DataGridView.ColumnToolTipTextChanged Event


Occurs when the ToolTipText property value changes for a column in the DataGridView.

 event System::Windows::Forms::DataGridViewColumnEventHandler ^ ColumnToolTipTextChanged;
public event System.Windows.Forms.DataGridViewColumnEventHandler ColumnToolTipTextChanged;
member this.ColumnToolTipTextChanged : System.Windows.Forms.DataGridViewColumnEventHandler 
Public Custom Event ColumnToolTipTextChanged As DataGridViewColumnEventHandler 


The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the ColumnToolTipTextChanged 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 DataGridView named DataGridView1. Then ensure that the event handler is associated with the ColumnToolTipTextChanged event.

private void DataGridView1_ColumnToolTipTextChanged(Object sender, DataGridViewColumnEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Column", e.Column );
MessageBox.Show(messageBoxCS.ToString(), "ColumnToolTipTextChanged Event" );
Private Sub DataGridView1_ColumnToolTipTextChanged(sender as Object, e as DataGridViewColumnEventArgs) _ 
     Handles DataGridView1.ColumnToolTipTextChanged

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "Column", e.Column)
    MessageBox.Show(messageBoxVB.ToString(),"ColumnToolTipTextChanged Event")

End Sub


For more information about how to handle events, see Handling and Raising Events.

Applies to

See also