}//////根据条件查询//////存储过程名称/sql语句///存储过程参数/参数///<returns></returns>publicstaticDataTable GetDataTable(stringSqlStr,paramsIDataParameter[] parameters) {#regionConnection(); DataTable dt=newDataTable(); SqlDataAdapter da=newSqlDataAdapter(SqlStr, con);try{ da.SelectCommand.P...
当你插入一个新项时（由数据库上下文触发），你的存储过程将被调用。类似的设置也适用于DELETE和UPDATE...
// 调用存储过程并获取实体列表 public List<YourEntity> GetEntityListFromStoredProcedure() { var entities = new List<YourEntity>(); using (var command = this.Database.GetDbConnection().CreateCommand()) { command.CommandText = "YourStoredProcedureName"; command.CommandType = CommandType.StoredProcedu...
{longuid =4;intdata = context.Database.ExecuteSqlCommand($"exec proc_test {uid}", uid);returndata; } 2,FromSql()可以用来执行带参数的sql,这个函数的用法以及优缺点可以看官方文档的这篇文章 https://docs.microsoft.com/en-us/ef/core/querying/raw-sql 3,用DbCommand 简单的扩展数据框架上下文对象...
CREATE PROCEDURE [dbo].[MyStoredProcedure] AS BEGIN t--存储过程的逻辑 END 2.在EF Core中创建一个新的DbContext 使用EF Core之前,需要在项目中创建一个新的DbContext。可以使用以下命令行工具来创建: dotnet ef dbcontext scaffold 'Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=...
EF核中的EF6映射(EF6 Mapping)是指使用Entity Framework 6(EF6)进行对象关系映射(ORM)时,将数据库中的表结构映射到实体类的属性上的过程。EF6映射是通过配置文件或使用特性注解的方式来定义实体类与数据库表之间的映射关系。 EF6映射的分类包括: 数据注解(Data Annotations):通过在实体类的属性上使用特性注解来...
CREATE PROCEDURE dbo.SchoolBudgetForDateRange 1. @StartDate DATETIME, 1. @EndDate DATETIME, 1. @Sum money output 1. AS 1. SET NOCOUNT ON; 1. SELECT @Sum = SUM(Department.Budget) 1. FROM Department 1. WHERE StartDate BETWEEN @StartDate AND @EndDate ...
[GetDepartmentName]') AND type in (N'P', N'PC')) BEGIN EXEC dbo.sp_executesql @statement = N' CREATE PROCEDURE [dbo].[GetDepartmentName] @ID int, @Name nvarchar(50) OUTPUT AS SELECT @Name = Name FROM Department WHERE DepartmentID = @ID ' END GO -- Insert data into the Person...
The problem is that EF core doesn't map column using their name but by using their position in the column list... So I'm still stuck as I don't have any idea where EF takes this specific order from. So I still have no way to get entities from a procedure, in a multitenant cont...
在上面的示例中,`YourDbContext`是您的EF Core上下文,`YourStoredProcedure`是存储过程的名称,`InputParameterValue`是存储过程的输入参数,`OutputParameterName`是存储过程的输出参数。 请注意,返回的`result`是整数值,这代表了SQL Server存储过程执行的结果。如果存储过程没有返回任何数据,那么`result`将是0。如果存储...