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System.NullReferenceException error

e_arindam Posted: Sat Jan 08, 2005 7:05 pm

Joined: 09 Jan 2006

Posts: 17

System.NullReferenceException error

Hello Friend
In Page_Load i have written
if (Session["Admin"].ToString()=="")
{
Response.Redirect("controlpanel.aspx?Msg=illegal");
}
when Session["Admin"] expired its not getting redirected to the specified url ,
i am getting the following error..why ? How should i write ?

Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current
web request. Please review the stack trace for more information about the error
and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an
instance of an object.

Thanks
Arindam

Thanks & Regards

Arindam
Web Designer & Developer

Yahoo! India Matrimony: Find your life partneronline.

[Non-text portions of this message have been removed]

hemantanugonda Posted: Tue Jan 11, 2005 8:41 am

Joined: 11 Jan 2005

Posts: 2

System.NullReferenceException error

check for if (Session["Admin"] ==null) instead of trying to perform a ToString()
on a null reference.

Arindam <e_arindam@...> wrote:Hello Friend
In Page_Load i have written
if (Session["Admin"].ToString()=="")
{
Response.Redirect("controlpanel.aspx?Msg=illegal");
}
when Session["Admin"] expired its not getting redirected to the specified url ,
i am getting the following error..why ? How should i write ?

Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current
web request. Please review the stack trace for more information about the error
and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an
instance of an object.

Thanks
Arindam

Thanks & Regards

Arindam
Web Designer & Developer

Yahoo! India Matrimony: Find your life partneronline.

[Non-text portions of this message have been removed]

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charlesmarkc... Posted: Tue Jan 11, 2005 8:56 am

Joined: 07 Jan 2006

Posts: 63

System.NullReferenceException error

.GetType.ToString() is your friend for comparison too when chekcing
out objects that may shift type if null or empty

On Mon, 10 Jan 2005 18:41:21 -0800 (PST), Hemant Anugonda
<hemantanugonda@...> wrote:
> check for if (Session["Admin"] ==null) instead of trying to perform a
> ToString() on a null reference.
>
> Arindam <e_arindam@...> wrote:Hello Friend
>
> In Page_Load i have written
> if (Session["Admin"].ToString()=="")
> {
> Response.Redirect("controlpanel.aspx?Msg=illegal");
> }
> when Session["Admin"] expired its not getting redirected to the specified
> url ,
> i am getting the following error..why ? How should i write ?
>
> Object reference not set to an instance of an object.
> Description: An unhandled exception occurred during the execution of the
> current web request. Please review the stack trace for more information
> about the error and where it originated in the code.
> Exception Details: System.NullReferenceException: Object reference not set
> to an instance of an object.
>
>
> Thanks
> Arindam
>
>
>
> Thanks & Regards
>
> Arindam
> Web Designer & Developer
>
>
>
>
> Yahoo! India Matrimony: Find your life partneronline.
>
> [Non-text portions of this message have been removed]
>
>
>
> ---------------------------------
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/AspNetAnyQuestionIsOk/
>
> To unsubscribe from this group, send an email to:
> AspNetAnyQuestionIsOk-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
>
>
>
>
> We don`t know a millionth of one percent about anything -- Edison
>
> Hemant
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
> [Non-text portions of this message have been removed]
>
>
>
> ________________________________
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/AspNetAnyQuestionIsOk/
>
> To unsubscribe from this group, send an email to:
> AspNetAnyQuestionIsOk-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

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