Georgi,

Thanks for the reminder that I wanted to post some more on what I did...  I did eventually get this grid to look how I needed, but it did take a lot of time and effort...

I ended up taking 3 different approaches to get all of the borders to work.

For the headers (I had 2 rows in the Headers) I used the Initalize_Layout event (where I added the second row of headers) and set the caption of the HeaderLayout objects to contain a div with a specific css class name. Then, I set these classes to have a border on the top and left sides. I only set 2 sides to have a border because border-collapse did not work anymore (because the divs are seperated by cell boundries). Here is a sample of this code:

for (int i = 0; i < e.Layout.Bands[0].HeaderLayout.Count; i++)
{
 colHead = e.Layout.Bands[0].HeaderLayout[i] as ColumnHeader;
 if (colHead.RowLayoutColumnInfo.OriginY == 1 && !String.IsNullOrEmpty(colHead.Caption))
 {
  colHead.Caption = String.Format(@"<div class=""HeaderDiv0"">{0}</div>", colHead.Caption);
 }
 if (colHead.RowLayoutColumnInfo.OriginY == 0 && !String.IsNullOrEmpty(colHead.Caption))
 {
  colHead.Caption = String.Format(@"<div class=""HeaderDiv1"">{0}</div>", colHead.Caption);
 }
}

On the far left of my grid, I had 2 "vertical headers", essentially 2 columns that were header-like information. For these, I used the DataBound event and set a CellStyle.CssClass value for these 2 columns. In these css classes, I defined a standard border. This was ok because these columns were also fixed, so they did not affect the scrolling area of the grid. Here is a sample of setting these CssClass properties:

grid.Columns[0].MergeCells = true;
grid.Columns[0].CellStyle.CssClass = "c0";
grid.Columns[0].Width = new Unit(75);

grid.Columns[1].CellStyle.CssClass = "c1";
grid.Columns[1].Width = new Unit(200);

For the main, scrollable, area of the grid, I needed to set both a background color and a background image, as these were meant to show a status of Red, Yellow, or Green. For these I could have used the same approach as I used for the headers, with a div inserted in the value, however there are 5760 cells, and that really added a noticable weight to the page, so instead I drew the borders onto the images, again, only to the top and left sides.

In addition to all of the work to get this grid to look right, we also needed it to export right, which was another challenge in itself, as the ultrawebgrid does not export multiple headers, at least not until version 2011 v2, I believe. Between that and our need to set the borders, column and row spans, and background colors, we had to write a pretty extensive export routine.