protected void btnConnect_Click(object sender, EventArgs e)
 { 
try 
{ 
dbquery.getconnection(txtsname.Text, txtuname.Text, txtpwd.Text);
 pnlDB.Visible = true; 
pnlCN.Visible = true; ddlDB(); 
} 
catch (Exception ex) 
{
 lblex.Visible = true; string p = ex.Message.ToString(); 
Response.Write("<script language='javascript'>alert(" + p + ")</script>");
 lblex.Text = p;
 pnlDB.Visible = false; pnlCN.Visible = true; } 
}
I tried to connect server ..its not correct info it want to show error msg in alert box serverside
How to show the catch error in alertbox in server side