将combox中的复选框设置为选中的wpf [英] set checkbox in a combox to checked wpf

问题描述

我创建了一个自定义的wpf控件-本质上是带有复选框的combox. combox全部成功绑定到项目列表.

这是我的xaml代码.

    < ComboBox Height ="28"； Horizo​​ntalAlignment =左"保证金＝"106,7,0,0&".名称="comboBox1"； VerticalAlignment =顶部"宽度＝"174". ItemsSource =< {装订名称}">
                    < ComboBox.ItemTemplate>
                        < DataTemplate>
                            < CheckBox Name =" ckabc" Content ="{Binding}" CommandParameter =" {Binding}"/>
                        </DataTemplate>
                    </ComboBox.ItemTemplate>
                </ComboBox> 

我的代码是这样的:

   私有列表< string>名称；
   公共列表< string>名称
        {
           得到{返回名称； }
           设置
            {
               名称=值；
                this.OnPropertyChanged(new PropertyChangedEventArgs("Names")));
            }
        }
   名称= new List< string> {未连接传感器"，信号质量差"，光线过大"，未连接前置放大器"，更换传感器"，检测到干扰"，无法使用传感器"， 传感器变化"指的是传感器变化". };
            this.OnPropertyChanged(new PropertyChangedEventArgs("Names")));

我为每个列表项创建了属性:

   公共字符串SensorNotConnected
        {
           得到
            {
               返回Names.ElementAt(0);
            }
           设置
            {
                this.emuObj.SensorNotConnected(Convert.ToBoolean(value)，channelIndex);
            }
        }
为其他列表项创建属性的方法相同.
我的想法是绑定复选框的Ischecked属性并进行迭代.
但是我该怎么做.用户可以选择一个复选框或多个复选框.
请为此提供一些答案.

Hi,

I have created a custom wpf control- essentially a combox with checkbox. The combox all successfully bound to a list of item.

It's my xaml code.

    <ComboBox Height="28" HorizontalAlignment="Left" Margin="106,7,0,0" Name="comboBox1" VerticalAlignment="Top" Width="174" ItemsSource="{Binding Names}">
                    <ComboBox.ItemTemplate>
                        <DataTemplate>
                            <CheckBox Name="ckabc" Content="{Binding}" CommandParameter="{Binding}"/>
                        </DataTemplate>
                    </ComboBox.ItemTemplate>
                </ComboBox> 

My code is here like this:

    private List<string> names;
    public List<string> Names
        {
            get { return names; }
            set
            {
                names = value;
                this.OnPropertyChanged(new PropertyChangedEventArgs("Names"));
            }
        }
    Names = new List<string> { "Sensor Not Connected", "Poor Signal Quality", "Excessive Light", "PreAmp Not Connected", "Replace Sensor", "Interference Detected", "Sensor Unusable", "Sensor Change" };
            this.OnPropertyChanged(new PropertyChangedEventArgs("Names"));

I have created property for each list item:

    public string SensorNotConnected
        {
            get
            {
                return Names.ElementAt(0);
            }
            set
            {
                this.emuObj.SensorNotConnected(Convert.ToBoolean(value), channelIndex);
            }
        }
same way created property for other list item.
My thinking is to bind Ischecked property of checkbox and iterate over.
But how Can I do that. User can select one check box or multiple checkbox.
Please provide some answer for this.

P.S:我正在使用MVVM模型.

P.S: I'm using MVVM model.

vikas sharma AB

vikas sharma AB

推荐答案

维卡斯，

您应该为ComboBox中的每个对象创建一个ViewModel，例如这个:

you should create a ViewModel for each object in your ComboBox like e.g. this:

  public class NameModel : INotifyPropertyChanged
    {
        private bool _isChecked;

        public NameModel(string name)
        {
            Name = name;
        }
        public string Name { get;private set; }

        public bool IsChecked
        {
            get { return _isChecked; }
            set
            {
                _isChecked = value;
                var handler = PropertyChanged;
                if (handler != null)
                {
                    handler(this, new PropertyChangedEventArgs("IsChecked"));
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }

然后，您可以创建用于Window，UserControl或其他任何内容的ViewModel:-):

Then you can create your ViewModel that is used for your Window, UserControl or whatever :-) :

    public class MainViewModel
    {
        private List<string> _names;
        public MainViewModel()
        {
            _names = new List<string> { "Sensor Not Connected", "Poor Signal Quality", "Excessive Light", "PreAmp Not Connected", "Replace Sensor", "Interference Detected", "Sensor Unusable", "Sensor Change" };
            NameModels = _names.Select(name => new NameModel(name)).ToList();
        }
        public List<NameModel> NameModels { get; private set; }
        
        
    }

并在ComboBox中使用NameModel:

And use the NameModel in the ComboBox:

<ComboBox Height="28" HorizontalAlignment="Left" Margin="106,7,0,0" VerticalAlignment="Top" Width="174" ItemsSource="{Binding NameModels}">
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <CheckBox Name="ckabc" Content="{Binding Name}" IsChecked="{Binding IsChecked,Mode=TwoWay}"/>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>

现在，您已经在MainViewModel的列表中拥有了所有IsChecked-States，并且可以对该列表进行任何操作.

Now you've all your IsChecked-States in the List in your MainViewModel and you can do whatever you want with that list.

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