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ASP.NET Razor Newbie Question

How do I check if a session variable is true?  I keep getting an error saying it cannot convert object to bool.

I've tried something like this:

@if (Session["myVariable"] == true) {
  Do something
}
0
greddin
Asked:
greddin
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1 Solution
 
käµfm³d 👽Commented:
This isn't so much a Razor issue as it is a C# one. You have to ensure that you are comparing the same types when using ==. The things you store in Session are stored as type Object. That means when you want to get them out, and treat them like what they actually are, then you need to cast. Simply add a cast to your logic:

@if ((bool)Session["myVariable"] == true) {
  Do something
}

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greddinAuthor Commented:
Thanks kaufmed:

The syntax you give above compiles without error but gives me this error on the page:

"Object reference not set to an instance of an object"

Any ideas?
0
 
käµfm³d 👽Commented:
Something is null. You'll have to figure out what. If you can post the code, then I can take a gander.
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greddinAuthor Commented:
It looks like this:

@if ((bool)Session["isSuperAdmin"] == true) {
    <li><a href="#">Admin Link</a></li>
}

isSuperAdmin is a bit/boolean field from SQL.  0 or 1
0
 
käµfm³d 👽Commented:
If that's the code that is throwing the error, then are you sure you have something assigned to the session key "isSuperAdmin"? You might try instead:

@if (Session["isSuperAdmin"] != null && (bool)Session["isSuperAdmin"] == true) {

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greddinAuthor Commented:
That worked. I really appreciate your help.
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