C # Dynamic Call WebService (GO)

Today's project needs to use the webservice, just try. It is possible to add the result in the reference, but now our WebService is not written yet, so we want to invoke webservice dynamically. So looked for a lot of information, also in the online search, found a good way, so reproduced over.

Using System;
Using System.Web.Services.Description;
Using System.IO;
Using System.Net;
Using System.Text;
Using System.CodeDom;
Using System.CodeDom.Compiler;
Using Microsoft.csharp;

Namespace Webservciestest
{
Class Webservicehelper
{
Private Webservicehelper ()
{
}
Dynamically invoking Web Services
public static object Invokewebservice (string URL, String methodname, object[] args)
{
Return webservicehelper.invokewebservice (URL, null, methodname, args);
}

public static object Invokewebservice (string url, string classname, String methodname, object[] args)
{
String @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
if ((classname = = null) | | (ClassName = = ""))
{
classname = webservicehelper.getwsclassname (URL);
}

Try
{
Get WSDL
WebClient WC = new WebClient ();
Stream stream = WC. OpenRead (URL + "?) WSDL ");
ServiceDescription sd = Servicedescription.read (stream);
ServiceDescriptionImporter SDI = new ServiceDescriptionImporter ();
Sdi. Addservicedescription (SD, "", "");
CodeNamespace cn = new CodeNamespace (@namespace);

Generate the client proxy class code
CodeCompileUnit CCU = new CodeCompileUnit ();
Ccu. Namespaces.add (CN);
Sdi. Import (CN, CCU);
CSharpCodeProvider csc = new CSharpCodeProvider ();
ICodeCompiler ICC = csc. CreateCompiler ();

Setting compilation parameters
CompilerParameters cplist = new 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");

Compiling proxy classes
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 ());
}

Build the proxy instance and call the method
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));
}
}
private static string Getwsclassname (String wsurl)
{
string[] parts = wsurl.split ('/');
string[] pps = parts[parts. LENGTH-1]. Split ('. ');
return pps[0];
}
}
}

Invoke Example

private void Button1_Click (object sender, EventArgs e)
{
string[] args1 = new String[1];
Args1[0] = this.textbox1.text;//Get IP address

Object obj = Webservicehelper.invokewebservice ("http://www.webxml.com.cn/WebServices/ Ipaddresssearchwebservice.asmx "," Getcountrycitybyip ", ARGS1);
Display IP corresponding region information
This.textBox2.Text = ((string[]) (obj)) [1];
}

C # Dynamic Call WebService (GO)