Mike,

I am deleting/adding rows through the data source, and your suggestion does seem to work.  However, in the OnInitializeGroupByRow handler, the count of items in the description string is still not correct, but the row count for the group is correct.  So basically I can no longer trust the count in the description string and will have to customize the count as well by using the row count.

Thanks for the help,

~Corey

Hi Corey,

So your code is pulling apart the Description string inside the InitializeGroupByRow event and the Description hasn't been updated yet?

I would probably build the string based on the properties of the grid, anyway. The Count property on the rows collection is more reliable.

But just for fun, I tried this out and it seems to work fine for me. The Description of the row shows the correct number of items inside InitializeGroupByRow when I do this. I tested it by deleting a row in a button click event and then immediately calling Refresh:

        private void button1_Click(object sender, EventArgs e)
        {
            this.dt1.Rows[0].Delete();
            this.ultraGrid1.Rows.Refresh(RefreshRow.FireInitializeRow);
        }

And then I just displayed the row's Description inside of InitializeGroupByRow.

        private void ultraGrid1_InitializeGroupByRow(object sender, InitializeGroupByRowEventArgs e)
        {
            Debug.WriteLine(e.Row.Description);
        }

When I ran my app, I had 32 items in the list. My Debug.Writeline for this group shows the following:

columnName : value (31 items)

So that seems right.Of course, I only have 100 rows in my grid, so maybe this is a timing issue because you have more rows. If that is the case, then you should be able to work around it using a BeginInvoke.

        private void button1_Click(object sender, EventArgs e)
        {
            this.dt1.Rows[0].Delete();
            this.BeginInvoke(new MethodInvoker(this.FireInitializeRow));
        }

        private void FireInitializeRow()
        {
            this.ultraGrid1.Rows.Refresh(RefreshRow.FireInitializeRow);
        }

Ok, thanks for the help!

~Corey

Hi Corey,

Oh, yeah, now that I think about it, that makes perfect sense. The reason the count is off is because you set the Description property. Once you set it, it will never be automatically updated again. Your text takes precedence over the auto-generated description.

That's another reason why you should not do a replace or use the existing description as a basis for the new description - because the grid will never update that description again.

So you will need to build the description string based on the properties of the row.

Mike,

That does look similar to what I am doing.  One difference might be that I am first customizing the description when the grid loads and a particular column is grouped on.  

e.Row.Description = e.Row.Description.Replace(textToReplace);

Then as you did above during a delete, I am looking again at the description with that same code and the count is off.

~Corey