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vb.net latiency w/Variables byVal

Posted on 2014-03-18
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Last Modified: 2014-04-02
I have an app that I am writing to accept messages, and I parse the messages by passing them to a function.  What I am finding is that when I pass large string variables that not all the variable that is passed is totally populated when I start to process the msg in the function.  

Is this behavior normal ?  I thought the dev environment made sure that that all var's were totally populated before launching the function ?

Thanks
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Question by:sidwelle
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6 Comments
 
LVL 52

Assisted Solution

by:Carl Tawn
Carl Tawn earned 250 total points
ID: 39939162
Can you post the code, and sample inputs, you are using to demonstrate your problem?
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Author Comment

by:sidwelle
ID: 39941278
My app is already about 1000 lines, don't want to try and post it here.  What I am having problems with is that it receives msgs via tcp-ip on a second thread that are about 500 chrs and pass these strings back to the main thread to be processed (via delegate).  What I am noticing is that as the strings are passed from function to function to be processed when they get to the different functions, it appears that the string vars are not totally populated.

Today I was working changing all the string var specification from default ByVal to ByRef to see if that makes a difference.

I will post back tomorrow.
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Accepted Solution

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sidwelle earned 0 total points
ID: 39945003
Changed all the ByVal statements to ByRef, but I think I found the problem where I had the value I wanted passing through two Delegate statements.

Thought it did not matter how many Delegate functions the values had to pass thought, but apparently it does.

Seems to be working now.
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LVL 1

Assisted Solution

by:mastiSoft
mastiSoft earned 250 total points
ID: 39945249
did you check the buffer size?  maybe you have to make it's bigger or send string in smaller packages
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Author Closing Comment

by:sidwelle
ID: 39971714
Problem was definitely multiple Delegate statements.

Things are working correctly now.

Thanks to everyone who took a look.
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