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this was the trick:<br />
If Not Request.Cookies(&quot;UserSetti<wbr />ngs&quot;) Is Nothing Then<br />
If Not Request.Cookies(&quot;UserSetti<wbr />ngs&quot;)(&quot;IsA<wbr />dmin&quot;) Is Nothing Then<br />
...<br />
end if<br />
end if
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this was the trick:
If Not Request.Cookies("UserSettings") Is Nothing Then
If Not Request.Cookies("UserSettings")("IsAdmin") Is Nothing Then
...
end if
end if

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<div class="content wysiwyg-content">
if I try to read a cookie (or session variable) that does not exist anymore I get a server error.<br />
below an example of the code<br />
<br />
if Request.Cookies(&quot;name of cookie&quot;) = &quot;xyz&quot; then<br />
//some code<br />
end if<br />
<br />
a check like <br />
- if Request.Cookies(&quot;name of cookie&quot;) = &quot;&quot;<br />
- if Request.Cookies(&quot;name of cookie&quot;).length = 0<br />
gives the same problem<br />
<br />
is there a simple solution? in classic asp this was not an issue
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if I try to read a cookie (or session variable) that does not exist anymore I get a server error.
below an example of the code

if Request.Cookies("name of cookie") = "xyz" then
//some code
end if

a check like 
- if Request.Cookies("name of cookie") = ""
- if Request.Cookies("name of cookie").length = 0
gives the same problem

is there a simple solution? in classic asp this was not an issue

check if cookie exists in vb.net

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.