get the text of selected radio button as radio buttons are dynamically generated in placeholder
<p>get the text of selected radio button as radio buttons are dynamically generated in placeholder?</p>

<pre><code> Table tb = (Table)PlPreview.FindControl("tblqsn1");

 int i = 0;

    foreach (TableRow tr in tb.Rows) //here is gives null reference exception

    {

        RadioButton rb = (RadioButton)tr.FindControl("rb_" + i);

        if (rb.Checked == true)

        {

            string s = rb.Text;

        }

        i++;

    }
</code></pre>

<p>Thanks for your help </p>
