DataGrid.OnColumnDisplayIndexChanged(DataGridColumnEventArgs) Method
Definition
Important
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Raises the ColumnDisplayIndexChanged event.
protected public:
virtual void OnColumnDisplayIndexChanged(System::Windows::Controls::DataGridColumnEventArgs ^ e);protected internal virtual void OnColumnDisplayIndexChanged (System.Windows.Controls.DataGridColumnEventArgs e);abstract member OnColumnDisplayIndexChanged : System.Windows.Controls.DataGridColumnEventArgs -> unit
override this.OnColumnDisplayIndexChanged : System.Windows.Controls.DataGridColumnEventArgs -> unitProtected Friend Overridable Sub OnColumnDisplayIndexChanged (e As DataGridColumnEventArgs)Parameters
The data for the event.
Remarks
DataGrid requires that the DisplayIndex property of all columns must be unique integers from 0 to ColumnsCount -1. Therefore, when the DisplayIndex of one column changes, the change will typically cause the DisplayIndex of other columns to change too.
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnColumnDisplayIndexChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors
When overriding OnColumnDisplayIndexChanged(DataGridColumnEventArgs) in a derived class, be sure to call the base class' OnColumnDisplayIndexChanged(DataGridColumnEventArgs) method so that registered delegates receive the event.
