Hi Mike,

 Yes, it's all related. So I've attached an image for you. There are 4 screen shots from our application - excuse the brevity of it but I've needed to hide much of the screen for commercial sensitivity.

1. This is the "default" view. You can see the UltraComboEditor and UltraCheckboxEditor controls are displaying nicely in the grid
2. If I then click on the "red hand" column row filter you can see that I get the filter appear with a dropdown containing a blank (which is actually a 16x16 transparent PNG), a green hand and a red hand.
3. If I select one though you can see the image but also what I presume is some kind of text editor area ? I can use the up & down arrows whilst this has focus and the filter changes between the 3 image options.
4. If I move the focus off the filter elsewhere onto the grid then the filter correctly displays the icon.

So I *think* all that is required is suppress some kind of editor that's appearing on the dropdown.

This the code that specifically sets up this column (XXX replaces the actual name). There may of course be some things in here that aren't required ! FYI we've had to largely avoid using the Wizards & Editors as it makes trying to track changes in source control quite difficult so we pretty much set up much of the grid in code (which works pretty well).

        Private Sub ManageGridColumn_xxx(ByVal band As UltraGridBand)
            With band.Columns(_column_xxx)
                .EditorComponent = Me.ultraComboEditorXXX
                .Width = _column_ComboBoxColumnWidth
                .MaxWidth = .Width
                .MinWidth = .Width
                .LockedWidth = True
                .AllowRowFiltering = Infragistics.Win.DefaultableBoolean.True

                .FilterClearButtonVisible = Infragistics.Win.DefaultableBoolean.True

                .FilterComparisonStyle = FilterComparisonStyle.ValueOnly
                .FilterOperatorLocation = FilterOperatorLocation.Hidden
                .FilterOperatorDefaultValue = FilterOperatorDefaultValue.Equals
                .FilterOperandStyle = FilterOperandStyle.UseColumnEditor

            End With

            Me.ultraComboEditorXXX.ValueList.DisplayStyle = Infragistics.Win.ValueListDisplayStyle.Picture

            ManageGridColumn_UpdateHeader(band.Columns(_column_XXX), My.Resources.redHand_16x16)
        End Sub

        Private Sub ManageGridColumn_UpdateHeader(ByVal column As UltraGridColumn, ByVal headerImage As System.Drawing.Bitmap)

            Dim _headerIcon As Infragistics.Win.Appearance = New Infragistics.Win.Appearance
            With _headerIcon
                .Image = headerImage
                .ImageHAlign = Infragistics.Win.HAlign.Center
            End With

            With column
                .Header.Appearance = _headerIcon
                .Header.ToolTipText = .Header.Caption
                .Header.Caption = String.Empty
            End With

        End Sub

As a separate note I've found (and to be fair as this is a validated system we have to use a specific validated version of the infragistics controls (2089) so it's quite "old") that if you go into the glyph editor on the UltraCheckBoxEditor control and load up your icons with transparency that if you go back into that control after saving the newly uploads images then the transparency on the images is lost and you get white boxes etc., around the icons in the grid. Don't know if this is a known bug or not?

thanks again,

Andy

Hi Andy,

You are correct up to a point - the grid does use an editor to provide the dropdown list there. But I don't know any reason why it would be showing a blank space or empty text there. It certainly should not be doing that.

I'm afraid I can't begin to guess what that is exactly or how to suppress it without seeing it in action. Can you provide a small sample project that demonstrates this behavior so we can look into it?

I went back and looked at your previous case and the sample I posted for you there and in that case you explicitly said you wanted the filter cell to show the text. So my original sample shows the text in the cell. I actually had to jump through some hoops to get it to work that way.

In these screen shots, though, it seems like you no longer want the text to display. Is that right?

I went back to my previous sample and I was able to achieve that with a couple of small changes. First, I set:

_band.Columns("Int32 1").FilterOperandStyle = FilterOperandStyle.DropDownList

This prevent the user from typing into the filter cell and makes it so they can only choose an item from the list. This eliminates the caret in the filter cell which might be part of what you are seeing.

Second, in UltraGrid1_BeforeRowFilterDropDownPopulate, I set:

e.ValueList.DisplayStyle = ValueListDisplayStyle.Picture

This eliminates the text from displaying in the filter cell.

Hi Mike,

 Thanks for all your assistance. I've finally got it working but not via the method above (well not quite !). Switching to using the FilterOperandStyle to DropDownList (or anything else) rather than UseColumnEditor means that we don't see the icons in the filter and we only see blanks / not blanks.

However, going on from your suggestion that it's the caret in the filter cell (or part of text that would be displaying that "shouldn't" display) I figured, well if I don't want to see it, what's the least way can do that.

.FilterCellAppearance.FontData.SizeInPoints = 0.1

And the problem has magically gone away !

It now behaves and functions as we need.

Thanks again,

Andy

Hi Andy, 

Andy Macnaughton-Jon said:

witching to using the FilterOperandStyle to DropDownList (or anything else) rather than UseColumnEditor means that we don't see the icons in the filter and we only see blanks / not blanks.

Hm, that's odd. Maybe that's because in my original sample, I was manually populating the dropdown list in the BeforeRowFilterDropDown event and you are no longer doing that. 

Andy Macnaughton-Jon said:

However, going on from your suggestion that it's the caret in the filter cell (or part of text that would be displaying that "shouldn't" display) I figured, well if I don't want to see it, what's the least way can do that.

.FilterCellAppearance.FontData.SizeInPoints = 0.1

Okay. You shouldn't have to do that, but if it's working for you and you are happy with it, I guess that's fine. :)