There is already an open DataReader associated with this Command which must be closed first的錯誤解決辦法

執行SqlDataReader.Read之後，如果還想用另一個SqlCommand執行Insert或者Update操作的話，會得到一個錯誤提示：There is already an open DataReader associated with this Command which must be closed first.

解決方法是在ConnectionString中加上一個參數“MultipleActiveResultSets”, 將其值設置爲true。

 

 

SqlConnection conn = new SqlConnection("server=s01;database=MOULTONWEB;uid=sa;pwd=cn1234567890;MultipleActiveResultSets=True