CheckBox in Gridview Header

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I am having checkbox in Gridview Header , if i will check header checkbox it will check all the rows checkboxes and one more option when user submit the form data it should required atleast one checkbox checked.without using javascript function...only c# and asp.net code... plz help..

Posted 29-Aug-13 2:31am

Santosh4Passion

Updated 29-Aug-13 2:33am

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Thanks7872 · Accepted Answer · 2013-08-29T02:47:00

Please refer to this very basic code. I assume you have checkbox at first cell of gridview ( Cells[0] )

C#

int count=0;
for (int i = 0; i < GridView1.Rows.Count; i++)
{
     CheckBox chk= (CheckBox)GridView1.Rows[i].Cells[0].FindControl("CheckBox1");
     if (chk.Checked == true)
     {
       count++;
     }
}
if(count==0)
{
//no check box is checked take action accordingly
}
else
{
//Atleast one checkbox is checked proceed with the submit procedure
}

Regards..:)

Thomas ktg · Accepted Answer · 2013-08-29T03:04:00

Hi

You also do this finding the header template and based on the status of the header template checkbox you can update the other status in the item template checkbox.

C#

protected void cbxHdrPresent_OnCheckedChanged(object sender, EventArgs e)
    {
        int chkCount = 0;
        CheckBox chkHead = (CheckBox)gvBrowse.HeaderRow.FindControl("cbxHdrPresent");
        if (chkHead.Checked)
        {
            for (int i = 0; i < gvBrowse.Rows.Count; i++)
            {
                CheckBox chk = (CheckBox)gvBrowse.Rows[i].FindControl("cbxItmPresent");
                chk.Checked = true;
                chkCount++;
            }
        }
        else
        {
            for (int i = 0; i < gvBrowse.Rows.Count; i++)
            {
                CheckBox chk = (CheckBox)gvBrowse.Rows[i].FindControl("cbxItmPresent");
                chk.Checked = false;
            }
        }

        if (chkCount > 0)
        {

        }
        else
        {

        }
    }

CheckBox in Gridview Header

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