ASP.NET連接錯誤

Question

能否請你幫我

Sqlconnection con;//**error**[The type or namespace name 'Sqlconnection' could not be found (are you missing a using directive or an assembly reference?] 

Sqlcommand com;//**error**[The type or namespace name 'Sqlcommand' could not be found (are you missing a using directive or an assembly reference?] 

Answer 1

你缺少資本C - C＃是區分大小寫的：

SqlConnection 
SqlCommand 
^
    | 
    | 

你還需要確保你「已經引用System.Data.DLL幷包含在您using塊的命名空間在類的頂部：

using System.Data.SqlClient;