any good stuff on threading

[amtrac24]

anyone have any good info / tutorial on asp.net threading?

I found stuff online but all the simple examples are causing errors.

Anyone have any simple examples they have created that they want to share?

[exally]

sorry for my ignorance but are u talking about creating programming threads?

[amtrac24]

i am talking about Imports System.Threading class for .net

every simple example i use causes error. Here is a simple example that results in an error



Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Page.IsPostBack = False Then


Dim A As Thread = New Thread(AddressOf methodA)
A.Start()

Dim i As Int32
For i = 0 To 5000
Response.Write("<br>" & i)
Next


End If
End Sub


Public Sub methodA()
Dim i As Int32


For i = 0 To 1500
Response.Write("<br>" & i)
Next


End Sub

[exally]

yeah thats what i meant, though i have only used fork or CreateThread before, never used threading in .NET... what is the error u get?

[exally]

btw where do u close the handle to the thread?

[jkrohn]

1) Use CODE tags please.
2) What error is this throwing?

btw where do u close the handle to the thread?

While good practice, not necessary as it will get cleaned up on its own.

Jkrohn

[amtrac24]

i think i might just spring for a book on this subject...

it works then doesnt work. The error message i get is the following:

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in Unknown Module.

Additional information: Index and count must refer to a location within the buffer.

the other error message i get is (get one of the 2 error messages each time i run it:

An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in Unknown Module.

Additional information: Count cannot be less than zero.

[jkrohn]

Don't use i in both functions. Use a different variable name. It shouldn't matter but vb.net is completely braindead.

Also put in some error handling and see if you can catch the exception when it happens so you can print some better debug.

I've use threading extensively but only in exe's and only in C#. You couldn't pay me enough to use VB.Net.

Jkrohn

[amtrac24]

i will try that wheni get home. I also get once in a while the following error message.

An unhandled exception of type 'System.Runtime.Serialization.SerializationExcepti on' occurred in Unknown Module.

Additional information: The type System.Web.HttpException in Assembly System.Web, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a is not marked as serializable.


Any idea what might be causing that?