string value empty for each checkbox checked in a gridview

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i have this code where on the click of a button i want to get the Empid of all those checkboxes that are checked in each row. but the string variable str is always empty and doesnt take any value.why is this so? kindly help.

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)
            {
                if (str == "")
                {
                    str = GridView1.Rows[i].Cells[0].Text.ToString();
                }
                else
                {
                    srr = str + "," + GridView1.Rows[i].Cells[1].Text.ToString();
                }
            }
        }
        Session["card_id"] = str;
        Response.Redirect("ID.aspx");
    }
}

.

Posted 19-Mar-13 21:42pm

avinash_thakur86

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_Amy 20-Mar-13 5:23am

Are you using TemplateField or BondField?

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N ManojKumar · Answer 1 · 2013-03-20T00:03:00

Hi Avinash,
I think Cells[0] contains your checkbox and Cells[1] contains your EmpID
The below code will solve your problem.

C#

protected void btn_3id_Click(object sender, EventArgs e)
{
    ArrayList str = new ArrayList();

    foreach (GridViewRow rows in GridView1.Rows)
    {
        CheckBox chk = (CheckBox)GridView1.Rows[rows.RowIndex].FindControl("CheckBox1");
        if (chk.Checked)
        {
            str.Add(GridView1.Rows[rows.RowIndex].Cells[1].Text.ToString());
        }
    }
    Session["card_id"] = str;
    Response.Redirect("ID.aspx");
}

Please let me know if you still facing any issues.
Regards,
Manoj