System.Data.Common Namespace DataTableMappingCollection Class
Checks whether a DataTableMapping object exists in the collection.
1. Checks whether a given DataTableMapping object exists in the collection.
2. Checks whether a DataTableMapping with the given source table name exists in the collection.
The following example searches for a DataTableMapping object with the given source table name within a DataTableMappingCollection. If the DataTableMapping exists, the code displays the name and index of the mapping; otherwise, it displays an error.
NOTE: This example uses one of the overloaded versions of Contains. For other examples that may be available, see the individual overload topics.
public void FindDataTableMapping ( DataAdapter myAdapter ) {
// get table mappings
DataTableMappingCollection myTables = myAdapter.TableMappings;
if ( myTables.Contains ( "Employees" ) ) {
MessageBox.Show ( "Name: " + myTables [ "Employees" ].ToString ( )
+ "\nIndex: " + myTables.IndexOf ( "Employees" ).ToString ( ) );
} else {
MessageBox.Show ( "Error: no such table in collection" );
}
}
Public Sub FindDataTableMapping ( ByVal myAdapter As DataAdapter )
' get table mappings
Dim myTables As DataTableMappingCollection = myAdapter.TableMappings;
If myTables.Contains ( "Employees" ) Then
MessageBox.Show ( "Name: " + myTables ( "Employees" ).ToString ( ) _
+ ControlChars.Cr + "Index: " + myTables.IndexOf ( "Employees" ).ToString ( ) )
Else
MessageBox.Show ( "Error: no such table in collection" )
End If
End Sub |
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C# |
VB |
DataTableMappingCollection Members
