ASP.NET

1. ASP.NET Introduction 2. Comp of .Net Framework 3.5 3. Sys.Req for VS 2008 4. ASP.NET Envrmnt Setup 5. VS2010 Ultimate Sys.Req 6. Installing VS 2010 7. VS 2012 Sys.Req 8. Installing VS Exp 2012 9. Start the VS 2008 10. Application Life Cycle 11. Page Life Cycle 12. Page Life Cycle Events 13. ASP.NET Example 14. Event Handling 15. Default Events 16. Server Side 17. Request Object 18. Response Object 19. Server Controls 20. Server Controls Properties 21. Server Controls Methods 22. HTML Server Controls 23. Client Side 24. ASP.NET Basic Controls 25. TextBox Control 26. CheckBox Controls 27. RadioButton Controls 28. ListBox Control 29. HyperLink Control 30. Image Control 31. BulletedList Control 32. ASP.NET Directives 33. Implements Directive 34. Master Type Directive 35. Page Directive 36. PreviousPage Type 37. Managing State 38. Control State 39. Cookies 40. Query Strings 41. Server-Side State 42. Session State 43. Validation Controls 44. Required FieldValidator 45. Range Validator 46. Compare Validator 47. RegularExpressionValidator 48. Custom Validator 49. Validation Summary 50. Data Source Control 51. AdRotator Control 52. Calendar Control 53. Calendar Control Example 54. Panel Control 55. Panel Control Example 56. Multi Views Control 57. MultiView & View controls 58. MultiView Control Example 59. FileUpload Control 60. FileUpload Control Eg 61. AJAX Control 62. UpdatePanel control 63. UpdateProgress Control 64. Custom Controls 65. Custom Control Eg 66. Personalization 67. Create Simple Profile 68. ADO.NET 69. ADO.NET Objects 70. DataTable 71. DataRow 72. DataColumn 73. Object Example 74. Error Handling 75. Tracing Errors 76. Debugger 77. Security 78. Authentication 79. Authorization 80. LINQ 81. LINQ Query Operators 82. LINQ Example 83. Caching 84. Data Caching 85. Output Caching 86. Object Caching 87. Web Services 88. Create Web Services Eg 89. Web & Machine.config 90. Settings Schema 91. ASP.NET Deployment 92. XCopy Deployment 93. Web Setup Project 94. ASP Interview Part 1 95. ASP Interview Part 2 96. ASP Interview Part 3 97. ASP Interview Part 4 98. ASP Interview Part 5 99. ASP Interview Part 6
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5. The CustomValidator tutorials

  • The CustomValidator Performs user-defined validation on an input control.

  • You can solve your purpose with ASP.NET validation control. But if you still don't find solution you can create your own custom validator control.

  • The CustomValidator Control can be used on client side and server side. JavaScript is used to do client validation and you can use any .NET language to do server side validation.

  • The following table shows some properties of the CustomValidator.

 

Properties

Description

ControlToValidate

Specify the input control to validate.

Display

Sets the display behavior of the error message in validation control

Text

Sets the text in the validation control when validation fails

ErrorMessage

Sets the text for error message displayed in the ValidationSummary controls when validation fails

ClientValidationFunction

Specify the name of the custom client-side script function used for validation.

ID

This property gets or sets the identifier for the control. This Identifier is used via programming to access the control's Properties. If an identifier does not exist, then you cannot Write handlers for this control.

OnServerValidate

Indicates the name of the event to raise on the server.

RunAt

Specifies that this control runs on the server

  • Example: The below example check the input of Address characters length with use of CustomValidation control.If the characters length address is less than 30, it will display an error messages on the page.

CustomValidatorExmp.aspx.cs Code:

 

 

Following example shows the use of ASP.NET RegularExpressionValidator.

Sam Sir

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

 

public partial class CustomValidatorExmp : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

 

}

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)

{

if (txtaddress.Text.Length>=30)

{

args.IsValid = true;

}

else

{

args.IsValid = false;

}

}

}

 

 

CustomValidatorExmp.aspx Code:

 

Following example shows the use of ASP.NET RegularExpressionValidator.

Sam Sir

 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CustomValidatorExmp.aspx.cs" Inherits="CustomValidatorExmp" %>

 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title>cbtSAM ASP.NET RegularExpression Validator</title>

<style type="text/css">

.style1

{

width: 100%;

}

</style>

</head>

<body>

<form id="form1" runat="server">

<div>

<table class="style1">

<tr>

<td>

&nbsp;</td>

<td>

Custom Validator Example</td>

</tr>

<tr>

<td>

&nbsp;</td>

<td>

&nbsp;</td>

</tr>

<tr>

<td align="right">

Address :<br />

(Enter the address

<br />

more than 30 Characters)</td>

<td>

<asp:TextBox ID="txtaddress" runat="server" TextMode="MultiLine"></asp:TextBox>

<asp:CustomValidator ID="CustomValidator1" runat="server"

ControlToValidate="txtaddress" ErrorMessage="Enter More than 30 Characters" ValidationGroup="vg1" onservervalidate="CustomValidator1_ServerValidate"></asp:CustomValidator>

</td>

</tr>

<tr>

<td>

&nbsp;</td>

<td>

<asp:Button ID="Button1" runat="server" Text="Submit" ValidationGroup="vg1" />

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

Output

 

asp.net custom validator example

After input thetext in the addrees field more than 30 characters.

asp.net custom validator example

 

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