自动生成C#表实体代码资源-CSDN下载

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在IT行业中，自动生成代码是一项常见且高效的技术实践，它能够极大地提高开发效率，减少重复工作，让开发者更专注于业务逻辑。本话题聚焦于“自动生成C#表实体代码”，这是一个针对数据库表结构自动化生成C#类的过程，常用于ORM（对象关系映射）框架，如Entity Framework、NHibernate等。以下将详细介绍这一过程及其相关的知识点。我们需要理解C#表实体。在数据库驱动的应用程序中，表实体是C#类的实例，它们代表数据库中的表，并且通常与表的字段一一对应。例如，一个名为`Employees`的数据库表可能会有一个对应的`Employee`类，包含`ID`、`Name`、`Position`等属性。这些属性直接映射到数据库表的列，使得在代码中操作对象就像在数据库中操作数据一样简单。自动生成C#表实体代码通常是通过以下步骤完成的： 1. **数据库连接配置**：开发者需要提供数据库服务器的地址、数据库名称、用户名和密码，以建立到数据库的连接。这通常通过ADO.NET或ODBC数据提供者实现。 2. **元数据获取**：连接建立后，系统会查询数据库的元数据，获取所有表的信息，包括表名、字段名、字段类型、主键等。 3. **代码模板生成**：根据元数据，系统使用预定义的模板或者用户自定义的模板来生成C#类。模板可能包含字段声明、构造函数、属性定义、以及可能的扩展方法。 4. **映射关系设置**：在ORM框架中，还需要定义表与类之间的映射关系。这可能通过数据注解或XML配置文件来实现，例如在Entity Framework中使用`[Table]`和`[Column]`属性。 5. **代码生成**：系统将生成的C#代码输出到指定的文件或目录，供开发者在项目中引用。在这个场景中，提供的文件“系统自动生成存储过程.sql”可能包含创建存储过程的SQL语句，这可能与生成C#代码的过程有关。存储过程是预编译的SQL代码集合，可以用于执行复杂的数据操作，例如批量插入、更新或事务处理。在某些情况下，系统也可能支持自动生成与存储过程对应的C#调用方法，使得调用存储过程更加便捷。总结来说，自动生成C#表实体代码是一个自动化工具，它减少了手动编写和维护与数据库交互代码的工作量。通过合理利用这项技术，开发者可以更快地构建和维护数据库驱动的应用，同时保持代码的整洁和一致性。然而，这也需要注意对生成代码的审查和调整，以确保符合特定的业务需求和编码规范。

