Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Cast from string " " to type 'Double' is not valid...........Trying to convert a string to a boolean value

Posted on 2004-09-08
3
Medium Priority
?
417 Views
Last Modified: 2012-08-14
I am reading a flat text file with a field that has a blank.  I need to covert the string to a boolean value.  

Here is the error message

An unhandled exception of type 'System.InvalidCastException' occurred in microsoft.visualbasic.dll

Additional information: Cast from string " " to type 'Double' is not valid.


Here is the code

Dim tmip As String
tmip = Mid(strLine, 152, 1)

If tmip = 0 Or "" Then
                tmip = False
            Else
                tmip = True
End If

The actual value when you look at the variable is a ""

Any help is greatly appreciated.

Thanks
Kenny



0
Comment
Question by:kwh3856
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 27

Accepted Solution

by:
planocz earned 2000 total points
ID: 12007124
Try this...

Dim tmip As String
if tmip.substring(152, 1).tostring = "" elseor tmip.substring(152, 1).tostring = 0 then
  tmip = false
Else
  tmip = true
End If
0
 

Author Comment

by:kwh3856
ID: 12007248
Thanks for the help.


Kenny
0
 
LVL 27

Expert Comment

by:planocz
ID: 12007313
glad to help, just call any time. :)
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction As chip makers focus on adding processor cores over increasing clock speed, developers need to utilize the features of modern CPUs.  One of the ways we can do this is by implementing parallel algorithms in our software.   One recent…
Microsoft Reports are based on a report definition, which is an XML file that describes data and layout for the report, with a different extension. You can create a client-side report definition language (*.rdlc) file with Visual Studio, and build g…
This tutorial will teach you the special effect of super speed similar to the fictional character Wally West aka "The Flash" After Shake : http://www.videocopilot.net/presets/after_shake/ All lightning effects with instructions : http://www.mediaf…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question