using 语句会关闭其中的所有类型的流吗？-解网

问：

我有声明要关闭，然后我正在与读者合作。我想知道我是否必须在最后关闭阅读器，或者我可以依靠语句来关闭它。usingOleDbConnectionusing

我有以下代码：

string connectionString = @"Some connection"; 
using (OleDbConnection connection = new OleDbConnection(connectionString)) 
{ 
    string query = "SELECT ID, Name, \[Position\] FROM Players"; 
    OleDbCommand command = new OleDbCommand(query, connection); 
    connection.Open(); 
    OleDbDataReader reader = command.ExecuteReader(); 

    while (reader.Read()) 
    { 
        Console.WriteLine($"ID.{reader\[0\]} {reader\[1\],-18}{reader\[2\]}"); 
    } 
    reader.Close(); 
}

C# oledbConnection 使用语句

using var connection = new OleDbConnection(@"Some connection");
using var command = new OleDbCommand("SELECT ID, Name, Position FROM Players", connection);
connection.Open();
using OleDbDataReader reader = command.ExecuteReader();
while (reader.Read())
{
    Console.WriteLine($"ID.{reader[0]} {reader[1],-18}{reader[2]}");
}

using 语句会关闭其中的所有类型的流吗？

Does using statement close all kinds of streams in it?

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