将当前事务传递给 DbCommand
Pass current transaction to DbCommand
我正在使用 ASP.NET Core 2.1 和 EF Core 2.1 开发一个项目。虽然大多数查询和命令使用EF,但有些单位需要直接调用存储过程。
我不能使用FromSql
,因为它需要基于实体模型的结果集。
假设我们有这些方法:
public Task CommandOne(DbContext context)
{
Entity entity = new Entity
{
Name = "Name"
};
context.DbSet<Entity>().Add(entity);
return context.SaveChangesAsync();
}
public async Task CommandTwo(DbContext context)
{
DbCommand command = context.Database.GetDbConnection().CreateCommand();
command.CommandText = "storedProcName";
command.CommandType = System.Data.CommandType.StoredProcedure;
using (var reader = await command.ExecuteReaderAsync().ConfigureAwait(false))
{
// read result sets
}
}
如果我像这样在一个事务中调用这两个命令:
public async Task UnitOfWork(DbContext dbContext)
{
using (var transaction = await dbContext.Database.BeginTransactionAsync())
{
await CommandOne(dbContext);
await CommandTwo(dbContext);
}
}
发生此异常:
BeginExecuteReader requires the command to have a transaction when the
connection assigned to the command is in a pending local transaction.
The Transaction property of the command has not been initialized.
不得不说,这可不像command.Transaction = ...
那么简单。这需要 DbTransaction
,这与 EF 使用的事务不同。
我坚持了一个月!
有什么解决方法吗?
非常感谢。
I have to mention, it's not as simple as command.Transaction = ....
This requires DbTransaction
which differs from the transaction EF uses.
原来如此。您只需要引用 Microsoft.EntityFrameworkCore.Relational 程序集并添加
using Microsoft.EntityFrameworkCore.Storage;
访问 GetDbTransaction
扩展方法:
command.Transaction = context.Database.CurrentTransaction?.GetDbTransaction();
我正在使用 ASP.NET Core 2.1 和 EF Core 2.1 开发一个项目。虽然大多数查询和命令使用EF,但有些单位需要直接调用存储过程。
我不能使用FromSql
,因为它需要基于实体模型的结果集。
假设我们有这些方法:
public Task CommandOne(DbContext context)
{
Entity entity = new Entity
{
Name = "Name"
};
context.DbSet<Entity>().Add(entity);
return context.SaveChangesAsync();
}
public async Task CommandTwo(DbContext context)
{
DbCommand command = context.Database.GetDbConnection().CreateCommand();
command.CommandText = "storedProcName";
command.CommandType = System.Data.CommandType.StoredProcedure;
using (var reader = await command.ExecuteReaderAsync().ConfigureAwait(false))
{
// read result sets
}
}
如果我像这样在一个事务中调用这两个命令:
public async Task UnitOfWork(DbContext dbContext)
{
using (var transaction = await dbContext.Database.BeginTransactionAsync())
{
await CommandOne(dbContext);
await CommandTwo(dbContext);
}
}
发生此异常:
BeginExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction. The Transaction property of the command has not been initialized.
不得不说,这可不像command.Transaction = ...
那么简单。这需要 DbTransaction
,这与 EF 使用的事务不同。
我坚持了一个月!
有什么解决方法吗?
非常感谢。
I have to mention, it's not as simple as
command.Transaction = ....
This requiresDbTransaction
which differs from the transaction EF uses.
原来如此。您只需要引用 Microsoft.EntityFrameworkCore.Relational 程序集并添加
using Microsoft.EntityFrameworkCore.Storage;
访问 GetDbTransaction
扩展方法:
command.Transaction = context.Database.CurrentTransaction?.GetDbTransaction();