System.Data.OleDb Namespace OleDbParameterCollection Class
Checks whether a parameter is in the collection.
1. Checks whether a given OleDbParameter object is in the collection.
2. Checks whether an OleDbParameter with the specified name is in the collection.
The following example shows use of the Contains property to find an OleDbParameter with a given ParameterName within the Parameters collection of a specifed OleDbCommand object. If the parameter exists, the example displays the index of the parameter; otherwise, the example displays an error.
NOTE: This example uses one of the overloaded versions of the Contains method. For other examples that may be available, see the individual overload topics.
public void SearchOleDbParams ( OleDbCommand myCmd ) {
OleDbParameterCollection myParams = myCmd.Parameters;
if ( myParams.Contains ( "Model" ) )
MessageBox.Show ( "Name: " + myParams [ "Model" ].ToString ( ) +
"Index: " + myParams.IndexOf ( "Model" ).ToString ( ) );
else
MessageBox.Show ( "Sorry, no such parameter found in the collection" );
}
Public Sub SearchOleDbParams ( ByVal myCmd As OleDbCommand )
Dim myParams As OleDbParameterCollection = myCmd.Parameters
If myParams.Contains ( "Model" ) Then
MessageBox.Show ( "Name: " & myParams ( "Model" ).ToString ( ) & _
"Index: " & myParams.IndexOf ( "Model" ).ToString ( ) )
Else
MessageBox.Show ( "Sorry, no such parameter found in the collection" )
End If
End Sub |
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C# |
VB |
OleDbParameterCollection Members
