Question

As I have check box in gridview if i dont select any one checkbox and if i click asp button then i have to show message to user to select checkbox

awaiting response

Answer 1

Should be something like you need…

Boolean Selected = false;
    for (int count = 0; count < grd.Rows.Count; count++)
    {
        if (((CheckBox)grd.Rows[count].FindControl("yourCheckbox")).Checked)
        {
            Selected = true;
        }
    }
if (Selected == false)
    {
        //your message goes here.
    }

if you need javascript code…

 function CheckIfSelect() {
        var frm = document.forms[0];
        var Selected=false;
        for (i = 0; i < frm.elements.length; i++) {
            if (frm.elements[i].type == "checkbox") {
                if(frm.elements[i].checked)
                {
                Selected=true;
                break;
                }
            }
            if(Selected==false)
            {
            //your message goes here
            }
        }
    }