Strange Error - WebClient DownloadData

[Dave Starman]

Hello,

I am trying to download web data into my current application. Failing
many attempts I tried to run the sample from the MS Help files with no
luck. If I create a new solution and put the sample code on a button
then it works. However, when do the same on a new form in my existing
solution then I get following error. Could there be some global
settings in my application that are causing problems?

Thanks in advance,

-Dave
Error:
-----------------------------------------------
An unhandled exception of type 'System.Net.WebException' occurred in
system.dll

Additional information: An exception occurred during a WebClient
request.
Sample Code:
-----------------------------------------------
Dim remoteUrl As String = "http://www.msn.com"

' Create a new WebClient instance.
Dim myWebClient As New System.Net.WebClient

' Download the home page data.
Console.WriteLine(("Downloading " + remoteUrl))

' Downloads the Web resource and saves it into a data buffer.

' !!!!!!!!!! THIS LINE CAUSES THE ERROR !!!!!!!!!!!!!!!
Dim myDatabuffer As Byte() = myWebClient.DownloadData(remoteUrl)

' Display the downloaded data.
Dim download As String =
System.Text.Encoding.ASCII.GetString(myDatabuffer)

Console.WriteLine(download)
Console.WriteLine("Download successful.")

[Cor Ligthert]

Dave,

I think that for most of us that is impossible to see without the code that
generates the error.

Cor

"Dave Starman" <da*********@czechbeads.com>

Hello,

I am trying to download web data into my current application. Failing
many attempts I tried to run the sample from the MS Help files with no
luck. If I create a new solution and put the sample code on a button
then it works. However, when do the same on a new form in my existing
solution then I get following error. Could there be some global
settings in my application that are causing problems?

Thanks in advance,

-Dave
Error:
-----------------------------------------------
An unhandled exception of type 'System.Net.WebException' occurred in
system.dll

Additional information: An exception occurred during a WebClient
request.
Sample Code:
-----------------------------------------------
Dim remoteUrl As String = "http://www.msn.com"

' Create a new WebClient instance.
Dim myWebClient As New System.Net.WebClient

' Download the home page data.
Console.WriteLine(("Downloading " + remoteUrl))

' Downloads the Web resource and saves it into a data buffer.

' !!!!!!!!!! THIS LINE CAUSES THE ERROR !!!!!!!!!!!!!!!
Dim myDatabuffer As Byte() = myWebClient.DownloadData(remoteUrl)

' Display the downloaded data.
Dim download As String =
System.Text.Encoding.ASCII.GetString(myDatabuffer)

Console.WriteLine(download)
Console.WriteLine("Download successful.")

[Dave Starman]

Cor,

Please see my original post. The code is under the Sample Code heading.

-Dave

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[Cor Ligthert]

Dave.

Sorry, I had not seen it, however as you told this does work in a single
module, so where do you place it in your application?

Cor

[Dave Starman]

I set up a form in a *new* application with one button and included the
code from my first post. When I click the button it returns the website
code as it should.

Next, I opened my existing (MDI) solution and added the form to the
root. I set the form as the start object (tried calling the form from
the mdi app as well) and ran the application. When I click the button I
receive the error message when the download is attempted.

-Dave

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[Cor Ligthert]

Dave

I tried this
\\\
Private Sub Form1_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
Me.IsMdiContainer = True
Dim frm2 As New Form2
frm2.MdiParent = Me
frm2.Show()
End Sub
///
And in Form2 in the button event the download code,

That works perfect

Cor
"Dave Starman" <da*********@czechbeads.com> schreef in bericht
news:%2****************@TK2MSFTNGP15.phx.gbl...

I set up a form in a *new* application with one button and included the
code from my first post. When I click the button it returns the website
code as it should.

Next, I opened my existing (MDI) solution and added the form to the
root. I set the form as the start object (tried calling the form from
the mdi app as well) and ran the application. When I click the button I
receive the error message when the download is attempted.

-Dave

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[Dave Starman]

After further research I found a setting in the app.config. The
impersonate property was set to true. When I deleted this tag,
everything started to work.

I don't understand why that would cause a problem. Any ideas?

-Dave
------APP.CONFIG FILE causes the errors--------
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<identity impersonate="true" />
</configuration>

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