?
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
?
420 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
  • 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

Learn to develop an Android App

Want to increase your earning potential in 2018? Pad your resume with app building experience. Learn how with this hands-on course.

Question has a verified solution.

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

Since .Net 2.0, Visual Basic has made it easy to create a splash screen and set it via the "Splash Screen" drop down in the Project Properties.  A splash screen set in this manner is automatically created, displayed and closed by the framework itsel…
Parsing a CSV file is a task that we are confronted with regularly, and although there are a vast number of means to do this, as a newbie, the field can be confusing and the tools can seem complex. A simple solution to parsing a customized CSV fi…
In this video I will demonstrate how to set up Nine, which I now consider the best alternative email app to Touchdown.
Free Data Recovery software is an advanced solution from Kernel Tools to recover data and files such as documents, emails, database, media and pictures, etc. It supports recovery from physical & logical drive after a hard disk crash, accidental/inte…
Suggested Courses

599 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