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Accessing vb.net controls using a concatonation of data elements to determine the control name to be called

Posted on 2003-12-02
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Last Modified: 2010-04-17
vb.net Window forms controls
I call out to a database for the name of a control to determine where on the form the control will go. however i cannot convert the name of the control that i get from my sql to a point where the window's form recongnizes which control i'm requesting action on . here is an example of my code.

the sql brings in the tabname and the control name
i string them together  + the "txt" to get the name of the control

dim mystring as string
mystring = "txt" & TabName & ControlName
mystring.text = "I found the control"

i have tried other types besides string to concatenate the sql names and the "txt" but to no avail.

what can i do to dynamically call the name control i want to use.  I don't want to use case statements.
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Question by:btreiber
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6 Comments
 
LVL 22

Expert Comment

by:cookre
ID: 9862073
I wish I were in front of a NET box to test this, but..

foreach (Control x in y)
            {
            if (x.name==WhatImLookingFor)  x.text="FoundIt!";
            }
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Author Comment

by:btreiber
ID: 9863075
thanks cookre, but I can't code this in C  and i don't want to do if  or loop statements because i have over 70 controls i have to handle like this.  any other suggestions.
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LVL 22

Expert Comment

by:cookre
ID: 9863436
I've not done much with VB.NET, so this may be just a pipe dream, but..

If the target controls could be made into a collection, and if VB.NET has associative arrays, then you would set up an associative array subscripted by control name whose entries are indices into the control collection, e.g.,

CtrlArr("Button1")=0
...
CtrlArr("Button73")=72;
...
CtrlCollection(CtrlArr(strButtonName)).Text="Yippee!"

Yeah, I know, lots of ifs.

Let's see what I can dig up.
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LVL 22

Accepted Solution

by:
cookre earned 600 total points
ID: 9863554
Ok, in VB.NET it's not an associative array, it's a hash table, and it looks like you could twist it to your purposes:
http://visualbasic.about.com/library/weekly/aa071203a.htm
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