Solved

VB Sql

Posted on 2014-09-04
6
129 Views
Last Modified: 2014-09-10
Hi
Hope this is enough information

VB.net
SQL Server 2008

Code -
parameters = new DataParameterCollection
paramerers.add("@test", cStr(Values(2)))

Produces an DBNull to string not valid error
How do I test cStr(Values(2) is Null set the Parameter to ""
or if not Null paramerers.add("@test", cStr(Values(2)))

Thanks
0
Comment
Question by:Kevinfeening
  • 2
  • 2
6 Comments
 
LVL 5

Expert Comment

by:NARANTHIRAN
ID: 40305227
Check whether @test returns the value.

Your trying to convert the null value into string that's why it returns  "DBNull to string not valid" error..
0
 

Author Comment

by:Kevinfeening
ID: 40305434
Thanks
as I asked how do I as you commented
Check whether @test returns the value
0
 
LVL 83

Expert Comment

by:CodeCruiser
ID: 40311745
Change

paramerers.add("@test", cStr(Values(2)))

to

If Not String.IsNullOrEmpty(Values(2)) AND Not ISDBNull(Values(2)) Then
    paramerers.add("@test", cStr(Values(2)))
Else
    paramerers.add("@test", "")
End If
0
 

Author Comment

by:Kevinfeening
ID: 40313263
Thanks but it causes errors

On the If Not String.IsNullOrEmpty(Values(2))  Error -
Option strict on disallows implicit conversion from object to string

and Name isdbNull is not declared

Had to Change  Value(2) to cstr(Value(2)) in the first line to remove object to string error and remove the ISDBNull but didn't work

Thanks
0
 
LVL 83

Accepted Solution

by:
CodeCruiser earned 500 total points
ID: 40314065
Ok. Try changing

If Not String.IsNullOrEmpty(Values(2)) AND Not ISDBNull(Values(2)) Then

to

If Not Convert.ISDBNull(Values(2)) Then
0

Featured Post

Zoho SalesIQ

Hassle-free live chat software re-imagined for business growth. 2 users, always free.

Question has a verified solution.

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

There have been several questions about Large Transaction Log Files in SQL Server 2008, and how to get rid of them when disk space has become critical. This article will explain how to disable full recovery and implement simple recovery that carries…
Use this article to create a batch file to backup a Microsoft SQL Server database to a Windows folder.  The folder can be on the local hard drive or on a network share.  This batch file will query the SQL server to get the current date & time and wi…
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.

943 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

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now