[RESOLVED] Try Catch not Working?

I have this code

Code:

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      Try
            Dim myWebRequest As HttpWebRequest = DirectCast(HttpWebRequest.Create(url), HttpWebRequest)
            myWebRequest.Method = "GET"
            myWebRequest.Timeout = (My.Settings.timeout) * 1000

            Dim myWebResponse As HttpWebResponse = DirectCast(myWebRequest.GetResponse(), HttpWebResponse)
            Dim myWebSource As New StreamReader(myWebResponse.GetResponseStream())

            myPageSource = myWebSource.ReadToEnd()
            myWebResponse.Close()
            myWebSource.Close()
            myWebRequest.Abort()

            Return myPageSource

        Catch ex As Exception
            Return ""
        End Try

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If there is an error i would expect it to not throw an error but just return a ""

But when in debug sometimes I get an error thrown at this line:

Code:

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            Dim myWebResponse As HttpWebResponse = DirectCast(myWebRequest.GetResponse(), HttpWebResponse)

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And it shows the dialog box. Is this because its in debug mode. Im quite sure this is not true. So why is it showing the error even the whole code is in a Try Catch loop

It does not matter if you step thu the code via a break point, when the exception is raised the catch part of the try kicks in so this seems wrong that an exception is propagated to the UI instead of the catch.

is it to do with the "directcast" bit?

What's the error? And, dialog box?

Quote:

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Originally Posted by dunfiddlin

What's the error? And, dialog box?

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its ok i sorted it.

debug menu>exceptions>...

I had set all system errors to "THROWN"