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OpenReadCompletedEventArgs Class

Note: This class is new in the .NET Framework version 2.0.

Provides data for the OpenReadCompleted event.

Namespace: System.Net
Assembly: System (in system.dll)

'Declaration
Public Class OpenReadCompletedEventArgs
	Inherits AsyncCompletedEventArgs
'Usage
Dim instance As OpenReadCompletedEventArgs

public class OpenReadCompletedEventArgs extends AsyncCompletedEventArgs
public class OpenReadCompletedEventArgs extends AsyncCompletedEventArgs

Instances of this class are passed to OpenReadCompletedEventHandler methods.

The following code example demonstrates downloading a resource for reading.

Public Shared Sub OpenResourceForReading2(ByVal address As String)

    Dim client As WebClient = New WebClient()
    AddHandler client.OpenReadCompleted, AddressOf OpenReadCallback2
                Dim uri as Uri = New Uri(address)
    client.OpenReadAsync(uri)                        
End Sub


The following method is called when the download completes.

Public Shared Sub OpenReadCallback2(ByVal sender As Object, ByVal e As OpenReadCompletedEventArgs)

    Dim reply As Stream = Nothing
    Dim s As StreamReader = Nothing

    Try

        reply = CType(e.Result, Stream)
        s = New StreamReader(reply)
        Console.WriteLine(s.ReadToEnd())
    Finally

        If Not s Is Nothing Then

            s.Close()
        End If

        If Not reply Is Nothing Then

            reply.Close()
        End If
    End Try
End Sub


System.Object
   System.EventArgs
     System.ComponentModel.AsyncCompletedEventArgs
      System.Net.OpenReadCompletedEventArgs

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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