Fixed length strings

[active]

<VBFixedString(50),
System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.Unma
nagedType.ByValTStr, SizeConst:=50)> Public BusinessName As String


txtBusinessName.MaxLength = Len(ludtTmp.BusinessName)



===snip

txtBusinessName is a textbox

Tracking down a problem lead to the above. Maybe it didn't work in VB6 - I'm
not sure.

But now Len returns 0 not 50 as I would like.

I've looked around the doc but can find no way of getting the max length of
the fixed length string

Is it possible??

Cal

 

[Armin Zingler]

<VBFixedString(50),
System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.Unma
nagedType.ByValTStr, SizeConst:=50)> Public BusinessName As String


txtBusinessName.MaxLength = Len(ludtTmp.BusinessName)



===snip

txtBusinessName is a textbox

Tracking down a problem lead to the above. Maybe it didn't work in
VB6 - I'm not sure.

But now Len returns 0 not 50 as I would like.

I've looked around the doc but can find no way of getting the max
length of the fixed length string

Is it possible??

Yes, have a look at the code. It doesn't change at run-time. ;-)

Now, serious, maybe you can use reflection (namespace System.Reflection).
The VBFixedString attribute doesn't make the string's length is always 50.
The attribute is only used whenever you use the FilePut/FileGet procedures.
I don't know if there is a kind of Len function that does what you need. I
haven't found one.

 

[active]

Now, serious, maybe you can use reflection (namespace System.Reflection).
The VBFixedString attribute doesn't make the string's length is always 50.
The attribute is only used whenever you use the FilePut/FileGet procedures.

I knew that. I just don't know anything about using Reflection and the
examples I looked at do not show me how immediately and I don't want to
digress so I made a set of constants that I use. (Run-on sentence??)

I was hoping someone knew an easy way.

Thanks,
Cal

 

[Armin Zingler]

I was hoping someone knew an easy way.

Sorry, not me.