Manual Validation : RangeValidator « Validation « ASP.NET Tutorial
- ASP.NET Tutorial
- Validation
- RangeValidator
File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ManualValidation" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Manual Validation</title>
</head>
<body>
<form id="form1" runat="server">
<div>
A number (1 to 10):
<asp:TextBox id="txtValidated" runat="server"></asp:TextBox>
<asp:RangeValidator id="RangeValidator"
runat="server"
ErrorMessage="This Number Is Not In The Range"
ControlToValidate="txtValidated"
MaximumValue="10"
MinimumValue="1"
Type="Integer"
EnableClientScript="False"></asp:RangeValidator><br/>
<br />
Not validated:
<asp:TextBox id="txtNotValidated" runat="server"></asp:TextBox><br/>
<br />
<br />
<asp:Button id="cmdOK" runat="server" Text="OK" OnClick="cmdOK_Click" Width="36px"></asp:Button><br />
<br />
<asp:Label id="lblMessage" runat="server" EnableViewState="False"></asp:Label>
</div>
</form>
</body>
</html>
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 ManualValidation : System.Web.UI.Page
{
protected void cmdOK_Click(object sender, EventArgs e)
{
string errorMessage = "<b>Mistakes found:</b><br />";
bool pageIsValid = true;
foreach (BaseValidator ctrl in this.Validators)
{
if (!ctrl.IsValid)
{
pageIsValid = false;
errorMessage += ctrl.ErrorMessage + "<br />";
TextBox ctrlInput = (TextBox)this.FindControl(ctrl.ControlToValidate);
errorMessage += " * Failed: ";
errorMessage += ctrlInput.Text + "<br />";
}
}
if (!pageIsValid) lblMessage.Text = errorMessage;
}
}