How solve this IF Then problem?

[Shapper]

Hello,

I need to load a XML file and call a function if it wasn't possible.
I have this:

Sub Build_RSS()

Dim news As New XmlDocument()
If news.Load("http://www.domain.com/news.rss") Then
' Do Actions
Else
Display_Error("File not Found")
End If

End Sub

However the page gets an error when the URL of the file is wrong instead
of displaying my custom error. How can I solve this?

Thanks,
Miguel

[Chris Taylor]

Hi,

If you look at the documentation for then XmlDocument.Load() method you will
notice that it is a Sub and does not return a value. If there are any errors
it will throw an exception. Rather than using an if statement you should
catch the exceptions thrown by the method and deal with the exception
appropriately.

Hope this helps

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
"Shapper" <mdmoura*NOSPAM*@gmail.*DELETE2SEND*com> wrote in message
news:eF**************@tk2msftngp13.phx.gbl...

Hello,

I need to load a XML file and call a function if it wasn't possible.
I have this:

Sub Build_RSS()

Dim news As New XmlDocument()
If news.Load("http://www.domain.com/news.rss") Then
' Do Actions
Else
Display_Error("File not Found")
End If

End Sub

However the page gets an error when the URL of the file is wrong instead
of displaying my custom error. How can I solve this?

Thanks,
Miguel

[Shapper]

Hi,

You were right. I did as follows:
Sub Build_RSS()
Try
news.Load("http://www.domain.com/news.rss")
Catch ex As Exception
Display_Error("File not Found")
End Try
End Sub

It works fine. There is only one problem: I have the code to build the
news system after this. How can I interrupt Build_RSS() after calling
Display_Error?

Thank You,
Miguel

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:ch*************@hotmail.com:

Hi,

If you look at the documentation for then XmlDocument.Load() method you will
notice that it is a Sub and does not return a value. If there are any errors
it will throw an exception. Rather than using an if statement you should
catch the exceptions thrown by the method and deal with the exception
appropriately.

Hope this helps

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
"Shapper" <mdmoura*NOSPAM*@gmail.*DELETE2SEND*com> wrote in message
news:eF**************@tk2msftngp13.phx.gbl...

Hello,

I need to load a XML file and call a function if it wasn't possible.
I have this:

Sub Build_RSS()

Dim news As New XmlDocument()
If news.Load("http://www.domain.com/news.rss") Then
' Do Actions
Else
Display_Error("File not Found")
End If

End Sub

However the page gets an error when the URL of the file is wrong instead
of displaying my custom error. How can I solve this?

Thanks,
Miguel

[Chris Taylor]

Hi,

Sub Build_RSS()
Try
news.Load("http://www.domain.com/news.rss")
' Do the work here ... if the Load thows an exception then this is
skipped
Catch ex As Exception
Display_Error("File not Found")
End Try
End Sub

Note that you should be more specific about the exception, an exception
could be raised for a number
of reasons other than file not being found.

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
"Shapper" <mdmoura*NOSPAM*@gmail.*DELETE2SEND*com> wrote in message
news:uL**************@TK2MSFTNGP10.phx.gbl...

Hi,

You were right. I did as follows:
Sub Build_RSS()
Try
news.Load("http://www.domain.com/news.rss")
Catch ex As Exception
Display_Error("File not Found")
End Try
End Sub

It works fine. There is only one problem: I have the code to build the
news system after this. How can I interrupt Build_RSS() after calling
Display_Error?

Thank You,
Miguel

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:ch*************@hotmail.com:

Hi,

If you look at the documentation for then XmlDocument.Load() method you will notice that it is a Sub and does not return a value. If there are any errors it will throw an exception. Rather than using an if statement you should
catch the exceptions thrown by the method and deal with the exception
appropriately.

Hope this helps

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
"Shapper" <mdmoura*NOSPAM*@gmail.*DELETE2SEND*com> wrote in message
news:eF**************@tk2msftngp13.phx.gbl...

Hello,

I need to load a XML file and call a function if it wasn't possible.
I have this:

Sub Build_RSS()

Dim news As New XmlDocument()
If news.Load("http://www.domain.com/news.rss") Then
' Do Actions
Else
Display_Error("File not Found")
End If

End Sub

However the page gets an error when the URL of the file is wrong instead of displaying my custom error. How can I solve this?

Thanks,
Miguel

[Saeid]

Hello
In your case it is better to use:
Catch ex As FileNotFoundException
Regards

"Chris Taylor" wrote:

Hi,

Sub Build_RSS()
Try
news.Load("http://www.domain.com/news.rss")
' Do the work here ... if the Load thows an exception then this is
skipped
Catch ex As Exception
Display_Error("File not Found")
End Try
End Sub

Note that you should be more specific about the exception, an exception
could be raised for a number
of reasons other than file not being found.

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
"Shapper" <mdmoura*NOSPAM*@gmail.*DELETE2SEND*com> wrote in message
news:uL**************@TK2MSFTNGP10.phx.gbl...

Hi,

You were right. I did as follows:
Sub Build_RSS()
Try
news.Load("http://www.domain.com/news.rss")
Catch ex As Exception
Display_Error("File not Found")
End Try
End Sub

It works fine. There is only one problem: I have the code to build the
news system after this. How can I interrupt Build_RSS() after calling
Display_Error?

Thank You,
Miguel

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:ch*************@hotmail.com:

Hi,

If you look at the documentation for then XmlDocument.Load() method you will notice that it is a Sub and does not return a value. If there are any errors it will throw an exception. Rather than using an if statement you should
catch the exceptions thrown by the method and deal with the exception
appropriately.

Hope this helps

--
Chris Taylor
http://dotnetjunkies.com/weblog/chris.taylor
"Shapper" <mdmoura*NOSPAM*@gmail.*DELETE2SEND*com> wrote in message
news:eF**************@tk2msftngp13.phx.gbl...

> Hello,
>
> I need to load a XML file and call a function if it wasn't possible.
> I have this:
>
> Sub Build_RSS()
>
> Dim news As New XmlDocument()
> If news.Load("http://www.domain.com/news.rss") Then
> ' Do Actions
> Else
> Display_Error("File not Found")
> End If
>
> End Sub
>
> However the page gets an error when the URL of the file is wrong instead > of displaying my custom error. How can I solve this?
>
> Thanks,
> Miguel
>