CodeDom生成类文件

仅供个人学习

需要先引入System.CodeDom nuget包

 using CodeGenerate.Entities;
 using System;
 using System.CodeDom;
 using System.CodeDom.Compiler;
 using System.Collections.Generic;
 using System.Reflection;
 using System.Text;

 namespace CodeGenerate
 {
     public class GenerateCS
     {
         /// <summary>
         /// 生成的类里面只有字段
         /// </summary>
         /// <param name="namespaceName"></param>
         /// <param name="className"></param>
         /// <param name="classType"></param>
         /// <param name=""></param>
         public static void FieldGenerate(string namespaceName, string className, TypeAttributes classType, string FileName, List<ClassFieldInfo> classInfos)
         {
             CodeCompileUnit unit = new CodeCompileUnit();

             //准备必要的命名空间（这个是指要生成的类的空间）
             CodeNamespace sampleNamespace = new CodeNamespace();

             //导入必要的命名空间
             //sampleNamespace.Imports.Add(new CodeNamespaceImport("System"));

             //设置命名空间的名称
             sampleNamespace.Name = namespaceName;

             //准备要生成的类的定义
             CodeTypeDeclaration Customerclass = new CodeTypeDeclaration(className);

             //指定这是一个Class
             Customerclass.IsClass = true;
             Customerclass.TypeAttributes = classType;
             //Customerclass.Attributes = MemberAttributes.Public | MemberAttributes.Const;

             //把这个类放在这个命名空间下
             sampleNamespace.Types.Add(Customerclass);

             //把该命名空间加入到编译器单元的命名空间集合中
             unit.Namespaces.Add(sampleNamespace);

             //这是输出文件名称
             string outputFile = FileName;

             //添加字段
             foreach (ClassFieldInfo item in classInfos)
             {
                 CodeMemberField field = new CodeMemberField(item.FieldType, item.FiledName);
                 field.Attributes = item.FiledMemberAttributes;
                 field.Comments.Add(new CodeCommentStatement(item.FieldComments));
                 //field.InitExpression = new CodeFieldReferenceExpression(new CodeTypeReferenceExpression("System.Int64"), "12 * 1024 * 1024");
                 field.InitExpression = new CodeFieldReferenceExpression(null, item.FileValue);
                 Customerclass.Members.Add(field);
             }

             //生成代码
             CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
             CodeGeneratorOptions options = new CodeGeneratorOptions();
             options.BracingStyle = "C";
             options.BlankLinesBetweenMembers = true;
             using (System.IO.StreamWriter sw = new System.IO.StreamWriter(outputFile))
             {
                 provider.GenerateCodeFromCompileUnit(unit, sw, options);
             }
         }

         public static void PropertiesGenerate(string namespaceName, string className, TypeAttributes classType, string FileName, List<ClassPropertyInfo> classInfos)
         {
             CodeCompileUnit unit = new CodeCompileUnit();

             //准备必要的命名空间（这个是指要生成的类的空间）
             CodeNamespace sampleNamespace = new CodeNamespace();

             //导入必要的命名空间
             //sampleNamespace.Imports.Add(new CodeNamespaceImport("System"));

             //设置命名空间的名称
             sampleNamespace.Name = namespaceName;

             //准备要生成的类的定义
             CodeTypeDeclaration Customerclass = new CodeTypeDeclaration(className);

             //指定这是一个Class
             Customerclass.IsClass = true;
             Customerclass.TypeAttributes = classType;
             //Customerclass.Attributes = MemberAttributes.Public | MemberAttributes.Const;

             //把这个类放在这个命名空间下
             sampleNamespace.Types.Add(Customerclass);

             //把该命名空间加入到编译器单元的命名空间集合中
             unit.Namespaces.Add(sampleNamespace);

