RadGridView Groupby 2 Columns header format

[Georgios]

Hello everyone,
I'm trying to group my gridView by two columns named "Category" and "SubCategory". I'm using the following code:

GroupDescriptor descriptor = new GroupDescriptor();
descriptor.GroupNames.Add("Cateogry", ListSortDirection.Ascending);
descriptor.GroupNames.Add("SubCateogry", ListSortDirection.Ascending);
descriptor.Format = "{0}: {1}";
this.radGridView1.GroupDescriptors.Add(descriptor);

The text of the header of the grouping is like this:
Category, SubCateogory: "Value of Category", "Value of SubCategory".
What I want to do is to format the descriptor so as the output would be:
Category: "Value of Category", SubCateogory:"Value of SubCategory"
I tried to achieve this in many different ways, using expressions too, but I didn't manage anything.

Is it possible to do this using the format property or any other way?
A snapshot follows.

Thank you in Advance
Georgios

[Richard Slade]

Hello,

You should be able to achieve this using the GroupSummaryEvaluate event which allows you to format the group header row. Please have a look at this help topic for more information

If you need further help, please let me know
thanks
Richard

[Georgios]

Thank you Richard, that was really helpful.

[Richard Slade]

You're welcome. Glad I could be of help
Richard