Accessing checkbox in a gridview

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hi, i have a gridview in which i am using checkbox in each row. i am trying to access checkbox of each row and trying to find out which checkboxes have been checked.buut when i try to run the below code.the condition always stands to be false and the inner if condition is never reached by the code.kindly help me.thanks in advance.

C#

protected void btn_3id_Click(object sender, EventArgs e)
        {
            string str = "";
            string srr = "";
            for (int i = 0; i < GridView1.Rows.Count;i++ )
            {
                CheckBox chk = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
                if (chk.Checked==true)
                {
                    if (str == "")
                    {
                        str = GridView1.Rows[i].Cells[0].Text.ToString();
                    }
                    else
                    {
                        srr = str + "," + GridView1.Rows[i].Cells[0].Text.ToString();
                    }
                }
            }
            Session["Card_id"] = str;
            Response.Redirect("ID.aspx");
        }

Posted 19-Mar-13 18:15pm

avinash_thakur86

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_Amy · Answer 1 · 2013-03-19T18:20:00

Solution 1

Loop through GridView Rows. Try this:

C#

protected void btn_3id_Click(object sender, EventArgs e)
{
    string str = "";
    string srr = "";
    foreach (GridViewRow row in GridView1.Rows)
    {
       if (((CheckBox)row.FindControl("CheckBox1")).Checked)
       {
            if (str == "")
            {
                str = row.Cells[0].Text.ToString();
            }
            else
            {
                srr = str + "," + row.Cells[0].Text.ToString();
            }
       }
       Session["Card_id"] = str;
       Response.Redirect("ID.aspx");
    }
}

--Amit

Posted 19-Mar-13 18:20pm

_Amy

Updated 19-Mar-13 19:40pm

v2

Comments

Abhinav S 20-Mar-13 0:25am

Correct. A 5.

_Amy 20-Mar-13 0:26am

Thanks Abhinav. :)

avinash_thakur86 20-Mar-13 1:29am

thank you amit for the solution...i was stupid as i had kept gridview code out of (!Ispostback ) so gridview was being loaded every time the page was posted back...and checkboxes were getting unchecked...now my code is working fine...thanks man!

_Amy 20-Mar-13 1:30am

Welcome. :)