             //这是输出文件名称
             string outputFile = FileName;

             foreach(ClassPropertyInfo item in classInfos)
             {
                 CodeMemberProperty property = new CodeMemberProperty();
                 property.Attributes = item.PropertyMemberAttributes;
                 property.Name = item.PropertyName;
                 property.HasGet = item.IsHaveGet;
                 property.HasSet = item.IsHaveSet;
                 property.Type = new CodeTypeReference(item.PropertyType);
                 property.Comments.Add(new CodeCommentStatement(item.PropertyComments));
                 //property.GetStatements.Add(new CodeMethodReturnStatement(new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), "_Id")));
                 //property.SetStatements.Add(new CodeAssignStatement(new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), "_Id"), new CodePropertySetValueReferenceExpression()));
                 Customerclass.Members.Add(property);
             }

             //生成代码
             CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
             CodeGeneratorOptions options = new CodeGeneratorOptions();
             options.BracingStyle = "C";
             options.BlankLinesBetweenMembers = true;
             using (System.IO.StreamWriter sw = new System.IO.StreamWriter(outputFile))
             {
                 provider.GenerateCodeFromCompileUnit(unit, sw, options);
             }
         }
     }
 }

static void Generate(Dictionary<string, string> dic)
        {
            CodeCompileUnit unit = new CodeCompileUnit();

            //准备必要的命名空间（这个是指要生成的类的空间）
            CodeNamespace sampleNamespace = new CodeNamespace();

            //导入必要的命名空间
            //sampleNamespace.Imports.Add(new CodeNamespaceImport("System"));

            //设置命名空间的名称
            sampleNamespace.Name = "FiiiChain.Consensus";

            //准备要生成的类的定义
            CodeTypeDeclaration Customerclass = new CodeTypeDeclaration("BlockSetting");

            //指定这是一个Class
            Customerclass.IsClass = true;
            Customerclass.TypeAttributes = TypeAttributes.Public;
            //Customerclass.Attributes = MemberAttributes.Public | MemberAttributes.Const;

            //把这个类放在这个命名空间下
            sampleNamespace.Types.Add(Customerclass);

            //把该命名空间加入到编译器单元的命名空间集合中
            unit.Namespaces.Add(sampleNamespace);

            //这是输出文件
            string outputFile = "BlockSetting.cs";

            //添加字段
            foreach (KeyValuePair<string, string> item in dic)
            {
                CodeMemberField field = new CodeMemberField(typeof(long), item.Key);
                field.Attributes = MemberAttributes.Public | MemberAttributes.Const;
                //field.Comments.Add(new CodeCommentStatement("Max block size is 12 MB"));
                //field.InitExpression = new CodeFieldReferenceExpression(new CodeTypeReferenceExpression("System.Int64"), "12 * 1024 * 1024");
                field.InitExpression = new CodeFieldReferenceExpression(null, item.Value);
                Customerclass.Members.Add(field);
            }
            //添加属性

            CodeMemberProperty property = new CodeMemberProperty();
            property.Attributes = MemberAttributes.Public | MemberAttributes.Final;
            property.Name = "Id";
            property.HasGet = true;
            property.HasSet = true;
            property.Type = new CodeTypeReference(typeof(System.String));
            property.Comments.Add(new CodeCommentStatement("这是Id属性"));
            //property.GetStatements.Add(new CodeMethodReturnStatement(new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), "_Id1")));
            //property.SetStatements.Add(new CodeAssignStatement(new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), "_Id2"), new CodePropertySetValueReferenceExpression()));
            Customerclass.Members.Add(property);

            //添加方法（使用CodeMemberMethod)--此处略

            //添加构造器(使用CodeConstructor) --此处略

            //添加程序入口点（使用CodeEntryPointMethod） --此处略

            //添加事件（使用CodeMemberEvent) --此处略

            //添加特征(使用 CodeAttributeDeclaration)
            Customerclass.CustomAttributes.Add(new CodeAttributeDeclaration(new CodeTypeReference(typeof(SerializableAttribute))));

            //生成代码
            CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp");
            CodeGeneratorOptions options = new CodeGeneratorOptions();
            options.BracingStyle = "C";
            options.BlankLinesBetweenMembers = true;
            using (System.IO.StreamWriter sw = new System.IO.StreamWriter(outputFile))
            {
                provider.GenerateCodeFromCompileUnit(unit, sw, options);
            }
        }

参考文章：http://www.cnblogs.com/xszjk/articles/6414099.html