GGC Image in column Header

[Chris Wescott]

HI,
I was wondering if it is possible to add an image to the header cell of a GGC. I just need to show a little filter funnel or something to let the user know that the column has been filtered.

Regards,
Chris Wescott

[Administrator]

Hi Chris,

Yes, it is possible to draw an image in the column header cell by handling the TableControlCellDrawn event. Below is a code snippet. Please also refer the sample TestErrorProvider in Syncfusion\Essential Studio\4.1.0.62\windows\Grid.Grouping.Windows\Samples\TestErrorProvider\

Private Sub gridGroupingControl1_TableControlCellDrawn(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlDrawCellEventArgs)
Dim style As GridTableCellStyleInfo = CType(e.Inner.Style, GridTableCellStyleInfo)

Dim ct As GridTableCellType = style.TableCellIdentity.TableCellType
If ct = GridTableCellType.ColumnHeaderCell AndAlso style.TableCellIdentity.Column.Name = "Value" Then
Try
GridStaticCellRenderer.DrawImage(e.Inner.Graphics, Me.imageList, 0, e.Inner.Bounds, False)
Catch
End Try
End If
End Sub

Regards,
Calvin.

[Chris Wescott]

This Work Great!!,
I just need a way to clear the image when I clear the sorting. ie, button click event, clear sort, needs to remove these images.

Regards,

Chris Wescott

[Administrator]

Hi Chris,

You can try having a flag and setting it in the button click event and then draw the image in the CellDrawn event handler accordingly. Below is a code snippet.

Private flag As Boolean = True

Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button1.Click
If Me.flag Then
Me.flag = False
Else
Me.flag = True
End If
Me.gridGroupingControl1.TableControl.Invalidate()

End Sub ''button1_Click

Private Sub gridGroupingControl1_TableControlCellDrawn(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlDrawCellEventArgs)
Dim style As GridTableCellStyleInfo = CType(e.Inner.Style, GridTableCellStyleInfo)

Dim ct As GridTableCellType = style.TableCellIdentity.TableCellType
If ct = GridTableCellType.ColumnHeaderCell AndAlso style.TableCellIdentity.Column.Name = "Value" AndAlso Me.flag Then

Try
GridStaticCellRenderer.DrawImage(e.Inner.Graphics, Me.imageList, 0, e.Inner.Bounds, False)
Catch
End Try
End If

End Sub ''gridGroupingControl1_TableControlCellDrawn

Regards,
Calvin.

[Chris Wescott]

Hi,
Thanks that worked but for future users I changed the cell drawn function to look like this

Private Sub gridGroupingControl1_TableControlCellDrawn(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlDrawCellEventArgs)
> Dim style As GridTableCellStyleInfo = CType(e.Inner.Style, GridTableCellStyleInfo)
>
> Dim ct As GridTableCellType = style.TableCellIdentity.TableCellType
> If ct = GridTableCellType.ColumnHeaderCell AndAlso style.TableCellIdentity.Column.Name = "Value" Then
>
> Try
if flag = true then
> GridStaticCellRenderer.DrawImage(e.Inner.Graphics, Me.imageList, 0, e.Inner.Bounds, False)
else
> GridStaticCellRenderer.DrawImage(e.Inner.Graphics, Nothing, 0, e.Inner.Bounds, False)

end if

> Catch
> End Try
> End If
>
> End Sub ''gridGroupingControl1_TableControlCellDrawn

Regards,

Chris Wescott