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Multiline-Cell - Dropdown-Editor resized via code - how to align it to be always completely visible?
posted

Hi again,

say you have an UltraGrid and a Datasource with some columns. The last column is a "notes"-column. It should be multiline and the editor for that cell should have a size that is independend from the column width, so that the user can always enter easily without resizing the grid first.

This is possible via the "BeforeAutoSizeEdit"-Event.

problem is: The resized editor (wider than the cell) is:

- not right aligned with the cell if the wider editor won't fit inside the grid

- and not above the grid, so that it could grow over it and beyond the form if needed

If you also set the autosize option to resize-last-column, you will run into this problem very often (when having small dialogs with grids)

You can reproduce that:

- Put an UltraGrid on a Form

- with a DataSource having 4 or 5 columns. The last on is the notes column.

Init it like this:

this.grid1.BeforeAutoSizeEdit += grid1_BeforeAutoSizeEdit;
this.grid1.DisplayLayout.Bands[0].Columns["Notes"].AutoSizeEdit = DefaultableBoolean.True;
this.grid1.DisplayLayout.Bands[0].Columns["Notes"].CellMultiLine = DefaultableBoolean.True;
this.grid1.DisplayLayout.AutoFitStyle = AutoFitStyle.ExtendLastColumn; //optional

and of course the BeforeAutoSizeEdit function:

        void dfgrid1_BeforeAutoSizeEdit(object sender, CancelableAutoSizeEditEventArgs e)
        {
            UltraGrid grid = sender as UltraGrid;
            if (grid == null)
                return;
 
            if (grid.ActiveCell == null)
                return;
 
            if (grid.ActiveCell.Column.Width < 400)
                e.StartWidth = 400;
 
 
 
            if (grid.ActiveCell.Column.CellMultiLine == DefaultableBoolean.True &&
                grid.ActiveCell.Row.Height < 100)
                e.StartHeight = 100;
 
            e.MaxHeight = 400;
            e.MaxWidth = 400;
 
            bool cancelAutoSizeEdit = false;
            if (cancelAutoSizeEdit)
                e.Cancel = true;
        }

I've attached a screenshot for better understanding.

Question is:
- is there a way to make that dropdown-Editor right-aligned if it doesn't fit inside the grid?
- or is there way to make it stay above the grid, so that it could grow beyong it?
- or is there a clever work-around using some other kind of editor that would do the trick? The goal is, to let the user easily enter multiline notes in a rather small column.

Thanks a lot
Boris
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  • 23930
    Offline posted

    Hi Boris,

    Thank you for posting in our forums.

    What you could do in order to right align the editor is to use the CreationFilter interface. You can use this interface, in order to modify the UIElements of the grid. For more information, please visit this link:

    http://help.infragistics.com/Help/Doc/WinForms/2012.2/CLR4.0/HTML/Win_Creation_Filter.html

    In the interface set location of the editor that is displayed and its EditorWithTextUIElement. This will display the editor in the correct place and it will prevent it from moving while typing.

    I have attached a sample which demonstrates this approach.

    Please let me know if you have any additional questions.

    WG_NotesEditor.zip
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