try { string User0; string Passs0; string SerNes; User0 = Users0.Text; //文本框Text的值 赋值给变量User0 Passs0 = Passw0.Text; //文本框Text的值 赋值给变量Passw0 SerNes = SerNe0.Text; //数据库链接字符串 String ConStr = "server="+ SerNes + ";database=;uid="+ User0 + ";pwd="+ Passs0; //创建SqlConnection 对象 需要引用 using System.Data.SqlClient; SqlConnection conn = new SqlConnection(ConStr); //打开数据库 conn.Open(); //判断是否打开 if(conn.State == ConnectionState.Open) { label1.Text = "链接:>>> 成功"; } } catch (Exception ex){ label1.Text = "链接:>>> 失败\n"+ ex; }
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