第一种
01 namespace DemoConsoleApplication
02 {03 class Program
04 {
05 //数据库连接字符串、根据实际修改
06 private const string ConnectionString = @"Data Source=|DataDirectory|\Database1.sdf" ;
07
08 static void Main ( string [] args )
09 {
10 //获取用户输入的内容
11 Console . WriteLine ( "请输入用户名" );
12 string Passport = Console . ReadLine ();
13 Console . WriteLine ( "请输入密码" );
14 string Password = Console . ReadLine ();
15
16 using ( SqlConnection Conn = new SqlConnection ( ConnectionString ))
17 {
18 Conn . Open (); //打开数据库
19 using ( SqlCommand Cmd = Conn . CreateCommand ())
20 {
21 Cmd . CommandText = "select * from TB_Users where passport=@UN and password=@PWD" ;
22 Cmd . Parameters . Add ( new SqlParameter ( "UN" , Passport ));
23 Cmd . Parameters . Add ( new SqlParameter ( "PWD" , Password ));
24
25 if ( 1 == Cmd . ExecuteNonQuery ())
26 Console . WriteLine ( "登陆成功！" );
27 else
28 Console . WriteLine ( "登陆失败！" );
29 }
30 }
31
32 Console . ReadKey (); //防止控制台程序一闪而过、而看不到输出结果
33 }
34 }
35 }
第二种
Public Sub InsertAll(TaskName As String, TaskState As String, TaskStartPage As Integer, TaskEndPage As Integer, TaskPage As Integer, TaskUrl As String)
Try
DB.Execute("insert into T_Task (TaskName,TaskState,TaskStartPage,TaskEndPage,TaskPage,TaskUrl) values ('" & TaskName.Replace("'", "''") & "','" & TaskState.Replace("'", "''") & "'," & TaskStartPage & "," & TaskEndPage & "," & TaskPage & ",'" & TaskUrl & "')")
Catch ex As Exception
If ex.Message.Contains("UNIQUE") Then
MsgBox("该任务名已占用")
End If
End Try
End Sub