter.TableMappings.Add("Categories", "DataCategories")
    myDataAdapter.TableMappings.Add("Orders", "DataOrders")
    myDataAdapter.TableMappings.Add("Products", "DataProducts")
    Dim myMessage As String = "Table Mappings:" + ControlChars.Cr
    Dim i As Integer
    For i = 0 To myDataAdapter.TableMappings.Count - 1
        myMessage += i.ToString() + " " _
           + myDataAdapter.TableMappings(i).ToString() + ControlChars.Cr
    Next i
    MessageBox.Show(myMessage)
End Sub

Remarks

When reconciling changes, the DataAdapter uses the DataTableMappingCollection collection to associate the column names used by the data source with the column names used by the DataSet.

See also

• ADO.NET Overview