asp.net

In WebForms, we have the concept of a ValidationGroup to mitigate the issues that come with wrapping the entire page in a single form element. Whether right or wrong in principle, this scheme does a pretty good job of keeping the ASP.NET Validation controls from getting their wires crossed on complex forms.

However, using ASP.NET’s ValidationGroups requires that you use the WebForms validation controls, which generates quite a bit of cruft in your markup and injects two additional script references on your page.

If you’re like me, trying to trend away from client-heavy WebForms pages these side-effects are prohibitive.

Though More >

I can’t imagine a complete website that hasn’t got a function to email someone, either the user when he registers or the administrator when someone contacts him through the website. No doubt, ASP.NET must have a class that can be used to send emails. Actually, there are two: SmtpMail and MailMessage.

In this article, you’ll see how sending email with ASP.NET is possible and then we’ll go deeper to see how you can use HTML emails or include attachments.

But first you’ll need to check if the Microsoft SMTP Service is turned on. To do this either open the Internet Services Manager directly or More >

Download this ASP.NET 2.0.50215 (BETA) C# project (can easily be converted to VB.NET)

Download this ASP.NET 2.0.50727 C# project (can easily be converted to VB.NET)

You probably already know what Ajax does, or maybe not, but what’s certain is that you heard about Ajax because much fuss is created around it on the web.

In this tutorial you’re going to learn a very interesting technique of combining client-side JavaScript with server-side ASP.NET 2.0. More exactly, we’re going to implement a simple rating system (a listbox and a button) which can be used to rate content on websites. But there’s something special about it: when the More >

ou can use DataSets or DataReaders to read the information from the database. A DataReader is about twice as fast as a DataSet (according to Sams Publication). This tutorial uses DataReaders to read the data from a Microsoft Access Database in Visual Studio .Net 2003. ASP.NET web application is used in this tutorial so at the end you will have a web page that derives its data from an Access database.

Following are screen-shots along with some description but I recommend you view the VIDEO TUTORIAL.

STEP-1:

Open up Visual Studio .NET 2003 and click on New Project on the Start page:

STEP-2:

In the New More >

1. Private Sub FetchFile(ByVal strFromPath As System.String, ByVal strSendWithName As System.String)
2. Dim strServerAbsPath As String
3. Dim infFile As System.IO.FileInfo
4. ‘ Change the relative path to the absolute path
5. strServerAbsPath = Me.Server.MapPath(strFromPath)
6. ‘ Will use to check if the file exists
7. infFile = New System.IO.FileInfo(strServerAbsPath)
8. ‘ If it does…
9. If infFile.Exists Then
10. With Me.Response
11. ‘ Send headers
12. .ContentType = “application/octet-stream”
13. .AddHeader(“Content-Disposition”, “attachment; filename=” & strSendWithName)
14. .AddHeader(“Content-Length”, infFile.Length.ToString)
15. ‘ Send the file
16. .WriteFile(infFile.FullName)
17. ‘ Send and end the response
18. .Flush()
19. .End()
20. End With
21. ‘ File does not exist
22. Else
23. ThrowError(“IO Error”, “File Not Found”)
24. End If
25. End Sub