Validation ASP.Net Tutorial

  1. Home
  2. ASP.Net Tutorial
  3. Validation
  4. Use ValidationSummary to display message box (C#)
File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ValidationSummary" %>



    Validation Summary


    
    

    A number (1 to 10):
   
                        runat="server" 
                      Type="Integer" 
                      MinimumValue="1" 
                      MaximumValue="10" 
                      ControlToValidate="txtValidated" 
                      Text=""
                        ErrorMessage="The First Number Is Not In The Range">
    
  Not validated:
  
    
    
                runat="server" 
              Text="OK" 
              OnClick="cmdOK_Click" 
              Width="44px">
  
               runat="server" 
             EnableViewState="False">
  
                           runat="server" 
                         ShowMessageBox="True">
    

    


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class ValidationSummary : System.Web.UI.Page
{
  protected void cmdOK_Click(object sender, EventArgs e)
  {
    if (!Page.IsValid) return;
    lblMessage.Text = "cmdOK_Click event handler executed.";
  }
}