Can anyone explain to me how to make grouping for the DataGridView in C# because I have no idea about this topic?
I searched on the websites but I didn't understand anything.
Also I found somethings about GridViewHelper but I didn't know how to deal with it because it gives me this error (The type or namespace name 'GridViewHelper' could not be found (are you missing a using directive or an assembly reference
Note: I am using Windows Forms C#
I want to make it exactly like this one according to name column