Question

您好，我无法弄清楚我的表格出了什么问题。我已经尝试调试，并且会给我这个：

'ProjectDAD.exe' (CLR v4.0.30319: ProjectDAD.exe): Loaded'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\UIAutomationProvider\v4.0_4.0.0.0__31bf3856ad364e35\UIAutomationProvider.dll'. Cannot find or open the PDB file.
'ProjectDAD.exe' (CLR v4.0.30319: ProjectDAD.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll'. Cannot find or open the PDB file.
'ProjectDAD.exe' (CLR v4.0.30319: ProjectDAD.exe): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.UI.winmd'. Module was built without symbols.
'ProjectDAD.exe' (CLR v4.0.30319: ProjectDAD.exe): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.Foundation.winmd'. Module was built without symbols.
'ProjectDAD.exe' (CLR v4.0.30319: ProjectDAD.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.InteropServices.WindowsRuntime\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.InteropServices.WindowsRuntime.dll'. Module was built without symbols.
'ProjectDAD.exe' (CLR v4.0.30319: ProjectDAD.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.WindowsRuntime\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.WindowsRuntime.dll'. Cannot find or open the PDB file.
The program '[13388] ProjectDAD.exe' has exited with code 0 (0x0).

除了我每次运行该表单并单击该表单上的按钮时，都不会显示任何错误，它什么也不会做。不会给我任何错误。就像我单击按钮时事件未运行。

这是我的表格的Cs代码：

using System;
using System.Windows;
using ProjectDAD.Models.DB;

namespace ProjectDAD.Rental_Management
{
/// <summary>
/// Interaction logic for toRent.xaml
/// </summary>
public partial class toRent : Window
{
    public toRent()
    {
        InitializeComponent();
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {


        System.Windows.Data.CollectionViewSource truckRentalViewSource = 
((System.Windows.Data.CollectionViewSource) 
(this.FindResource("truckRentalViewSource")));
        // Load data by setting the CollectionViewSource.Source property:
        // truckRentalViewSource.Source = [generic data source]
        System.Windows.Data.CollectionViewSource truckCustomerViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("truckCustomerViewSource")));
        // Load data by setting the CollectionViewSource.Source property:
        // truckCustomerViewSource.Source = [generic data source]
        System.Windows.Data.CollectionViewSource truckPersonViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("truckPersonViewSource")));
        // Load data by setting the CollectionViewSource.Source property:
        // truckPersonViewSource.Source = [generic data source]
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {

            TruckCustomer cust = new TruckCustomer();
            cust.Age = int.Parse(ageTextBox.Text);
            cust.LicenseNumber = licenseNumberTextBox.Text;
            cust.LicenseExpiryDate = licenseExpiryDateDatePicker.SelectedDate.Value.Date;


            TruckPerson per = new TruckPerson();
            per.Address = addressTextBox.Text;
            per.Telephone = telephoneTextBox.Text;
            per.Name = nameTextBox.Text;


            int truckId = int.Parse(truckIdTextBox.Text);
            IndividualTruck truck = DataService.searchTruckByID(truckId);
            decimal priceTotal = decimal.Parse(totalPriceTextBox.Text);

            TruckRental toRent = new TruckRental();
            toRent.TotalPrice = priceTotal;
            toRent.RentDate = new DateTime();
            toRent.ReturnDate = new DateTime();
            toRent.Customer = cust;
            toRent.Truck = truck;
            truck.Status = "Rented";


            DataService.rentTruck(toRent, true);

            MessageBox.Show("Truck rented succesfully");


    }
}

}

这是我的数据服务CS：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ProjectDAD.Models.DB;
using Microsoft.EntityFrameworkCore;

namespace ProjectDAD
{
public class DataService
{
    public static void rentTruck(TruckRental toRent, bool isNewCustomer)
    {
        using (var ctx = new DAD_TruckRental_RGMContext())
        {
            if(!isNewCustomer)
            {
                ctx.Entry(toRent.Customer).State = EntityState.Unchanged;                 
            }
            ctx.Entry(toRent.Customer).State = EntityState.Modified;
            ctx.TruckRental.Add(toRent);
            ctx.SaveChanges();
        }
    }

    public static IndividualTruck searchTruckByID(int truckid)
    {
        using (var ctx = new DAD_TruckRental_RGMContext())
        {
            return ctx.IndividualTruck.Where(t => t.TruckId == truckid).FirstOrDefault();
        }
    }


  }
}

Answer 1

请检查按钮绑定，并确保已将其正确绑定到单击处理程序。您可以使用“探听”来查看可视化树，运行时绑定和所有属性。它还显示了UI触发了哪些事件。您可以找到它here。希望这会有所帮助。

Answer 2

您需要在XAML中挂接事件处理程序：

<Button FontSize="25" Content="Sell" HorizontalAlignment="Left" 
        Margin="340,318,0,0" VerticalAlignment="Top" Width="129" Height="37"
        Click="Button_Click" />

如何确定WPF按钮事件是否正在采取行动

2 个答案: