void SeFormClosed(object sender, FormClosedEventArgs e)
{
_GridPanel.SuperGrid.DoFilterHelpClosingEvent(_GridPanel, _GridColumn, Se);
Se.FormClosed -= SeFormClosed;
Se = null;
}
private void CustomFilterHelpButtonClicked(object sender, CancelEventArgs e)
{
if (Se == null)
{
Se = new SampleExpr(_GridPanel.SuperGrid);
Se.TitleText = _filterHelpTitle;
Se.FormClosed += SeFormClosed;
}
if (_GridPanel.SuperGrid.DoFilterHelpOpeningEvent(_GridPanel, _GridColumn, Se) == true)
{
Se.Close();
}
else
{
Se.Show();
if (Se.WindowState == FormWindowState.Minimized)
Se.WindowState = FormWindowState.Normal;
Se.BringToFront();
}
e.Cancel = true;
}
/// <summary>
/// Handles invocation of FilterHelpClosing events
/// </summary>
internal void DoFilterHelpClosingEvent(GridPanel panel, GridColumn column, SampleExpr sampleExpr)
{
if (FilterHelpClosing != null)
{
GridFilterHelpClosingEventArgs ev = new
GridFilterHelpClosingEventArgs(panel, column, sampleExpr);
FilterHelpClosing(this, ev);
}
}
/// <summary>
/// Handles invocation of FilterHelpOpening events
/// </summary>
internal bool DoFilterHelpOpeningEvent(GridPanel panel, GridColumn column, SampleExpr sampleExpr)
{
if (FilterHelpOpening != null)
{
GridFilterHelpOpeningEventArgs ev = new
GridFilterHelpOpeningEventArgs(panel, column, sampleExpr);
FilterHelpOpening(this, ev);
return (ev.Cancel);
}
return (false);
}
///<summary>
/// GridFilterHelpOpeningEventArgs
///</summary>
///<param name="gridPanel"></param>
///<param name="gridColumn"></param>
///<param name="sampleExpr"></param>
public GridFilterHelpOpeningEventArgs(
GridPanel gridPanel, GridColumn gridColumn, SampleExpr sampleExpr)
: base(gridPanel, gridColumn)
{
_SampleExpr = sampleExpr;
}