SelectedGridItemChangedEventArgs.OldSelection Property
Definition
Important
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Gets the previously selected GridItem.
public:
property System::Windows::Forms::GridItem ^ OldSelection { System::Windows::Forms::GridItem ^ get(); };public System.Windows.Forms.GridItem OldSelection { get; }public System.Windows.Forms.GridItem? OldSelection { get; }member this.OldSelection : System.Windows.Forms.GridItemPublic ReadOnly Property OldSelection As GridItemProperty Value
The old GridItem. This can be null.
Examples
The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the PropertyGrid.SelectedGridItemChanged event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.
To run the example code, paste it into a project that contains an instance of type PropertyGrid named PropertyGrid1. Then ensure that the event handler is associated with the PropertyGrid.SelectedGridItemChanged event.
private void PropertyGrid1_SelectedGridItemChanged(Object sender, SelectedGridItemChangedEventArgs e) {
System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "NewSelection", e.NewSelection );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "OldSelection", e.OldSelection );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "SelectedGridItemChanged Event" );
}
Private Sub PropertyGrid1_SelectedGridItemChanged(sender as Object, e as SelectedGridItemChangedEventArgs) _
Handles PropertyGrid1.SelectedGridItemChanged
Dim messageBoxVB as New System.Text.StringBuilder()
messageBoxVB.AppendFormat("{0} = {1}", "NewSelection", e.NewSelection)
messageBoxVB.AppendLine()
messageBoxVB.AppendFormat("{0} = {1}", "OldSelection", e.OldSelection)
messageBoxVB.AppendLine()
MessageBox.Show(messageBoxVB.ToString(),"SelectedGridItemChanged Event")
End Sub
