Hi Mike,

Thanks for your reply. So to explain what happens in more detail:

We open the Visual Studio designer for a form which contains a number of databound UltraGrids (bound to an Infragistics UltraDataSource via the designer) and other controls. Some of the columns in these UltraGrids have various settings such as "hidden". The designer.cs code looks like this before the changes:

            //
            // SSDBGrid2
            //
            this.SSDBGrid2.DataSource = this.SSDBGrid2DS;
            UltraGridColumn31.Header.VisiblePosition = 0;
            UltraGridColumn31.Hidden = true;
            UltraGridColumn31.Width = 123;
            UltraGridColumn30.Header.VisiblePosition = 1;
            UltraGridColumn30.Width = 72;
            UltraGridColumn29.Header.VisiblePosition = 2;
            UltraGridColumn29.Width = 64;
            UltraGridColumn28.Header.Caption = "Inv. Amt.";
            UltraGridColumn28.Header.VisiblePosition = 3;
            UltraGridColumn28.Width = 76;
            UltraGridColumn27.Header.VisiblePosition = 4;
            UltraGridColumn27.Width = 76;
            UltraGridColumn26.Header.VisiblePosition = 5;
            UltraGridColumn26.Width = 76;
            UltraGridColumn25.Header.VisiblePosition = 6;
            UltraGridColumn25.Hidden = true;
            UltraGridColumn25.Width = 123;
            UltraGridColumn24.Header.VisiblePosition = 7;
            UltraGridColumn24.Hidden = true;
            UltraGridColumn24.Width = 123;
            ultraGridBand6.Columns.AddRange(new object[] {
            UltraGridColumn31,
            UltraGridColumn30,
            UltraGridColumn29,
            UltraGridColumn28,
            UltraGridColumn27,
            UltraGridColumn26,
            UltraGridColumn25,
            UltraGridColumn24});
            this.SSDBGrid2.DisplayLayout.BandsSerializer.Add(ultraGridBand6);
            this.SSDBGrid2.DisplayLayout.BorderStyle = Infragistics.Win.UIElementBorderStyle.None;
           

Upon changing anything on the designer, for example moving some buttons around, the designer files gets rewritten and various items in the designer.cs file moved around. After this happen, the designer code looks like this:

            //
            // SSDBGrid2
            //
            this.SSDBGrid2.ActiveRowIndex = 0;
            this.SSDBGrid2.DataSource = this.SSDBGrid2DS;
            this.SSDBGrid2.DisplayLayout.BorderStyle = Infragistics.Win.UIElementBorderStyle.None;
           

As you can see, all of the column information has been lost. The columns still display of course, because they're in the datasource, but every customization made to the columns of the UltraGrid seems to be gone.

I hope that helps you track it down. If you have any idea what might be going, that would be helpful, we have over 150 forms with hundreds of UltraGrids on them, so hand editing here isn't a viable solution.

If you don't know what could be happening, we'll try our best to get you a sample, but it might be difficult.