是否需要处置SqlConnection和SqlCommand? [英] Is it necessary to dispose SqlConnection as well as SqlCommand?
问题描述
是否有必要分别处理SqlConnection和SqlCommand?
Is it necessary to separately dispose of a SqlConnection as well as a SqlCommand?
我正在对应用程序进行一些维护工作,发现以下代码:
I'm doing some maintenance work on an application and found the following code:
public void CallStoredProc(string storedProcName)
{
using (SqlCommand command = new SqlCommand(storedProcName, CreateConnection()))
{
command.CommandType = CommandType.StoredProcedure;
command.Connection.Open();
// Additional code here.
command.ExecuteNonQuery();
}
}
在正常情况下,此操作将正确清理SqlConnection吗以及是否有错误?还是我们必须将代码更改为以下内容:
Will this clean up the SqlConnection properly, under normal circumstances as well as if there is an error? Or would we have to alter the code to something like:
public void CallStoredProc(string storedProcName)
{
using (SqlConnection connection = CreateConnection())
{
using (SqlCommand command = new SqlCommand(storedProcName, connection))
{
command.CommandType = CommandType.StoredProcedure;
command.Connection.Open();
// Additional code here.
command.ExecuteNonQuery();
}
}
}
推荐答案
是的,您将必须分别处理连接。您还可以在源代码: SqlCommand.Dispose()
不会关闭或释放其使用的连接(顺便说一句,这很不好,因为您无法使用相同的连接)。
Yes, you will have to dispose (of) the connection separately. You can also see this in the source code: SqlCommand.Dispose()
does not close or dispose the connection it uses (by the way, that would be bad anyway as you could not execute multiple commands with the same connection).
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