0
爲什麼WPF中的消息框沒有顯示? 我沒有任何錯誤。 來自XAML文件的名稱是正確的,所以我不知道發生了什麼。爲什麼MessageBox沒有顯示?
請幫幫我吧! 我不知道我應該改變什麼。 感謝您的幫助!
XAML:
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication2"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Label x:Name="label" Content="App" HorizontalAlignment="Left" Margin="214,0,0,0" VerticalAlignment="Top" Height="33" Width="89"/>
<TextBox x:Name="loginBox" HorizontalAlignment="Left" Height="23" Margin="214,54,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
<PasswordBox x:Name="passwordBox" HorizontalAlignment="Left" Margin="214,92,0,0" VerticalAlignment="Top" Width="120"/>
<Label x:Name="log" Content="Login:" HorizontalAlignment="Left" Margin="167,51,0,0" VerticalAlignment="Top"/>
<Label x:Name="pass" Content="Password:" HorizontalAlignment="Left" Margin="146,86,0,0" VerticalAlignment="Top"/>
<Button x:Name="log_in" Content="LOG IN" HorizontalAlignment="Left" Margin="279,117,0,0" VerticalAlignment="Top" Width="75"/>
</Grid>
</Window>
這裏是我的代碼:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace WpfApplication2
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void log_in_Click(object sender, RoutedEventArgs e)
{
string login = loginBox.Text;
string password = passwordBox.Password;
if(check(login, password)){
MessageBox.Show("Welcome!");
}
else
{
MessageBox.Show("Wrong login or password!");
}
}
public bool check(string login, string password)
{
if(login == "admin" && password == "123")
{
return true;
}
else
{
return false;
}
}
}
}
如何調用'log_in_Click'?我們可以看到XAML嗎? –
https://pastebin.com/09SZhS3n –
請提出問題。 –