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9.8

.NET fixed length String output to file

Asked by Thrasymachus in Miscellaneous Programming

Tags: fixed, length, string

I am upgrading an application from vb6 to .NET and I am having problems with at Structure that contains (among other things) fixed length strings. The type and it's assigned values look good in the code when I am debugging, but when I try to write it to a file in .NET it seems to be adding a bunch of extra charecters to it. (although I cannot see the pattern) here is part of the code:

Public Structure KIPrecord
        <VBFixedString(8), System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=9)> Public Kipname() As Char
        <VBFixedString(12), System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=13)> Public FileName() As Char
       
..... Several more things here

End Structure

Private Sub KIPJob

     Dim krRecord As New KIPrecord
     Dim iKipFile As Integer = FreeFile()

            FileOpen(iKipFile, sDropDir & "\" & sJobName & "\" & sJobName & ".JOB", OpenMode.Binary)
     With krRecord
                    .Kipname = sJobName '8 char
                    .FileName = Right(sFileName, 12) '12 char
...And the rest of KrRecord here

     End With
      FilePut(iKipFile, krRecord)
End Sub
--------------------------------------

The File I get starts like this
"              HE105-211       ER SHEET.PLT"...
when I want
"HE105-21ER SHEET.PLT"...

Any Idea Why .NET is putting the extra characters in the file? it worked great in vb6
I can post the vb6 code if you think it would help
Thanks for your help
-Thrasymachus
[+][-]05/23/06 08:13 AM, ID: 16743196Accepted Solution

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About this solution

Zone: Miscellaneous Programming
Tags: fixed, length, string
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Solution Provided By: Idle_Mind
Participating Experts: 1
Solution Grade: A
 
[+][-]05/23/06 08:55 AM, ID: 16743604Author Comment

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[+][-]05/23/06 08:57 AM, ID: 16743633Expert Comment

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[+][-]05/23/06 09:12 AM, ID: 16743776Author Comment

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