How to catch this error

[Howard]

A non-integer value is entered as student id
/grades.aspx?stu dentid=1283128s df

Input string was not in a correct format.
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.FormatEx ception: Input string was not in a correct
format.

In aspx file

<asp:ObjectData Source ID="object1" runat="server"
SelectMethod="G etScores" TypeName="Grade Book">
<SelectParamete rs><asp:QuerySt ringParameter Name="studentId "
Type="Int32" QueryStringFiel d="studentid" DefaultValue="0 "
/></SelectParameter s>
</asp:ObjectDataS ource>

The problem is I can't use try catch in the .aspx file. How can I solve this
problem

[Mark Rae]

Re: How to catch this error

"Howard" <howdy0909@yaho o.com> wrote in message
news:evPrKc8gGH A.1244@TK2MSFTN GP04.phx.gbl...

1) Please don't cross-post.

2) Use a validator control

http://www.devhood.com/Tutorials/tutorial_details.aspx?tutorial_id=46

[Paul E Collins]

Re: How to catch this error

Howard wrote:
[color=blue]
> A non-integer value is entered as student id
> /grades.aspx?stu dentid=1283128s df
> Input string was not in a correct format. [...]
> The problem is I can't use try catch in the .aspx file.
> How can I solve this problem[/color]

Well, you could check the string's length and contents (every
character must be a digit), but I don't know if you're saying you
don't have access to the source code at all, or that for some reason
you're just prohibited from doing exception handling.

Eq.

[Ignacio Machin \( .NET/ C# MVP \)]

Re: How to catch this error

Hi,

Do not crosspost, you can get a good answer from any of the NGs as this is a
fairly trivial problem.

You need to validate the input string, you can do it in the client using any
of the Validators classes or in the server and then cancelling the action
and posting back an error.

Why can't you use try/catch in the server?


--
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation


"Howard" <howdy0909@yaho o.com> wrote in message
news:evPrKc8gGH A.1244@TK2MSFTN GP04.phx.gbl...[color=blue]
>A non-integer value is entered as student id
> /grades.aspx?stu dentid=1283128s df
>
> Input string was not in a correct format.
> 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.FormatEx ception: Input string was not in a
> correct format.
>
> In aspx file
>
> <asp:ObjectData Source ID="object1" runat="server"
> SelectMethod="G etScores" TypeName="Grade Book">
> <SelectParamete rs><asp:QuerySt ringParameter Name="studentId "
> Type="Int32" QueryStringFiel d="studentid" DefaultValue="0 "
> /></SelectParameter s>
> </asp:ObjectDataS ource>
>
> The problem is I can't use try catch in the .aspx file. How can I solve
> this problem
>[/color]

[John Fullmer]

Re: How to catch this error

Best bet is using the validators. I don't know why you couldn't do the
exception handling... catch (FormatExceptio n fe) would be a snap.

~ John Fullmer


Howard wrote:[color=blue]
> A non-integer value is entered as student id
> /grades.aspx?stu dentid=1283128s df
>
> Input string was not in a correct format.
> 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.FormatEx ception: Input string was not in a correct
> format.
>
> In aspx file
>
> <asp:ObjectData Source ID="object1" runat="server"
> SelectMethod="G etScores" TypeName="Grade Book">
> <SelectParamete rs><asp:QuerySt ringParameter Name="studentId "
> Type="Int32" QueryStringFiel d="studentid" DefaultValue="0 "
> /></SelectParameter s>
> </asp:ObjectDataS ource>
>
> The problem is I can't use try catch in the .aspx file. How can I solve this
> problem[/color]