.Net动态调用webservice

C# .Net动态调用webService实现思路及代码

作者：

动态调用web服务将执行以下步骤:获取WSDL/生成客户端代理类代码/设定编译参数/编译代理类/生成代理实例,并调用方法,很详细的，感兴趣的你可不要错过了哈

using System; 

using System.Collections.Generic; 

using System.Linq; 

using System.Web; 

using System.Net; 

using System.IO; 

using System.Web.Services.Description; 

using System.CodeDom; 

using Microsoft.CSharp; 

using System.CodeDom.Compiler; 

using System.Reflection; 

namespace HTTPS 

{ 

public class WSHelper 

{ 

/// < summary> 

/// 动态调用web服务 

/// < /summary> 

/// < param name="url">WSDL服务地址< /param> 

/// < param name="methodname">方法名< /param> 

/// < param name="args">参数< /param> 

/// < returns>< /returns> 

public static object InvokeWebService(string url, string methodname, object[] args) 

{ 

return WSHelper.InvokeWebService(url, null, methodname, args); 

} 

/// < summary> 

/// 动态调用web服务 

/// < /summary> 

/// < param name="url">WSDL服务地址< /param> 

/// < param name="classname">类名< /param> 

/// < param name="methodname">方法名< /param> 

/// < param name="args">参数< /param> 

/// < returns>< /returns> 

public static object InvokeWebService(string url, string classname, string methodname, object[] args) 

{ 

string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling"; 

if ((classname == null) || (classname == "")) 

{ 

classname = WSHelper.GetWsClassName(url); 

} 

try 

{ //获取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); 

//生成客户端代理类代码 

CodeCompileUnit ccu = new CodeCompileUnit(); 

ccu.Namespaces.Add(cn); 

sdi.Import(cn, ccu); 

CSharpCodeProvider icc = new CSharpCodeProvider(); 

//设定编译参数 

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"); 

//编译代理类 

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()); 

} 

//生成代理实例，并调用方法 

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); 

// PropertyInfo propertyInfo = type.GetProperty(propertyname); 

//return propertyInfo.GetValue(obj, null); 

} 

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]; 

} 

} 

} 

调用 

string url = "http://webservice.webxml.com.cn/WebServices/TrainTimeWebService.asmx"; 

string[] args = new string[2]; 

args[0] = "k123"; 

args[1] = ""; 

object result = WSHelper.InvokeWebService(url, "getDetailInfoByTrainCode", args); 

DataSet ds = (DataSet)result; 

this.GridView1.DataSource = ds; 

this.GridView1.DataBind();