登陆界面Login

最终界面：

 

XMAL 代码：

  <Grid >

            <Grid.RowDefinitions>

                <RowDefinition />

                <RowDefinition />

            </Grid.RowDefinitions>

            <Image Source="Image\AiMeiLi.jpg"  Margin="5"/>

            <Grid Grid.Row="1">

                <Grid.ColumnDefinitions>

                    <ColumnDefinition  Width="Auto"/>

                    <ColumnDefinition />

                </Grid.ColumnDefinitions>

                <Grid.RowDefinitions >

                    <RowDefinition />

                    <RowDefinition />

                    <RowDefinition />

                </Grid.RowDefinitions>

                <TextBlock Text="用户名" VerticalAlignment="Center" HorizontalAlignment="Right" Margin="2"/>

                <TextBox  Grid.Column="1"  VerticalAlignment="Center" Name="tbxLoginName"  Margin="2"/>

                <TextBlock Text="密码"  Grid.Row="1" VerticalAlignment="Center" HorizontalAlignment="Right" Margin="2"/>

                <PasswordBox   Grid.Column="1" Grid.Row="1"  VerticalAlignment="Center"  Name="tbxLoginPasswords"  Margin="2"  />

                <StackPanel Grid.Row="2" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right"  >

                    <Button Content="登陆" Name="btnLogin" Margin="2" Click="btnLogin_Click" />

                    <Button  Content="取消"  Name="btnCancle" Margin="2" Click="btnCancle_Click" />

                </StackPanel>

            </Grid>

        </Grid>

View Code

 

后台代码：

private void btnLogin_Click(object sender, RoutedEventArgs e)

        {

            using (OleDbConnection conn = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\AiMeiLi.accdb"))

           {

                string sqlText = @"select count(*) from [User] where UserName='" + tbxLoginName.Text + "' and UserPasswords='" + tbxLoginPasswords.Password + "'";

                using (OleDbCommand cmd=new OleDbCommand (sqlText, conn))

                {

                    if (conn.State == System.Data.ConnectionState.Closed)

                    {

                        conn.Open();

                    }

                    int n=System.Convert.ToInt32( cmd.ExecuteScalar());

                    if (n > 0)

                    {

                        MainWindow mainW = new MainWindow();

                        mainW.Show();

                        this.Close();

                    }

                    else

                    {

                        MessageBox.Show("用户名或密码错");

                    }

                }

           }

        }



        private void btnCancle_Click(object sender, RoutedEventArgs e)

        {

            Application.Current.Shutdown();

        }

View Code

 

数据库：access 数据库