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系统自动生成存储过程.sql 16KB

SET QUOTED_IDENTIFIER ON GO SET ANSI_NULLS ON GO ALTER PROCEDURE [dbo].[SP_系统自动生成存储过程] AS BEGIN --Get DataBase Name DECLARE @db_name varchar(40) SELECT @db_name=db_name() --Get table list DECLARE _table Cursor FOR SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND TABLE_NAME != 'dtProperties' DECLARE @table_name nvarchar(4000) OPEN _table FETCH NEXT FROM _table INTO @table_name DECLARE @shifouyouzhujian int WHILE @@FETCH_STATUS=0 BEGIN ------------------------------------Judge whether has primarykeys information------------ SELECT @shifouyouzhujian=COUNT(*) FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE CONSTRAINT_NAME IN ( SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE CONSTRAINT_TYPE='PRIMARY KEY' AND TABLE_NAME=@table_name ) -------------------------Get Column List Of the table---------------------------------------------------- DECLARE @columncount int--Save count of the table'column SELECT @columncount=COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = @table_name DECLARE _column CURSOR FOR SELECT INFORMATION_SCHEMA.COLUMNS.COLUMN_NAME, INFORMATION_SCHEMA.COLUMNS.Data_type, INFORMATION_SCHEMA.COLUMNS.CHARACTER_MAXIMUM_LENGTH AS COLUMN_LENGTH, COLUMNPROPERTY(OBJECT_ID(@table_name), INFORMATION_SCHEMA.COLUMNS.COLUMN_NAME, 'IsIdentity') AS IS_IDENTITY FROM INFORMATION_SCHEMA.COLUMNS WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME = @table_name DECLARE @columnname nvarchar(4000) DECLARE @columndatatype nvarchar(4000) DECLARE @columnlength nvarchar(4000) DECLARE @columnisidentity nvarchar(4000) OPEN _column FETCH NEXT FROM _column INTO @columnname,@columndatatype,@columnlength,@columnisidentity --Define procedure scripts characters Declare @Str_Insert nvarchar(4000) Declare @str_Update nvarchar(4000) Declare @str_Delete nvarchar(4000) Declare @str_SelectAll nvarchar(4000) Declare @str_SelectID nvarchar(4000) --Define procedure name DECLARE @procedure_insert VARCHAR(200) DECLARE @procedure_Update VARCHAR(200) DECLARE @procedure_Delete Varchar(200) DECLARE @procedure_SelectAll varchar(200) DECLARE @procedure_Select varchar(200) DECLARE @insertColu nvarchar(4000)--保存INSERT语句要插入的数据列 SET @insertColu='INSERT INTO '+@table_name+'('+CHAR(13)+CHAR(13)+CHAR(13) DECLARE @insertValue nvarchar(4000)--保存INsert语句要插入的数据列的值 SET @insertValue='VALUES ('+CHAR(13)+CHAR(13)+CHAR(13) DECLARE @tiaojianyuju nvarchar(4000)--保存UPDATE语句，Delete语句,以及Select语句等Where子句 SET @tiaojianyuju='WHERE'+CHAR(32)+CHAR(32) DECLARE @updateColu nvarchar(4000)--保存Update语句要修改的数据列 SET @updateColu='UPDATE '+CHAR(32)+@table_name+CHAR(32)+CHAR(32)+'SET'+CHAR(13)+CHAR(13)++CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13) DECLARE @paraters nvarchar(4000)--保存Delete语句和SelectBYid语句的参数信息 --------Determine procedure name----------- SET @procedure_insert='[dbo].['+'SP_'+@table_name+'_INSERT'+']' SET @procedure_Update='[dbo].['+'SP_'+@table_name+'_UPDATE'+']' SET @procedure_Delete='[dbo].['+'SP_'+@table_name+'_DELETE'+']' SET @procedure_SelectAll='[dbo].['+'SP_'+@table_name+'_SELECTALL'+']' SET @procedure_Select='[dbo].['+'SP_'+@table_name+'_SELECTById'+']' --Procedure scripts initialization SET @Str_Insert='GO'+CHAR(13)+CHAR(13)++CHAR(13)+'if exists (select * from dbo.sysobjects where id = object_id(N' SET @Str_Insert=@Str_Insert+CHAR(39)+@procedure_insert+CHAR(39)+')' SET @Str_Insert=@Str_Insert+' and OBJECTPROPERTY'+'(id, N'+CHAR(39)+'IsProcedure'+CHAR(39)+')'+'= 1)'+CHAR(13)+CHAR(13)+CHAR(13)+'BEGIN'+CHAR(13)+CHAR(13)+CHAR(13) SET @Str_Insert=@Str_Insert+'DROP PROCEDURE'+CHAR(32)+CHAR(32)+@procedure_insert+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+'END'+CHAR(13)+CHAR(13)+'GO'+CHAR(13)+CHAR(13) SET @Str_Insert=@Str_Insert+'CREATE PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_insert+CHAR(32)+CHAR(32)+CHAR(13)+'('+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13) SET @str_Update=CHAR(13)+CHAR(13)+CHAR(13)+'if exists (select * from dbo.sysobjects where id = object_id(N' SET @str_Update=@str_Update+CHAR(39)+@procedure_Update+CHAR(39)+')' SET @str_Update=@str_Update+' and OBJECTPROPERTY'+'(id, N'+CHAR(39)+'IsProcedure'+CHAR(39)+')'+'= 1)'+CHAR(13)+CHAR(13)+CHAR(13)+'BEGIN'+CHAR(13)+CHAR(13)+CHAR(13) SET @str_Update=@str_Update+'DROP PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_Update+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+'END'+CHAR(13)+CHAR(13)+'GO'+CHAR(13)+CHAR(13) SET @str_Update=@str_Update+'CREATE PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_Update+CHAR(32)+CHAR(32)+CHAR(13)+'('+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13) SET @str_Delete=CHAR(13)+CHAR(13)++CHAR(13)+'if exists (select * from dbo.sysobjects where id = object_id(N' SET @str_Delete=@str_Delete+CHAR(39)+@procedure_Delete+CHAR(39)+')'+CHAR(13) SET @str_Delete=@str_Delete+' and OBJECTPROPERTY'+'(id, N'+CHAR(39)+'IsProcedure'+CHAR(39)+')'+'= 1)'+CHAR(13)+CHAR(13)+CHAR(13)+'BEGIN'+CHAR(13)+CHAR(13)+CHAR(13) SET @str_Delete=@str_Delete+'DROP PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_Delete+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+'END'+CHAR(13)+CHAR(13)+'GO'+CHAR(13)+CHAR(13) SET @str_Delete=@str_Delete+'CREATE PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_Delete+CHAR(32)+CHAR(32)+'('+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13) SET @str_SelectAll=CHAR(13)+CHAR(13)++CHAR(13)+'if exists (select * from dbo.sysobjects where id = object_id(N' SET @str_SelectAll=@str_SelectAll+CHAR(39)+@procedure_SelectAll+CHAR(39)+')'+CHAR(13) SET @str_SelectAll=@str_SelectAll+' and OBJECTPROPERTY'+'(id, N'+CHAR(39)+'IsProcedure'+CHAR(39)+')'+'= 1)'+CHAR(13)+CHAR(13)+CHAR(13)+'BEGIN'+CHAR(13)+CHAR(13)+CHAR(13) SET @str_SelectAll=@str_SelectAll+'DROP PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_SelectAll+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+'END'+CHAR(13)+CHAR(13)+'GO'+CHAR(13)+CHAR(13) SET @str_SelectAll=@str_SelectAll+'CREATE PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_SelectAll+CHAR(32)+CHAR(32)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13) SET @str_SelectID=CHAR(13)+CHAR(13)++CHAR(13)+'if exists (select * from dbo.sysobjects where id = object_id(N' SET @str_SelectID=@str_SelectID+CHAR(39)+@procedure_Select+CHAR(39)+')'+CHAR(13) SET @str_SelectID=@str_SelectID+' and OBJECTPROPERTY'+'(id, N'+CHAR(39)+'IsProcedure'+CHAR(39)+')'+'= 1)'+CHAR(13)+CHAR(13)+CHAR(13)+'BEGIN'+CHAR(13)+CHAR(13)+CHAR(13) SET @str_SelectID=@str_SelectID+'DROP PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_Select+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+'END'+CHAR(13)+CHAR(13)+'GO'+CHAR(13)+CHAR(13) SET @str_SelectID=@str_SelectID+'CREATE PROCEDURE '+CHAR(32)+CHAR(32)+@procedure_Select+CHAR(32)+CHAR(32)+'('+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13)+CHAR(13) DECLARE @index_column int SET @index_column=1 WHILE @@FETCH_STATUS=0 BEGIN -----------------Generate Insert Procedure scripts IF @columnisidentity<>1----Identity Column not execute insert BEGIN IF

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