I'm using a "RadGridView" in my application. The grid is in a border with HorizontalAlignment="Stretch". I'm having 8 columns with only 2 of them given fixed widths. Since I want my grid to fill the horizontal space I'm setting the columns width in form of "*" values (e.g. 50* or 100*). Every thing works fine if the amount of data bound is small up-till around 50-70 max. When I bind a collection with more data like around 100-200 the UI starts to distort. The columns do not resize to take the whole space (Se the attached image). I need help asap on this.