The application variable in ASP.net(c#).

Question

I have a problem with the application state in Asp.net. I need a list of Strings that i would use in different forms in the same application. Here I add the list:

Application.Add("users", new List<String>());

In a new form I try to add a string to the list, but I get NullReferenceException in the second line of the code below.

 List<String> ls=(List<String>) Application.Get("users");
            ls.Add(TextBox4.Text);

Please add some more code, like where EXACTLY do you add the list to the Application object — Blachshma
– Blachshma, Commented Nov 7, 2012 at 8:36

manas · Accepted Answer · 2012-11-07 10:34:15Z

3

In the first slot of code the string is empty because of {new List<String>()}. You need to add the string in the list. Only after that, call the Application variable in another form to avoid the NullReferenceException Exception.

edited Nov 7, 2012 at 10:34

manas

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answered Nov 7, 2012 at 10:09

Santosh

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1 Comment

Devraj Gadhavi Over a year ago

Correct, need to add { } after the constructor parenthesis.

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