unique value store in database using store procedture in ASP

protected void btn_insert_Click(object sender, EventArgs e)
{
string CS = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
string path = string.Concat(Server.MapPath("~/UploadFile/" + fu_photo.FileName));
fu_photo.SaveAs(path);
using (SqlConnection con = new SqlConnection(CS))
{
SqlCommand cmd = new SqlCommand("spCreateUser", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("userName", txt_username.Text);
cmd.Parameters.AddWithValue("pass", txt_pass.Text);
cmd.Parameters.AddWithValue("email", txt_email.Text);
cmd.Parameters.AddWithValue("userRole", ddl_role.SelectedValue);
cmd.Parameters.AddWithValue("userPhoto", path);
cmd.Parameters.AddWithValue("userStatus", ddl_status.SelectedValue);
con.Open();
int k = cmd.ExecuteNonQuery();
if (k != 0)
{
lblMsg.Text = "Record Inserted Succesfully into the Database";
lblMsg.ForeColor = System.Drawing.Color.CornflowerBlue;
}
con.Close();
}
}

code not workig properly plz tell me what is missed by me.

Thanks & Regards