c# - Conditionally show buttons in DataGridView? -

how show buttons in cells of datagridview if, example, column has value?

private void dgv_cellformatting(object sender, datagridviewcellformattingeventargs e) {     var dgv = (datagridview)sender;     if (dgv.columns[e.columnindex].name == "btn")     {         var hide= dgv.rows[e.rowindex].cells[dgv.columns["a"].index].value dbnull;         var cell = dgv.rows[e.rowindex].cells[dgv.columns["b"].index];         if (hide)         {             //cell.value = null;             //cell = new datagridviewtextboxcell();             cell.visible = false; // dosn't work         }     } } 

probably best way bind item_databound (i believe that's it's called) on grid view. check column see if contains value need. can hide specific controls in cell (using of code in post):

cell.controls[0].visible = false;