关于WebService使用中文参数报错的问题，请教高手。
我在某一个项目中写了个WebService方法，在另一个项目中使用这个方法，使用的方式如下：
string PostUrl = "";
string indata = "";
string[] f = { "Verdana", "Serif", "Sans", "Arial" };
CookieContainer myCookieContainer = new CookieContainer();
indata = "UserID=Myname&PWD=123456&Data1=&Data1=李晓&Data3="+f;//传递参数
PostUrl="http://localhost:1747/test/WebService/myService.asmx/Op1";//访问路径
HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(PostUrl);
myHttpWebRequest.CookieContainer = myCookieContainer;
myHttpWebRequest.Accept = "*/*";
myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
myHttpWebRequest.ContentLength = indata.Length;
myHttpWebRequest.Referer = PostUrl;
myHttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)";
myHttpWebRequest.Method = "POST";
myHttpWebRequest.CookieContainer = myCookieContainer;
Stream myRequestStream = myHttpWebRequest.GetRequestStream();
StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("UTF-8"));
myStreamWriter.Write(indata);
myStreamWriter.Close();
myRequestStream.Close();
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
myHttpWebResponse.Cookies = myCookieContainer.GetCookies(myHttpWebRequest.RequestUri);
Stream myResponseStream = myHttpWebResponse.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("UTF-8"));
string outdata = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
Response.Write(outdata);
参数中不包含中文时一切正常，但只有含有中文字符就报如下错：
在写入所有字节之前不能关闭流。
其中我尝试将Encoding.GetEncoding("UTF-8")改为Encoding.GetEncoding("gb2312")，但都不能解决。
急求解决。
[解决办法]
/**/
/// <summary>
/// 根据指定的信息，调用远程WebService方法
/// </summary>
/// <param name="url">WebService的http形式的地址 </param>
/// <param name="namespace">欲调用的WebService的命名空间 </param>
/// <param name="classname">欲调用的WebService的类名（不包括命名空间前缀） </param>
/// <param name="methodname">欲调用的WebService的方法名 </param>
/// <param name="args">参数列表 </param>
/// <returns>WebService的执行结果 </returns>
/// <remarks>
/// 如果调用失败，将会抛出Exception。请调用的时候，适当截获异常。
/// 异常信息可能会发生在两个地方：
/// 1、动态构造WebService的时候，CompileAssembly失败。
/// 2、WebService本身执行失败。
/// </remarks>
/// <example>
/// <code>
/// object obj = InvokeWebservice("http://localhost/GSP_WorkflowWebservice/common.asmx","Genersoft.Platform.Service.Workflow","Common","GetToolType",new object[]{"1"});
/// </code>
/// </example>
public static object InvokeWebservice( string url ,string @namespace,string classname, string methodname,object[] args)
{
try
{
System.Net.WebClient wc = new System.Net.WebClient();
System.IO.Stream stream = wc.OpenRead(url + "?WSDL");
System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream);
System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter();
sdi.AddServiceDescription(sd, "", "");
System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace);
System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();
ccu.Namespaces.Add(cn);
sdi.Import(cn, ccu);
Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler();
System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.CompilerParameters();
cplist.GenerateExecutable = false;
cplist.GenerateInMemory = true;
cplist.ReferencedAssemblies.Add("System.dll");
cplist.ReferencedAssemblies.Add("System.XML.dll");
cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
cplist.ReferencedAssemblies.Add("System.Data.dll");
System.CodeDom.Compiler.CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
if (true == cr.Errors.HasErrors)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
{
sb.Append(ce.ToString());
sb.Append(System.Environment.NewLine);
}
throw new Exception(sb.ToString());
}
System.Reflection.Assembly assembly = cr.CompiledAssembly;
Type t = assembly.GetType(@namespace + "." + classname, true, true);
object obj = Activator.CreateInstance(t);
System.Reflection.MethodInfo mi = t.GetMethod(methodname);
return mi.Invoke(obj, args);
}
catch (Exception ex)
{
throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
}
}
myHttpWebRequest.Method = "POST";
myHttpWebRequest.CookieContainer = myCookieContainer;
Stream myRequestStream = myHttpWebRequest.GetRequestStream();
StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("UTF-8"));
myStreamWriter.Write(indata);
myStreamWriter.Close();
myRequestStream.Close();
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
myHttpWebResponse.Cookies = myCookieContainer.GetCookies(myHttpWebRequest.RequestUri);
Stream myResponseStream = myHttpWebResponse.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("UTF-8"));
string outdata = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
Response.Write(outdata);
