what is validation expression for allowing only specialcharacters like !,* etc
what is valiadation expression for not allowing aphabets and numbers
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I've tried this method in my code behind to try and validate that the Fileupload control has a file or not. I get the error message the the event "Server Validate" cannot be found. Can anyone tell why? Thanks.
Public Sub CustomValidator1_ServerValidate(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs) Handles CustomValidator1.ServerValidate
' Get file name Dim uploadAvatar As FileUpload = DirectCast(AdvertisementForm.FindControl("uploadAvatar"), FileUpload) Dim UploadFileName As String = uploadAvatar.PostedFile.FileName If UploadFileName = "" Then ' There is no file selected args.IsValid = False Else Dim Extension As String = UploadFileName.Substring(UploadFileName.L
I need to make validation for Textbox to allow enter integer stated by 9 or 6 or 5 , and also maximum 8 digits , how to do that ?
In VS 2008 there is a very useful feature of background HTML validation - it checks if CSS class name is valid i.e. it exists in one of the linked css files. But VS 2010 Express does not do that any more. And the relevant setting in Options->Text Editor->HTML->Validation->in CSS is not there. Ok, maybe they made it paid for option? VS 2010 Professional? Not there. Or maybe VS 2010 Ultimate? Not a trace.
1. am I blind?
2. they decided it is too convenient to use and removed it?
3. they will "introduce" it in SP1?
What is going on? That one thing made me move back to VS 2008 web developer.
I am validating user from Login.xlsx file. It was working fine by validating email and password from that file. For testing i got new file same contents of file but added some more user names.
So after that when i validating the user i am getting the following error "Data type mismatch in criteria expression".
But when i replaced the new to old one it is working fine. The contens of both files are the same. So why this kind of error happened.
I am using Validation application block in my project and want to set validation message from resource file, but not able to do that. I tried giving the path of resource file in messageTemplateResourceType and name of resource in messageTemplateResourceName. But it did not help as I only receive the message if I have set something in messageTemplate even after setting the resource file.
Here is my code:
<validator lowerBound="1" lowerBoundType="Inclusive" upperBound="250" upperBoundType="Inclusive" negated="false" messageTemplate="" messageTemplateResourceName="PerilTypeAndDetailsSection.VMEnterWhere" messageTemplateResourceType="Asurion.jCare.Common.Resources.UIResources.PerilTypeAndDetailsSection, Asurion.jCare.Common.Resources, Version=18.104.22.168, Culture=neutral, PublicKeyToken=null" tag="" type="Microsoft.Practices.EnterpriseLibrary.Validation.Validators.StringLengthValidator, Microsoft.Practices.Enterpris
I need to validate an XML through XSD. I am using XMLReader (with XmlReaderSettings and
Validation_EventHandler to do it). Depend on users preference, I would like to change the output message generated by Validation_EventHandler in french or english.
Any idea on how to perform this?
Windows Presentation Foundation has a rich data binding system that includes flexible support for business data validation. We take a look at implementing some complex data input validation scenarios that include customized data errors for users.
MSDN Magazine June 2010
Scott Allen shows how to improve your user input validation with new features coming out in ASP.NET MVC 2 that easily allow validation on both the client and server.
MSDN Magazine March 2010
In this month's column, John Papa shows you how the DataForm control works and how it can be customized.ÃÂ He presents in detail a sample application that uses several features to bind, navigate, edit and validate data using the DataForm.
MSDN Magazine October 2009
Edited by Nancy Michell
MSDN Magazine November 2005
I thought I'd use this month's column to describe an interesting app I built using the RegexWrap library described in my article "Wrappers: Use Our ManWrap Library to Get the Best of . NET in Native C++ Code" in this issue.
MSDN Magazine April 2005
In an earlier article the authors showed how to build a custom WebMethods extension that provides XML Schema validation, a function that is lacking in ASP.NET. In the process they established a foundation for enforcing business rules during the deserialization of XML data. The technique, which is described in this article, uses declarative XPath assertions to test business rule compliance.In building this business rules validation engine, the authors integrate the validation descriptions into the WSDL file that is automatically generated by the WebMethod infrastructure. Finally, they demonstrate how to extend wsdl.exe, the tool that generates WebMethod proxy/server code from WSDL files, to make use of their extensions.
Aaron Skonnard and Dan Sullivan
MSDN Magazine August 2003
WebMethods make the development of XML Web Services easier by encapsulating a good deal of functionality, but there is still a lot of underlying XML processing that you have to be responsible for. For example, WebMethods do not validate messages against the implied schema. Because they are not validated, the response that's returned can result in unintended consequences. To address this, the authors extend the WebMethod framework by adding XML Schema validation through a custom SoapExtension class.
MSDN Magazine July 2003
MSDN Magazine March 2003
MSDN Magazine November 2002
If you're planning to build an e-commerce site, you'll be pleased to see that ASP.NET makes it easier than ever. Existing controls can be used and extended to add a great deal more functionality than you might expect. In this article, forms-based authentication is used to verify the identity of users and make certain areas of the site, such as the check-out page, inaccessible to unauthorized users. The power and flexibility of validation controls are demonstrated using the CustomValidator control to connect to a Web Service that verifies addresses. A shopping cart is then implemented in ASP.NET using the DataGrid, and finally, credit card authorization and billing are performed.
Jason Lefebvre and Robert Lair
MSDN Magazine August 2002
Sometimes the extra controls that come with Visual Studio .NET can be a bit inflexible or they just don't provide enough functionality or flexibility for all situations. The ASP.NET form validation controls, while powerful and easy to use, require that the entire page be valid before it's submitted back to the server. Through the use of the new object-oriented features of Visual Basic .NET, it is possible to extend their functionality to overcome this limitation. This article tells you how and helps you decide when it's a good idea to keep validation on the client and when you'd be better off disabling it.
James M. Venglarik II
MSDN Magazine April 2002