For example: DataGridView.Columns["ColumnName"].HeaderCell.Style.BackColor = Color.Red; Regards:rose:

actually when u use masterpage concept asp.net add pageid before each control so for accessing any control from javascript prefix pageid with control u can check pageid by viewsource of your file Mahendra

Hi there, That's possible that you can link to a javascript file with some functions in the master page so that you can use them in the content page. I'm afraid that there's something wrong in your case, so you might be more specific how you use the client side file in the master page.