configurationmanager.connection string giving System.NullReferenceException was unhan

Dear Sir,

I am in great trouble, I have a project on visual studio 2008 and I getting connectionstring using ConfigurationManager.ConnectionStrings("connestionstring").ConnectionString. this project have a app.config file which contain
/code
<connectionStrings>
<add name="RMINVENTORY" connectionString="Server=localhist;Initial Catalog=Northwind;Integrated Security=SSPI" />
</connectionStrings
I get the connection using str variable like this
dim str as string
str=ConfigurationManager.ConnectionStrings("RMINVENTORY").ConnectionString

code/

In visual 2008 it works perfectly, but in 2010 it giving the error like this
"System.NullReferenceException was unhandled
Message=Object reference not set to an instance of an object.
Source=Inventory.Metadata"

Please help where is the problem

Thanking You

Debasis Bag

Because it's not a string. It is a ConnectionString(). Press F1 for HELP! .ToString will convert it, but it won't work.

Where does the code blow up at? The message does not seem to point to the code you have shown so I have no idea where yuour problem may be. Run it in debug mode and see what line is executing when the error is generated.

I would say that the web.config file doesn't contain your connection string (check for spelling errors)

Quote:

---

Originally Posted by Debasis Bag

<add name="RMINVENTORY" connectionString="Server=localhist;Initial Catalog=Northwind;Integrated Security=SSPI" />

---

Should that not be Localhost...