Click here to Skip to main content
Rate this: bad
good
Please Sign up or sign in to vote.
See more: WPF
I have written a simple wpf application for binding data in datagrid. It throws error while running at following line.
 
string ConString = System.Configuration.ConfigurationManager
.ConnectionStrings["ConString"].ToString();
Exception shows: Exception has been thrown by the target of an invocation."
 
InnerException:{"Object reference not set to an instance of an object."}
Posted 11-Mar-13 0:43am

1 solution

Rate this: bad
good
Please Sign up or sign in to vote.

Solution 1

.ConnectionStrings["ConString"] seems to be null.
When you use ToString() over a null you get this error.
 
Check if you have passed in the right argument and that there are values inside ConnectionStrings.
  Permalink  

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Sergey Alexandrovich Kryukov 575
1 Kornfeld Eliyahu Peter 409
2 Maciej Los 369
3 DamithSL 196
4 OriginalGriff 188
0 OriginalGriff 6,353
1 DamithSL 4,854
2 Maciej Los 4,466
3 Kornfeld Eliyahu Peter 4,058
4 Sergey Alexandrovich Kryukov 3,897


Advertise | Privacy | Mobile
Web03 | 2.8.141220.1 | Last Updated 11 Mar 2013
Copyright © CodeProject, 1999-2014
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100