DataAdapter.TableMappings Property
Definition
Important
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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; }
[System.Data.DataSysDescription("DataAdapter_TableMappings")]
public System.Data.Common.DataTableMappingCollection TableMappings { get; }
member this.TableMappings : System.Data.Common.DataTableMappingCollection
[<System.Data.DataSysDescription("DataAdapter_TableMappings")>]
member this.TableMappings : System.Data.Common.DataTableMappingCollection
Public ReadOnly Property TableMappings As DataTableMappingCollection
Property Value
A collection that provides the primary mapping between the returned records and the DataSet. The default value is an empty collection.
- Attributes
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.
Applies to
See also
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