object reference not set to an instance of object in sequential workflow

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Hi,

I am using sequential workflow 2010. I created a folder named GeneralLeave under library.

When I execute the following my code I got error in line spfolder.

My code is:

C#

 if (workflowProperties.Item["Action"].ToString() == "Separation" && workflowProperties.Item["Effective Date"].ToString()!="")
                {
                    
                    SPFolder myLibrary = SPContext.Current.Web.Folders["GeneralLeave"];
}

Thanks

Manohar

Posted 28-Oct-13 22:16pm

Manohar_manu

Updated 28-Oct-13 22:39pm

Thomas Daniels

v2

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OriginalGriff · Answer 1 · 2013-10-28T22:42:00

We can't tell you exactly why you get the problem - it's likely that the actual fault is elsewhere in your code and is only showing up here.
But basically, what is happening is that one of the elements to the left of a "." is null.
For example:

C#

string s = a.b.c.d.ToString();

if a is null, you will get the error.
if a is a value, but a.b is null, you will get the error.
if a.b is a value, but a.b.c is null...

You get the idea.

Put a breakpoint on the line above the one giving the error and use the mouse to hover over each part in turn - find which one is null and you can start looking for why your code has let it be null.

Sorry, but it's over to you and the debugger, I'm afraid.

Pratik Bhuva · Answer 2 · 2013-10-29T03:05:00

Solution 2

Agreed with OriginalGriff[^].

My advice to you is use

C#

Convert.ToString(YourString);

instead of

C#

YourString.ToString();

Here Convert.ToString(YourString) will handle if YourString is NULL and won't throw exception.

Posted 29-Oct-13 3:05am

Pratik Bhuva

Updated 29-Oct-13 3:06am

v2