Checkbox in Column Header of GGC

[Lance]

How do I change a column header of GGC to be a checkbox that can listen to check/uncheck event?

[Administrator]

You can use QueryCellStyleInfo to set the checkbox into a single header cell. You will need to have a varaible that maintains the value of this checkbox as well. You can set this in a TableControlCellClick event.

private bool col2Check = false;
private void gridGroupingControl1_QueryCellStyleInfo(object sender, GridTableCellStyleInfoEventArgs e)
{
	if(e.TableCellIdentity.TableCellType == GridTableCellType.ColumnHeaderCell 
		&& e.TableCellIdentity.Column.Name == "Col2")
	{
		e.Style.CellType = "CheckBox";
		e.Style.Description = e.Style.Text;
		e.Style.CellValue = this.col2Check;
		e.Style.Enabled = true;
		//e.Style.BackColor = SystemColors.Window;
		//e.Style.CellAppearance = GridCellAppearance.Raised;
	}
}

private void gridGroupingControl1_TableControlCellClick(object sender, GridTableControlCellClickEventArgs e)
{
	GridTableCellStyleInfo style = e.TableControl.Model[e.Inner.RowIndex, e.Inner.ColIndex];
	if(style.TableCellIdentity.TableCellType == GridTableCellType.ColumnHeaderCell 
		&& style.TableCellIdentity.Column.Name == "Col2")
	{
		this.col2Check = !this.col2Check;
		e.Inner.Cancel = true;
	}
}

[Lance]

thanks! it worked well. didn''t know that i have to use code to set the check state of the checkbox.

i was able to set the checkbox property from tabledescriptor->columns->[columnname]->appearance->columnheadercell

[Shankar Ramasubramanian]

Clay,
I have check boxes in the header cell of nested table. Then I need Col2Check variable to be a array of boolean values. My question to you is How do i get the row index of the parent table so i can store whether the check box is checked or not.

[Administrator]

style.TableCellIdentity.ParentRecord will give you a reference to the parent record. You can then use this reference to get the row index in the parent table of a nested table.

Example:

Record r = style.TableCellIdentity.ParentRecord;
int rowIndex = r.ParantTable.DisplayElements.IndexOf(r);

Stefan

>Clay,
> I have check boxes in the header cell of nested table. Then I need Col2Check variable to be a array of boolean values. My question to you is How do i get the row index of the parent table so i can store whether the check box is checked or not.

[Shankar Ramasubramanian]

stefan,
I''m trying to get parent record in QueryCellStyleInfo event. ParentRecord is always nothing. Any suggestion. Thanks

[Administrator]

Shankar,

when the current context is that the element is a column header row of a nested table and you want to get the record that this nested table belongs to, you could do this:

Element columnHeaderRow;
ChildTable childTable = columnHeaderRow.ParentChildTable;
NestedTable nestedTable = childTable.ParentNestedTable;
Record parentRecord = nestedTable.ParentRecord;

The key is to get first the ChildTable.ParentNestedTable and on that nested table call ParentRecord.

Stefan

>stefan,
> I''m trying to get parent record in QueryCellStyleInfo event. ParentRecord is always nothing. Any suggestion. Thanks