Checkbox in gridview

问题

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

回答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
            }
        }
    }

回答2:

If you want to do this client side you could use a library like jQuery to iterate through the checkboxes.

If you want to do this server side, you will need to reenumerate the controls on postback, and check the Checked value. Alternatively if this GridView binds to a DataSource, check the posted back values within the DataSource.

来源：https://stackoverflow.com/questions/1839558/checkbox-in-gridview