Session string error?

[newsgroupie]

Hi Newsgroupies,

Anyone know why this fails In WebForms?

Session.Add("fExample", double.NaN);

double fExample = (double)Session["fExample"];

if(fExample == double.NaN)
{
// The program does not come in here (as expected)

...
}
else
{
// The program comes in here instead (not as expected)

...
}

Anyone suggest any solutions/workarounds?

Thanks in advance,

Newsgroupie, UK

[Paul E Collins]

"newsgroupie" <ne*********@nospam.com> wrote:

double fExample = (double)Session["fExample"];
if(fExample == double.NaN)
{
// The program does not come in here (as expected)

Two NaNs are not equal. You need to use Double.IsNaN.

P.

[newsgroupie]

Thanks Paul!

I'm new to C# ;-)

Newsgroupie, UK

In message <co**********@sparta.btinternet.com>, Paul E Collins
<fi******************@CL4.org> writes

"newsgroupie" <ne*********@nospam.com> wrote:

double fExample = (double)Session["fExample"];
if(fExample == double.NaN)
{
// The program does not come in here (as expected)

Two NaNs are not equal. You need to use Double.IsNaN.

P.