/// <summary>/// 輸出/// </summary>/// <param name="SQL"></param>public SqlDataReader Output(string SQL){SqlConnection conn = ConnOpen();//數(shù)據(jù)庫連接！SqlDataReader ds;try{conn.Open();SqlCommand cmd = new SqlCommand(SQL, conn);ds = cmd.ExecuteReader(CommandBehavior.CloseConnection);}catch (Exception e){throw e;}return ds;}/********/conn.Close();無法斷開連接。
3 回答
牧羊人nacy
TA貢獻1862條經(jīng)驗 獲得超7個贊
直接在
try{
............
}
catch{
}
finally{
conn.Close();
}
關(guān)閉
或者 用using自動打開，關(guān)閉連接
using (SqlConnection conn = ConnOpen())
{
//要寫的代碼
}
慕標5832272
TA貢獻1966條經(jīng)驗 獲得超4個贊
conn.Open();
SqlCommand cmd = new SqlCommand(SQL, conn);
ds = cmd.ExecuteReader(CommandBehavior.CloseConnection);
放這個位置
conn.Close（）;
BIG陽
TA貢獻1859條經(jīng)驗 獲得超6個贊
/// <summary>
/// 輸出
/// </summary>
/// <param name="SQL"></param>
public SqlDataReader Output(string SQL)
{
SqlConnection conn = ConnOpen();//數(shù)據(jù)庫連接！
SqlDataReader ds;
try
{
conn.Open();
SqlCommand cmd = new SqlCommand(SQL, conn);
ds = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch (Exception e)
{
throw e;
}
return ds;
conn.Close();//位置放錯了
}
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