Display Sweet Alert Message after successfully update in ASP.Net using C# and VB.Net

hello ,  

how to add after update like user name has been update

Name: kankon

City: Hawally stat: hawally

Country:Kuwait

my code is  HTML

<script>
    function alertupdate() {
        swal("تم تحديث بيانات الموظف بنجاح", '', "success",);
    }
</script>

Code Behind c#

protected void Button28_Click(object sender, EventArgs e)
{
    if (Uname.Text == String.Empty)
    {
        ClientScript.RegisterStartupScript(this.GetType(), "randomtext", " alertmecheck()", true);
    }
    else
    {
        String constring = ConfigurationManager.ConnectionStrings["cmConnectionString"].ConnectionString;
        SqlConnection sqlcon = new SqlConnection(constring);
        String pname = "update_PC";
        sqlcon.Open();
        SqlCommand com = new SqlCommand(pname, sqlcon);
        com.CommandType = CommandType.StoredProcedure;
 
        com.Parameters.AddWithValue("@name", Uname.Text.ToString());
 
        if (!string.IsNullOrEmpty(ddlCities.Text.Trim()))
        {
            com.Parameters.AddWithValue("@Cities", ddlCities.SelectedItem.Text.ToString());
        }
 
        if (!string.IsNullOrEmpty(ddlCountries.Text.Trim()))
        {
            com.Parameters.AddWithValue("@Countries", ddlCountries.SelectedItem.Text.ToString());
        }
 
        if (!string.IsNullOrEmpty(filenumber.Text.Trim()))
        {
            com.Parameters.AddWithValue("@fileid", Ufileid.Text.ToString());
        }
 
        if (!string.IsNullOrEmpty(civilid.Text.Trim()))
        {
            com.Parameters.AddWithValue("@civilid", Ucivilid.Text.ToString());
        }
 
        if (!string.IsNullOrEmpty(ddlStates.Text.Trim()))
        {
            com.Parameters.AddWithValue("@States", ddlStates.SelectedItem.Text.ToString());
        }
        com.ExecuteNonQuery();
        ClientScript.RegisterStartupScript(this.GetType(), "randomtext", " alertupdate()", true);
        sqlcon.Close();
    }
}