Question

我需要一个int血型等于特定值，具体取决于检查哪个单选按钮。如果任何bool为真，它将使血型等于特定值。我只是不知道如何让bool为int bloodtype分配一个值。有什么指针吗？

private void btnAddPatient_Click(object sender, RoutedEventArgs e)////Adds Patients using buttone etc to set properties
    {
        string name = txtPatientName.Text;
        int bloodType,x=1;           
         DateTime dob;
        bool bloodA = rbA.IsChecked.Equals(true);
        bool bloodB = rbB.IsChecked.Equals(true);
        bool bloodAB = rbAB.IsChecked.Equals(true);
        bool blood0 = rb0.IsChecked.Equals(true);



        if (dpDOB.SelectedDate == null || txtPatientName.Text == "" || !bloodA || !bloodAB || !bloodB || !blood0)
        {

            if (txtPatientName.Text == "")
            {
                MessageBox.Show("Please enter Patient's Name");
            }

            else if (dpDOB.SelectedDate == null)
            {
                MessageBox.Show("Please select a date");
            }


            else if(!bloodA || !bloodAB || !bloodB || !blood0)
            {
                MessageBox.Show("Please enter patient's blood type");
            }

        }

        else
        {
            //bloodType  How to make this equal to a value depending on what radio button is checked?
            dob = dpDOB.SelectedDate.Value;

            Patient patient = new Patient(name, bloodType, x, dob);

            MainWindow mainWindow = Owner as MainWindow;

            patients.Add(patient);
            lstPatients.ItemsSource = null;
            lstPatients.ItemsSource = patients;
            // this.Close();
        }
    }

Answer 1

首先，我建议提取类型，enum确切地说：

  // [Flags] // you may want declare enum as Flags
  public enum BloodType {
     O = 0,
     A = 1,
     B = 2,
    AB = 3
  }

然后您可以在三元运算符的帮助下分配BloodType值：

  BloodType bloodType = 
      rb0.IsChecked ? BloodType.O 
    : rbA.IsChecked ? BloodType.A
    : rbB.IsChecked ? BloodType.B
    : BloodType.AB;

如果你想获得int值，只需投射：

 int v = (int) bloodType;

 BloodType t = (BloodType) v;

Answer 2

使用if else if检查每个单选按钮是否为真，并指定正确的值像这样：

            else
            {
                //bloodType  How to make this equal to a value depending on what radio button is checked?
                if(bloodA)
                {
                    bloodType = 0;
                }
                else if(bloodB)
                {
                    bloodType = 1;
                }
            }

Answer 3

如果您不是嵌套ifs的朋友，那么另一种解决方案是将int值分配给每个单选按钮的Tag属性。然后，对组框中的所有按钮进行分组，找出哪个按钮被选中，最后将标记内容强制转换为int。

import sys
import ctypes
from sdl2 import *
import sdl2.sdlgfx as sdlgfx

if __name__ == "__main__":
    SDL_Init(SDL_INIT_VIDEO)

    window = SDL_CreateWindow("Test",
                              SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
                              200, 200, SDL_WINDOW_SHOWN)
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED)


    ############################################################
    surface = SDL_CreateRGBSurface(0, 200, 200, 32,
                                   0xff000000, # r mask
                                   0x00ff0000, # g mask
                                   0x0000ff00, # b mask
                                   0x000000ff) # a mask
    soft_renderer = SDL_CreateSoftwareRenderer(surface)

    SDL_SetRenderDrawColor(soft_renderer, 255, 255, 0, 255) #yellow background
    SDL_SetRenderDrawBlendMode(soft_renderer, SDL_BLENDMODE_NONE)
    SDL_RenderClear(soft_renderer)
    sdlgfx.filledCircleRGBA(soft_renderer, 100, 100, 100, 0, 255, 255, 255)
    sdlgfx.filledCircleRGBA(soft_renderer, 100, 100,  80, 255, 255, 0, 255) #yellow
    SDL_SetColorKey(surface, SDL_TRUE, 0xffff00ff) #yellow colorkey

    circ = SDL_CreateTextureFromSurface(renderer, surface)

    SDL_DestroyRenderer(soft_renderer)
    SDL_FreeSurface(surface)
    ############################################################

    running = True
    event = SDL_Event()
    while running:
        # Event loop
        while SDL_PollEvent(ctypes.byref(event)) != 0:
            if event.type == SDL_QUIT:
                running = False
                break
        # Rendering
        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255)
        SDL_RenderClear(renderer)
        sdlgfx.thickLineRGBA(renderer, 200, 0, 0, 200, 10, 255, 255, 255, 255)
        SDL_RenderCopy(renderer, circ, None, None)
        SDL_RenderPresent(renderer);

    SDL_DestroyTexture(circ)
    SDL_DestroyRenderer(renderer)
    SDL_DestroyWindow(window)
    SDL_Quit()

Answer 4

有很多方法可以做到这一点。还有一个：

首选强数据类型。使用Enum over int。

public enum BloodTypeEnum
{
    TypeO = 0,
    TypeA = 1,
    TypeB = 2
}

将实例添加到ViewModel

public class MainViewModel : ViewModelBase
{
    private BloodTypeEnum _bloodType;

    public BloodTypeEnum BloodType
    {
        get { return _bloodType; }
        set
        {
            _bloodType = value;
            RaisePropertyChanged();
        }
    }
}

使用强数据类型和ValueConverter

编写XAML

<StackPanel>
    <StackPanel.Resources>
        <local:EnumToBoolConverter x:Key="EnumToBoolConverter"></local:EnumToBoolConverter>
    </StackPanel.Resources>
    <StackPanel>
        <RadioButton IsChecked="{Binding BloodType, Converter={StaticResource EnumToBoolConverter}, ConverterParameter={x:Static local:BloodTypeEnum.TypeO}, Mode=TwoWay}">Type O</RadioButton>
        <RadioButton IsChecked="{Binding BloodType, Converter={StaticResource EnumToBoolConverter}, ConverterParameter={x:Static local:BloodTypeEnum.TypeA}, Mode=TwoWay}">Type A</RadioButton>
        <RadioButton IsChecked="{Binding BloodType, Converter={StaticResource EnumToBoolConverter}, ConverterParameter={x:Static local:BloodTypeEnum.TypeB}, Mode=TwoWay}">Type B</RadioButton>
    </StackPanel>
</StackPanel>

实施ValueConverter

public class EnumToBoolConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return object.Equals(value, parameter);
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return System.Convert.ToBoolean(value) ? parameter : DependencyProperty.UnsetValue;
    }
}

如果bool为true，则返回int

4 个答案: