难道我有它得到处理之前关闭()的SQLConnection? [英] Do I have to Close() a SQLConnection before it gets disposed?

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问题描述

按我的其他<一个href=\"http://stackoverflow.com/questions/1033334/is-there-a-list-of-common-object-that-implement-idisposable-for-the-using-stateme\">question在这里对一次性对象,我们应该叫using块年底前关闭()?

 使用(SqlConnection的连接=新的SqlConnection())
使用(的SqlCommand命令=新的SqlCommand())
{
    command.CommandText =INSERT INTO YourMom(金额)VALUES(1);
    command.CommandType = System.Data.CommandType.Text;    connection.Open();
    command.ExecuteNonQuery();    //是必要的这一呼吁?
    connection.close()时;
}


解决方案

既然你有一个使用块时,的SqlCommand的Dispose方法将被调用,它将关闭连接:

  // System.Data.SqlClient.SqlConnection.Dispose拆机
保护覆盖无效的Dispose(BOOL处置)
{
    如果(处置)
    {
        this._userConnectionOptions = NULL;
        this._poolGroup = NULL;
        this.Close();
    }
    this.DisposeMe(处置);
    base.Dispose(处置);
}

Per my other question here about Disposable objects, should we call Close() before the end of a using block?

using (SqlConnection connection = new SqlConnection())
using (SqlCommand command = new SqlCommand())
{
    command.CommandText = "INSERT INTO YourMom (Amount) VALUES (1)";
    command.CommandType = System.Data.CommandType.Text;

    connection.Open();
    command.ExecuteNonQuery();

    // Is this call necessary?
    connection.Close();
}

解决方案

Since you have a using block, the Dispose method of the SQLCommand will be called and it will close the connection:

// System.Data.SqlClient.SqlConnection.Dispose disassemble
protected override void Dispose(bool disposing)
{
    if (disposing)
    {
        this._userConnectionOptions = null;
        this._poolGroup = null;
        this.Close();
    }
    this.DisposeMe(disposing);
    base.Dispose(disposing);
}

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