在Winform应用中将vb函数转换为c＃

Question

我正在尝试将以前编写的.net winform应用程序从vb转换为c＃，并且遇到了Web发送功能的麻烦。如何将其转换为C＃？

Public Shared Function Send(p_ipAddress As String, p_action As String, p_page As String, p_body As String, p_filePath As String) As String

        Dim objHttp = CreateObject("MSXML2.ServerXMLHTTP")
        'objHttp.setTimeouts(1000, 1000, 1000, 1000)  '-- Timeout

        objHttp.Open(p_action, sUrl, False)

        If t_fileContent.Length > 0 Then
            objHttp.setRequestHeader("Content-Type", "multipart/form-data; boundary=" & t_multipart_boundary)
        Else
            t_fileContent.Append(p_body)
            objHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
        End If

        objHttp.Send(t_fileContent.ToString())

        If objHttp.Status = 200 Then
            Return objHttp.responseText
        End If

        Return ""

    End Function

HTTP对象是我在转换为c＃时遇到的问题。我不知道是否需要使用http客户端，http Web请求，对于Web通话我还是很陌生。

编辑，我已将代码缩短为我不确定的地方，删除了绒毛。

Answer 1

尝试一下：

public static string Send(string p_ipAddress, string p_action, string p_page, string p_body, string p_filePath)
{
    dynamic objHttp = Microsoft.VisualBasic.Interaction.CreateObject("MSXML2.ServerXMLHTTP");
    // objHttp.setTimeouts(1000, 1000, 1000, 1000)  '-- Timeout

    objHttp.Open(p_action, sUrl, false);

    if (t_fileContent.Length > 0)
        objHttp.setRequestHeader("Content-Type", "multipart/form-data; boundary=" + t_multipart_boundary);
    else
    {
        t_fileContent.Append(p_body);
        objHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    }

    objHttp.Send(t_fileContent.ToString());

    if (objHttp.Status == 200)
        return objHttp.responseText;

    return "";
}

您必须添加对Microsoft.VisualBasic.dll的引用。

但是有适当的.NET类可以处理通过HTTP发送的消息。最好使用它们重写。

Answer 2

您不必使用Microsoft.VisualBasic.dll-有一种“核心” .NET方法可以做到这一点：

public static string Send(string p_ipAddress, string p_action, string p_page, string p_body, string p_filePath)
{
    dynamic objHttp = System.Activator.CreateInstance(System.Type.GetTypeFromProgID("MSXML2.ServerXMLHTTP"));

    objHttp.Open(p_action, sUrl, false);

    if (t_fileContent.Length > 0)
        objHttp.setRequestHeader("Content-Type", "multipart/form-data; boundary=" + t_multipart_boundary);
    else
    {
        t_fileContent.Append(p_body);
        objHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    }

    objHttp.Send(t_fileContent.ToString());

    if (objHttp.Status == 200)
        return objHttp.responseText;

    return "";
}