Hi Damien,

The designer-generated code is often different from code you would use at run-time. The designer code relies on operations that only occur in the designer, like ISupportInitialize calls.

Anyway, there are two problems with what you have here.

The first is that you are creating a new group, but that group is never added to the band. In fact, you can't create a new group instance and then add it to the band, you have to use the band.Groups.Add method to add groups.

The second problem is the way you are setting the parent group of the column.. or rather... that you are not setting it. ParentGroupIndex and ParentGroupKey are only used during deserialization. These properties are hidden from Intellisense deliberately so that you will not use them. You found them by looking at the designer code, of course. But that won't work. You need to use the ParentGroup property, instead.

Here's your code, modified so that it works. I used the InitializeLayout event of the grid, which is a good place to do this kind of thing.

        private void ultraGrid1_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
        {
            e.Layout.Bands[0].RowLayoutStyle = RowLayoutStyle.GroupLayout;
            UltraGridGroup g;
            UltraGridColumn c;

            //Group
            //g = new UltraGridGroup();
            //g.Key = "Columns";
            g = e.Layout.Bands[0].Groups.Add("Columns");
            g.RowLayoutGroupInfo.OriginX = 0;
            g.RowLayoutGroupInfo.OriginY = 0;
            g.RowLayoutGroupInfo.SpanX = 2;
            g.RowLayoutGroupInfo.SpanY = 2;

            //Column1
            c = this.ultraGrid1.DisplayLayout.Bands[0].Columns["Column1"];
            c.RowLayoutColumnInfo.OriginX = 0;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            //c.RowLayoutColumnInfo.ParentGroupIndex = 0;
            //c.RowLayoutColumnInfo.ParentGroupKey = "Columns";
            c.RowLayoutColumnInfo.ParentGroup = g;

            //Column2
            c = this.ultraGrid1.DisplayLayout.Bands[0].Columns["Column2"];
            c.RowLayoutColumnInfo.OriginX = 1;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            //c.RowLayoutColumnInfo.ParentGroupIndex = 0;
            //c.RowLayoutColumnInfo.ParentGroupKey = "Columns";
            c.RowLayoutColumnInfo.ParentGroup = g;

            this.ultraGrid1.DisplayLayout.Bands[0].Groups.Add(g);
        }

Now that I am sure of the proper way to do it, I have moved to my actual scenario. Here is what I want:

and here is what I got:

Obviously, there is something wrong in the spans somewhere, but I can't figure where.

Here is my code again:

       private void ultraGrid1_InitializeLayout(object sender, InitializeLayoutEventArgs e)
        {
            e.Layout.Bands[0].RowLayoutStyle = RowLayoutStyle.GroupLayout;

            UltraGridGroup g0, g1;
            UltraGridColumn c;

            //Group Categories
            g0 = e.Layout.Bands[0].Groups.Add("Categories");
            g0.RowLayoutGroupInfo.OriginX = 0;
            g0.RowLayoutGroupInfo.OriginY = 0;
            g0.RowLayoutGroupInfo.SpanX = 2;
            g0.RowLayoutGroupInfo.SpanY = 3;
            g0.RowLayoutGroupInfo.LabelSpan = 2;

            //Column CategoryName
            c = e.Layout.Bands[0].Columns["CategoryName"];
            c.RowLayoutColumnInfo.OriginX = 0;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            c.RowLayoutColumnInfo.ParentGroup = g0;

            //Column CategoryDescription
            c = e.Layout.Bands[0].Columns["CategoryDescription"];
            c.RowLayoutColumnInfo.OriginX = 1;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            c.RowLayoutColumnInfo.ParentGroup = g0;


            //Group Cases
            g0 = e.Layout.Bands[0].Groups.Add("Cases");
            g0.RowLayoutGroupInfo.OriginX = 2;
            g0.RowLayoutGroupInfo.OriginY = 0;
            g0.RowLayoutGroupInfo.SpanX = 4;
            g0.RowLayoutGroupInfo.SpanY = 3;
           
            //Group Case1
            g1 = e.Layout.Bands[0].Groups.Add("Case1");
            g1.RowLayoutGroupInfo.OriginX = 0;
            g1.RowLayoutGroupInfo.OriginY = 0;
            g1.RowLayoutGroupInfo.SpanX = 2;
            g1.RowLayoutGroupInfo.SpanY = 2;
            g1.RowLayoutGroupInfo.ParentGroup = g0;

            //Column Case1SubCase1
            c = e.Layout.Bands[0].Columns["Case1SubCase1"];
            c.RowLayoutColumnInfo.OriginX = 0;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            c.RowLayoutColumnInfo.ParentGroup = g1;

            //Column Case1SubCase2
            c = e.Layout.Bands[0].Columns["Case1SubCase2"];
            c.RowLayoutColumnInfo.OriginX = 1;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            c.RowLayoutColumnInfo.ParentGroup = g1;

            //Group Case2
            g1 = e.Layout.Bands[0].Groups.Add("Case2");
            g1.RowLayoutGroupInfo.OriginX = 2;
            g1.RowLayoutGroupInfo.OriginY = 0;
            g1.RowLayoutGroupInfo.SpanX = 2;
            g1.RowLayoutGroupInfo.SpanY = 2;
            g1.RowLayoutGroupInfo.ParentGroup = g0;
           
            //Column Case2SubCase1
            c = e.Layout.Bands[0].Columns["Case2SubCase1"];
            c.RowLayoutColumnInfo.OriginX = 0;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            c.RowLayoutColumnInfo.ParentGroup = g1;

            //Column Case2SubCase2
            c = e.Layout.Bands[0].Columns["Case2SubCase2"];
            c.RowLayoutColumnInfo.OriginX = 1;
            c.RowLayoutColumnInfo.OriginY = 0;
            c.RowLayoutColumnInfo.SpanX = 1;
            c.RowLayoutColumnInfo.SpanY = 1;
            c.RowLayoutColumnInfo.ParentGroup = g1;
        }

I am not sure as to what origins and spans refer to. Do origins refer to the parent group? Do spans refer to the direct child of the group? To the lowest-level ones?

Best regards,

Damien