info.CustomSQL ="selectProcessDefinitionsByQueryCriteria";//Mapping SQL returnJson(dao.Select(info));//Do the job! } 结果集转换:任何一个SQL语句可以和任意的实体进行转换, 只是转换失败而已。Mapping首先基于EF定义的Column Attribute,如果没有定义,则默认是属性名。 如果未找到匹配则忽略。 尤其需要注意的是...
1,添加一个类ColumnAttributeTypeMapper,用于字段-属性映射: using Dapper; using System; using System.Collections.Generic; using System.Linq; using System.Reflection; namespace 命名空间 { /// /// Uses the Name value of the <see cref="ColumnAttribute"/> specified to determine /// the associatio...
/// Uses the Name value of the <see cref="ColumnAttribute"/> specified to determine /// the association between the name of the column in the query results and the member to /// which it will be extracted. If no column mapping is present all members are mapped as /// usual. ///...
/// /// Uses the Name value of the <see cref="ColumnAttribute"/> specified to determine/// the association between the name of the column in the query results and the member to/// which it will be extracted. If no column mapping is present all members are mapped as/// usual.///...
查询结果的Mapping 之使用注解维护column -> property 配对 === 如果类的Property 和 SQL 结果字段不完全一致, 需要手工建立 column -> property 的关系, 这里使用了一个 Description Attribute 来保存对应关系. 这一做法优点是, 代码清晰简单, 因为 Attribute 直接放在...
Entity properties should match the column name in the table. By convention, the primary key should be named Id. Using another name is supported through custom mappings. Installation http://nuget.org/List/Packages/Dapper.Extensions.Linq PM> Install-Package Dapper.Extensions.Linq ...
The [Column] attribute can be used from the Dapper namespace, System.ComponentModel.DataAnnotations.Schema, or System.Data.Linq.Mapping - By default the column name will match the property name but it can be overridden with this. You can even use the model property names in the where clause...
The [Column] attribute can be used from the Dapper namespace, System.ComponentModel.DataAnnotations.Schema, or System.Data.Linq.Mapping - By default the column name will match the property name but it can be overridden with this. You can even use the model property names in the where clause...
Dapper是由Stack Overflow背后的团队创建的micro-ORM。Dapper 是 .NET 的简单对象映射器,在速度方面拥有 Micro ORM 之王的称号,几乎与使用原始 ADO.NET 数据读取器一样快。ORM是一个对象关系映射器,负责数据库和编程语言之间的映射。
Pure POCOs through use of ClassMapper (Attribute Free!). Customized entity-table mapping through the use of ClassMapper. Composite Primary Key support. Singular and Pluralized table name support (Singular by default). Easy-to-use Predicate System for more advanced scenarios. Properly escapes table...