/// <summary>
/// Shows the popup.
/// </summary>
/// <param name="ColumnIndex">Index of the column.</param>
public void ShowPopup(int ColumnIndex)
{
if (mColumnFilterList[ColumnIndex] == null)
{
return; // non-data column
}
int OldColumnIndex = mCurrentColumnIndex;
mCurrentColumnIndex = ColumnIndex;
Rectangle r = mDataGridView.GetCellDisplayRectangle(ColumnIndex, -1, false); // get the header size info
FilterHost.CurrentColumnFilter = mColumnFilterList[ColumnIndex];
try
{
//use "try" because old column could have been removed
mDataGridView.InvalidateCell(OldColumnIndex, -1);
}
catch (Exception)
{
}
ColumnFilterEventArgs e = new ColumnFilterEventArgs(mDataGridView.Columns[ColumnIndex], mColumnFilterList[ColumnIndex]);
if (PopupShowing != null)
{
PopupShowing(this, e);
}
if (!e.Handled)
{
FilterHost.Popup.Show(mDataGridView, r.X + r.Width - 4, r.Y - 10); // show the filterhost popup near the column
}
FilterHost.Popup.Focus();
mDataGridView.InvalidateCell(mCurrentColumnIndex, -1); // Force header repaint (to show a selection yellow frame)
}
private void CreateColumnFilter(DataGridViewColumn c)
{
if (!mAutoCreateFilters)
{
return;
}
//Raise the event about column filter creation
ColumnFilterEventArgs e = new ColumnFilterEventArgs(c, null);
if (ColumnFilterAdding != null)
{
ColumnFilterAdding(this, e);
}
//if not provided, by an event handler, proceed with standard filter creation
if (e.ColumnFilter == null)
{
Type DataType = null;
if (c.DataPropertyName != "")
{
DataType = mBoundDataView.Table.Columns[c.DataPropertyName].DataType;
switch (c.GetType().Name)
{
case "DataGridViewComboBoxColumn":
e.ColumnFilter = new DgvComboBoxColumnFilter();
break;
case "DataGridViewCheckBoxColumn":
e.ColumnFilter = new DgvCheckBoxColumnFilter();
break;
case "DataGridViewTextBoxColumn":
if (DataType == typeof(DateTime))
{
e.ColumnFilter = new DgvDateColumnFilter();
}
else
{
e.ColumnFilter = new DgvTextBoxColumnFilter();
}
break;
case "DataGridViewImageColumn":
e.ColumnFilter = new DgvComboBoxImageColumnFilter();
break;
}
}
}
mColumnFilterList[c.Index] = e.ColumnFilter;
if (e.ColumnFilter != null) // == null when non-data column
{
if (ColumnFilterAdded != null)
{
ColumnFilterAdded(this, e);
}
e.ColumnFilter.Init(this, FilterHost, c, mBoundDataView);
}
}