Create an xml file and return it from web service in visual basic

Question

Hi I'm a very big begginer to VB and I cannot figure out how to return the result from the XML writer back to the client. I've used the string writer to create the format but I don't know how to RETURN it in a format that doesn't give an error.

Dim str_returnstring As New StringBuilder()
Using string_writer As New StringWriter(str_returnstring)
    Using writer = XmlWriter.Create(string_writer)
        writer.WriteStartDocument(True)
        writer.WriteStartElement("playlists")
        Dim var_arrayposition = 0
        For Each arr_playlistid In arr_playlistids
            writer.WriteStartElement("playlist")
            writer.WriteStartElement("playlistid")
            Dim int2string = Convert.ToString(arr_playlistid)
            writer.WriteString(int2string)
            writer.WriteEndElement()
            writer.WriteStartElement("playlistame")
            writer.WriteString(arr_playlistnames(var_arrayposition))
            writer.WriteEndElement()
            var_arrayposition += 1

            writer.WriteEndElement()
        Next
        writer.WriteEndElement()
        writer.WriteEndDocument()
    End Using

End Using

can you please include the full function and clarify how you're setting up the web service? — tbm0115
– tbm0115, Commented Nov 26, 2015 at 0:15

Adrian · Accepted Answer · 2015-11-26 03:09:25Z

1

If this is a .NET Web Service then returning your XML as a response from one of the WebMethod functions should be as simple as:

<WebMethod()>
Public Function GetXML() As String
    'Your XML Generating Code Here
    Return str_returnstr.ToString()
End Function

Basically, inside your web service you declare a number of methods with the <WebMethod()> attribute attached. Those are the methods your web service exposes to requestors. To return data in a response to a call to one of these methods, just Return the way you normally would from a method call, and the background code will take care of the rest for you.

answered Nov 26, 2015 at 3:09

Adrian

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