如何使用CodeDom创建一个接口方法 [英] how to create an interface method with CodeDom

问题描述

我正在使用CodeDom生成我的WCF服务接口和实现文件。我在CodeMemberMethod上找不到任何可以生成接口方法的选项。如果我使用MemberAttributes.Abstract，我几乎就在那里，但它包含对接口无效的abstract关键字。有谁知道生成方法的正确语法？

I am using CodeDom to generate my WCF service interfaces and implementation files. I cannot find any options on CodeMemberMethod that will allow me to generate an interface method. If I use MemberAttributes.Abstract I am almost there but it includes the abstract keyword which is invalid for an interface. Does anyone know the correct syntax to generate the method?

这是我为生成接口文件而开发的代码：
private void CreateServiceContractFile（Type entity， BoElement bo，DirectoryInfo serviceOutputDir，AppParameters appPrams）
{
CodeCompileUnit serviceFileUnit = new CodeCompileUnit（）;

Here is the code I have developed to generate the interface file: private void CreateServiceContractFile(Type entity, BoElement bo, DirectoryInfo serviceOutputDir, AppParameters appPrams) { CodeCompileUnit serviceFileUnit = new CodeCompileUnit();

        CodeNamespace importNameSpace = new CodeNamespace("");
        importNameSpace.Imports.Add(new CodeNamespaceImport("System"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.Collections.Generic"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.Linq"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.Runtime.Serialization"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.ServiceModel"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.ServiceModel.Web"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.Text"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("ALVIN.BusinessObjects"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("DAOObjects = ALVIN.DAO"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("ALIAS.BusinessObjects"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.Data.Entity.Validation"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.ComponentModel.DataAnnotations"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("System.Data.Objects"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("ALIAS.Common.Utility"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("ALIAS.EventMessages"));
        importNameSpace.Imports.Add(new CodeNamespaceImport("ALIAS.ServiceCommon"));


        importNameSpace.Imports.Add(new CodeNamespaceImport(appPrams.BoNameSpace));

        serviceFileUnit.Namespaces.Add(importNameSpace);

        string serviceName = string.Format("{0}Service", entity.Name);

        CodeTypeDeclaration serviceClass = new CodeTypeDeclaration(serviceName);
        serviceClass.IsClass = true;
        serviceClass.BaseTypes.Add(new CodeTypeReference("I" + serviceName));
        serviceClass.TypeAttributes = TypeAttributes.Public;
        serviceClass.Comments.AddRange(Helper.CreateComment("The Service Contract class"));

        CodeParameterDeclarationExpression headerParm = new CodeParameterDeclarationExpression(
            typeof(ALIASTransactionHeader), "header");

        CodeParameterDeclarationExpression requestParm = new CodeParameterDeclarationExpression(
            bo.BoName, "requestBO");

        CodeMemberMethod enterMethod = new CodeMemberMethod();

        MethodCommentInfo methodComments = new MethodCommentInfo();
        methodComments.CommentSummaryLines.Add(string.Format("Enters a {0} into the system.", bo.BoName));
        methodComments.CommentParameters.Add(new ParameterInfo("header", "Security and Logging information for the web method"));
        methodComments.CommentParameters.Add(new ParameterInfo("requestBO", string.Format("{0} to be entered into the system", bo.BoName)));

        enterMethod.Comments.AddRange(Helper.CreateMethodComment(methodComments));
        enterMethod.Parameters.Add(headerParm);
        enterMethod.Parameters.Add(requestParm);
        enterMethod.PrivateImplementationType = new CodeTypeReference("I" + serviceName);
        //enterMethod.Attributes = MemberAttributes.Public | MemberAttributes.Abstract;
        enterMethod.Name = string.Format("Enter{0}", bo.BoName);


        serviceClass.Members.Add(enterMethod);

        CodeNamespace serviceNameSpace = new CodeNamespace(bo.ServiceNameSpace);

        serviceNameSpace.Types.Add(serviceClass);
        serviceFileUnit.Namespaces.Add(serviceNameSpace);

        Helper.CreateFile(serviceFileUnit, new FileInfo(serviceOutputDir + @"\" + serviceName + @".svc.cs"));
    }

推荐答案

AFAIK，你没有指定接口方法的任何特殊属性。以下示例

AFAIK, you do not have to specify any special attributes for an interface method. The following sample

var compUnit = new CodeCompileUnit();
var ns = new CodeNamespace("TestNamespace");
var iface = new CodeTypeDeclaration("ITest");
iface.IsInterface = true;
var mth = new CodeMemberMethod();
mth.Name = "DoSomething";
mth.ReturnType = new CodeTypeReference(typeof(string));
mth.Parameters.Add(new CodeParameterDeclarationExpression(typeof(int), "x"));
iface.Members.Add(mth);
ns.Types.Add(iface);
compUnit.Namespaces.Add(ns);
var csProv = new CSharpCodeProvider();
using (var tw = File.CreateText(@"test.cs"))
{
    var options = new CodeGeneratorOptions();
    csProv.GenerateCodeFromCompileUnit(compUnit, tw, options);
    tw.Flush();
}

生成以下有效输出：

namespace TestNamespace {


    public interface ITest {

        string DoSomething(int x);
    }
}

这篇关于如何使用CodeDom创建一个接口方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！