ASP.Net WebForm Validation Summary

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ASP.NET ValidationSummary Control

This validator is used to display list of all validation errors in the web form.

It allows us to summarize the error messages at a single location.

We can set DisplayMode property to display error messages as a list, bullet list or single paragraph.

ValidationSummary Properties

This control has following properties.

Property	Description
AccessKey	It is used to set keyboard shortcut for the control.
BackColor	It is used to set background color of the control.
BorderColor	It is used to set border color of the control.
Font	It is used to set font for the control text.
ForeColor	It is used to set color of the control text.
Text	It is used to set text to be shown for the control.
ToolTip	It displays the text when mouse is over the control.
Visible	To set visibility of control on the form.
Height	It is used to set height of the control.
Width	It is used to set width of the control.
ShowMessageBox	It displays a message box on error in up-level browsers.
ShowSummary	It is used to show summary text on the form page.
ShowValidationErrors	It is used to set whether the validation summary should be shown or not.

Example

The following example explains how to use ValidationSummery control in the application.

// ValidationSummeryDemo.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ValidationSummeryDemo.aspx.cs" 
Inherits="asp.netexample.ValidationSummeryDemo" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<table class="auto-style1">
<tr>
<td class="auto-style2">User Name</td>
<td>
<asp:TextBox ID="username" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="user" runat="server" ControlToValidate="username" 
ErrorMessage="Please enter a user name" ForeColor="Red">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="auto-style2">Password</td>
<td>
<asp:TextBox ID="password" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="pass" runat="server" ControlToValidate="password" 
ErrorMessage="Please enter a password" ForeColor="Red">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="auto-style2">
<br/>
<asp:Button ID="Button1" runat="server"Text="login"/>
</td>
<td>
<asp:ValidationSummary ID="ValidationSummary1" runat="server" ForeColor="Red"/>
<br/>
</td>
</tr>
</table>
</form>
</body>
</html>

Output:

It produces the following output when view in the browser.

It throws error summary when user login without credentials.

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