ASP.NET SQL 连接中的连接错误

本文关键字：连接错误 ASP SQL NET | 更新日期: 2023-09-27 18:33:00

你能帮帮我吗

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?]

您缺少大写C - C# 区分大小写：

SqlConnection
SqlCommand 
   ^
   |
   |

您还需要确保已引用System.Data.DLL并将命名空间包含在类顶部的using块中：

using System.Data.SqlClient;