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Dapper入门教程(二)——执行非查询语句

时间:2017-08-07 12:02:03      阅读:377      评论:0      收藏:0      [点我收藏+]

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描述

你可以从任意实现IDbConnection的类对象中调用Dapper的扩展方法“Execute”。它能够执行一条命令(Command)一次或者多次,并返回受影响的行数。这个方法通常用来执行:

  • Stored Procedure
  • INSERT statement
  • UPDATE statement
  • DELETE statement

参数

下面表格中显示了Execute方法的不同参数

 

名称描述
sql

要执行的sql语句文本

param

command的参数

transaction

事务

commandTimeout

command超时时间

commandType

command类型

示例:执行存储过程

单次

执行存储过程一次

string sql = "EXEC Invoice_Insert";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql,
        new {Kind = InvoiceKind.WebInvoice, Code = "Single_Insert_1"},
        commandType: CommandType.StoredProcedure);

    My.Result.Show(affectedRows);
}

技术分享

多次

执行存储过程多次,数组中的每条数据都执行一次

string sql = "EXEC Invoice_Insert";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql,
        new[]
        {
            new {Kind = InvoiceKind.WebInvoice, Code = "Many_Insert_1"},
            new {Kind = InvoiceKind.WebInvoice, Code = "Many_Insert_2"},
            new {Kind = InvoiceKind.StoreInvoice, Code = "Many_Insert_3"}
        },
        commandType: CommandType.StoredProcedure
    );

    My.Result.Show(affectedRows);
}

示例:执行插入

单次

执行插入语句一次

 

string sql = "INSERT INTO Invoice (Code) Values (@Code);";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql, new {Kind = InvoiceKind.WebInvoice, Code = "Single_Insert_1"});

    My.Result.Show(affectedRows);
}

多次

执行多次,数组中的每条数据都执行一次

 

string sql = "INSERT INTO Invoice (Code) Values (@Code);";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql,
        new[]
        {
            new {Kind = InvoiceKind.WebInvoice, Code = "Many_Insert_1"},
            new {Kind = InvoiceKind.WebInvoice, Code = "Many_Insert_2"},
            new {Kind = InvoiceKind.StoreInvoice, Code = "Many_Insert_3"}
        }
    );

    My.Result.Show(affectedRows);
}

示例:执行Update

单次

执行Update语句一次

string sql = "UPDATE Invoice SET Code = @Code WHERE InvoiceID = @InvoiceID";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql, new {InvoiceID = 1, Code = "Single_Update_1"});

    My.Result.Show(affectedRows);
}

多次

执行多次,数组中的每条数据都执行一次

string sql = "UPDATE Invoice SET Code = @Code WHERE InvoiceID = @InvoiceID";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql,
        new[]
        {
            new {InvoiceID = 1, Code = "Many_Update_1"},
            new {InvoiceID = 2, Code = "Many_Update_2"},
            new {InvoiceID = 3, Code = "Many_Update_3"}
        });

    My.Result.Show(affectedRows);
}

示例:执行Delete

单次

执行Delete语句一次

string sql = "DELETE FROM Invoice WHERE InvoiceID = @InvoiceID";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql, new {InvoiceID = 1});

    My.Result.Show(affectedRows);
}

多次

执行多次,数组中的每条数据都执行一次

string sql = "DELETE FROM Invoice WHERE InvoiceID = @InvoiceID";

using (var connection = My.ConnectionFactory())
{
    connection.Open();

    var affectedRows = connection.Execute(sql,
        new[]
        {
            new {InvoiceID = 1},
            new {InvoiceID = 2},
            new {InvoiceID = 3}
        });
}

 

 

 

 

 

Dapper入门教程(二)——执行非查询语句

标签:类对象   single   ring   color   red   nec   扩展方法   inverse   font   

原文地址:http://www.cnblogs.com/rocketRobin/p/7297695.html

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