c# - WebClient.UploadValues 的 UTF32？

Question

我正在使用网络客户端在此处的后请求中上传值:

using (var client = new WebClient())
{

    client.Encoding = Encoding.UTF32;

    var parameters = new NameValueCollection
                         {
                             {"facebookID", IngamableCommunicator.FacebookProfileID + ""},
                             {"name", name},
                             {"content", File.ReadAllText(mapPath)}
                         };

    client.UploadValues(url, parameters);
}

如你所见，我认为这是将请求内容编码更改为UTF32的方法。我对吗？因为显然，它没有按预期工作。

Answer 1

您不能使用非 Ascii 编码的 UploadValues 方法，构建请求的内部方法:

// System.Net.WebClient
private byte[] UploadValuesInternal(NameValueCollection data)
{
    if (this.m_headers == null)
    {
        this.m_headers = new WebHeaderCollection(WebHeaderCollectionType.WebRequest);
    }
    string text = this.m_headers["Content-Type"];
    if (text != null && string.Compare(text, "application/x-www-form-urlencoded", StringComparison.OrdinalIgnoreCase) != 0)
    {
        throw new WebException(SR.GetString("net_webclient_ContentType"));
    }
    this.m_headers["Content-Type"] = "application/x-www-form-urlencoded";
    string value = string.Empty;
    StringBuilder stringBuilder = new StringBuilder();
    string[] allKeys = data.AllKeys;
    for (int i = 0; i < allKeys.Length; i++)
    {
        string text2 = allKeys[i];
        stringBuilder.Append(value);
        stringBuilder.Append(WebClient.UrlEncode(text2));
        stringBuilder.Append("=");
        stringBuilder.Append(WebClient.UrlEncode(data[text2]));
        value = "&";
    }
    byte[] bytes = Encoding.ASCII.GetBytes(stringBuilder.ToString());
    this.m_ContentLength = (long)bytes.Length;
    return bytes;
}

因此，它使用不设置编码的 Encoding.ASCII 或 WebClient.UrlEncode

使用 HttpWebRequest。