datagridview cell formatting after data has been loaded from database -


please help!! i've spent 4 hours trying figure out , haven't been able make work. cannot format of datagridview cells after loading data access db. program runs , returns no errors, no satisfactory results. need format "description" red color there's no "numero"

 try         con.open()         da.fill(dt)         con.close()         dgvmain.datasource = dt         dgvmain             .columns("key").visible = false             .columns("masterid").visible = false             .columns("numero").headertext = "#"             .columns("numero").defaultcellstyle.alignment = datagridviewcontentalignment.middleright             .columns("numero").sortmode = datagridviewcolumnsortmode.notsortable             .columns("numero").width = 40             .columns("addemdum").visible = false             .columns("opens").visible = false             .columns("description").defaultcellstyle.alignment = datagridviewcontentalignment.middleleft             .columns("description").sortmode = datagridviewcolumnsortmode.notsortable             .columns("description").width = 710             .columns("sortnumber").visible = false             .columns("remarks").headertext = ""             .columns("remarks").sortmode = datagridviewcolumnsortmode.notsortable             .columns("remarks").width = 30             .columns("remarks").defaultcellstyle.forecolor = color.red             .columns("remarks").defaultcellstyle.font = new font("arial black", 9)             .columns("remarks").defaultcellstyle.alignment = datagridviewcontentalignment.topright             .columns("status").visible = false             .columns("pass").visible = false             .columns("fail").visible = false             .columns("requires_input").visible = false             .columns("input_data").visible = false             .columns("gig").visible = false             .columns("gignotes").visible = false             .columns("inspectiontype").visible = false             .columns("newitem").visible = false         end     catch ex exception         con.close()         msgbox(ex.message)         exit sub     end try    integer = 0 dgvmain.rows.count - 1         if dgvmain.rows(i).cells("numero").value.tostring = nothing             dgvmain.rows(i).cells("description").style.forecolor = color.red         end if      next


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