Why doesn't this simple For Next loop work??

[FastPlymouth]

Hey All,

 

I've racked my brain for 2 days trying to figure this one out...

 

I have a button event handler that loops through a repeater comparing textbox values within each row to the corresponding row in a datatable.

 

As far as I can tell all of the code inside my loop is fine, but for some reason the loop would only execute for every other iteration. Puzzled, I stripped the loop down until it was nothing but the following:

Dim i As Integer = 0
Dim debug As String
For i = 0 To 6 Step 1
    debug = debug & "," & i
     i = i + 1
Next
lblError.Text = debug

 

Notice that I even added the "step 1" just to be sure. My output is ",0,2,4,6".

Am I missing something here!??!? I've been coding vb.net for well over a year now - is it possible that I somehow hamfisted a basic construct?

 

Thinking that the problem had something to do with the event handler itself (longshot) I moved the above code into my PageLoad... same thing!!

 

Does anyone have ANY idea what could cause such a ridiculous condition? I have a feeling it's something stupid and easy that I forgot - if this is the case I'll never be able to show my face here again :)

 

Thanks!

K

[Nate Bross]

This line is what is causing the issue.

i = i + 1

 

Try something like this. The For...Next Loop automatically increments your variable for you, defaulting to positive one.

For i as Integer = 0 to 6
   Console.WriteLine(i.ToString())
Next i

 

The above code just has the wrong type of Loop around it.

 

Dim i as Integer = 0
Do While i < 7
   Console.WriteLine(i.ToString())
   i += 1
Loop

Edited February 7, 2006 by Nate Bross

[FastPlymouth]

Nate -

 

You are the man! Thank you.