Manoj Kumar said:

If it is a Interger column then you can set MinValue as 1

ultragrid.DisplayLayout.Bands[0].Columns["ColumnOne"].MinValue =1;

I don't think that's a good idea. If the user goes into the cell and tries to edit it and then leaves with an empty cell, intended to put a 0 back into the cell, it will raise an exception, since the MinValue is 1.

There's no easy to way to make the cell blank when it's a 0. You would have to use a filter of some kind. Probably the easiest thing to do would be to use a DataFilter to translate a 0 to an empty string and vice versa.

this is what i have at the moment

 Private Sub ClearLeadingZeros(ByRef WorkingGrid As UltraGrid, Optional ByVal StartCol As Integer = 0)
        Dim iCols As Integer = 0
        Dim ugRow As UltraGridRow

        For Each ugRow In WorkingGrid.Rows.GetRowEnumerator(GridRowType.DataRow, Nothing, Nothing)
            For iCols = StartCol To WorkingGrid.DisplayLayout.Bands(0).Columns.Count - 1
                If ugRow.Cells(iCols).Value.ToString = "0" Then
                    ugRow.Cells(iCols).Value = -1
                End If
            Next
        Next

    End Sub

but would like to blank the cell instead changing value to -1

am i close to my solution?

Thanks.

A DataFilter is an interface that allows you to intercept the value as it is transferred from the owner, editor, and display.

Create a class and implement the IEditorDataFilter interface that handles the EditorToDisplay and DisplayToEditor conversions.

In DisplayToEditor, you translate an emprt string or null into a 0.

In EditorToDisplay, you reverse that, translating a 0 into an empty string.

The DataFilter might looks something like this:

    public class ZeroAsBlankDataFilter : IEditorDataFilter
    {
        #region IEditorDataFilter Members

        object IEditorDataFilter.Convert(EditorDataFilterConvertArgs conversionArgs)
        {
            switch (conversionArgs.Direction)
            {
                case ConversionDirection.DisplayToEditor:
                    if (conversionArgs.Value is DBNull || conversionArgs.Value == null || conversionArgs.Value.ToString().Length == 0)
                    {
                        conversionArgs.Handled = true;
                        return 0;
                    }
                    break;

                case ConversionDirection.EditorToDisplay:
                    if (conversionArgs.Value is int && ((int)conversionArgs.Value) == 0)
                    {                    
                        conversionArgs.Handled = true;
                        return null;
                    }
                    break;
            }

            return conversionArgs.Value;
        }

        #endregion
    }

And you assign it to the grid like this:

        private void ultraGrid1_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
        {
            EditorWithText editorWithText = new EditorWithText();
            editorWithText.DataFilter = new ZeroAsBlankDataFilter();
            e.Layout.Bands[0].Columns["Column 0"].Editor = editorWithText;
        }

You can create a single EditorWithText and assign it to as many columns as you like.

hi thanks for you respond

i was able to translate the class from c# to vb net but i have problems with the funtion where i assign the function to the columns

Private Sub UltraGrid1_InitializeLayout(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs) Handles UltraGrid1.InitializeLayout
        Dim editorWT As EditorWithTextOwner

        editorWT.DataFilter = New ZeroAsBlankDataFilter()
        e.Layout.Bands(0).Columns("Column 0").Editor = editorWT

    End Sub

where EditorWithText does not exist but exist  EditorWithTextOwner and is especting something, dont know if im correct.

Thanks.

No, EditorWithTextOwner is not what you need.

It's Infragistics.Win.EditorWithText