将observerbaleCollection绑定到wpf组合框 [英] Bind observerbaleCollection to wpf combo box

问题描述

我正在使用类调用Apps.It有Observable集合，名为AvailableTypes.I想要将此AvailableTypes可观察集合绑定到wpf组合框。当表单加载时，这些AppId应该加载到组合框中..你能不能给我解决这个问题？

  class 应用程序：INotifyPropertyChanged {
 
 ServiceReference1 .AssetManagerServiceClient客户端; 
 ObservableCollection< string> availableType; 
 
  public  ObservableCollection< string> AvailableTypes 
 {
  get  
 {
  if （ availableType ==  null ）
 {
 availableType =  new  ObservableCollection< string>（ ）; 
 
} 
 client =  new  ServiceReference1.AssetManagerServiceClient（）; 
 List< string> AssestList = client.GetAppIds（）。ToList< string>（）; 
 
  foreach （ string  appid  in  AssestList）
 {
 availableType.Add（appid）; 
} 
 
  return  availableType; 
} 
 
  set  
 {
 availableType =  value ; 
 NotifyPropertyChanged（  AvailableTypes）; 
} 
} 
 
  public   event  PropertyChangedEventHandler PropertyChanged ; 
 
  private   void  NotifyPropertyChanged（ string  propertyName）
 {
  if （PropertyChanged！=  null  ）
 PropertyChanged（ this ， new  PropertyChangedEventArgs（propertyName））; 
} 
} 
} 

解决方案

基本上，你必须使用 ItemSource ， SelectedValuePath ， DisplayMemberPath 具有相应绑定的属性。

 <   combobox     itemssource   =  {Binding Path = AvailableTypes} >  
 SelectedValuePath =[您选择的值路径]
 DisplayMemberPath = [您的展示会员路径]/> 
 <   / combobox  >  

I''m having Class call Apps.It has Observable collection called AvailableTypes.I want to bind this AvailableTypes observable collection to the wpf Combo Box.when form is loaded these AppId should loaded into combo box.. Would you give me a solution to this one?

class Apps: INotifyPropertyChanged{

        ServiceReference1.AssetManagerServiceClient client;
        ObservableCollection<string> availableType;

        public ObservableCollection<string> AvailableTypes
        {
            get
            {
                if (availableType == null)
                {
                    availableType = new ObservableCollection<string>();

                }
                client = new ServiceReference1.AssetManagerServiceClient();
                List<string> AssestList = client.GetAppIds().ToList<string>();

                foreach (string appid in AssestList)
                {
                    availableType.Add(appid);
                }

                return availableType;
            }

            set
            {
                availableType = value;
                NotifyPropertyChanged("AvailableTypes");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

解决方案

Basically, you have to use "ItemSource", "SelectedValuePath", "DisplayMemberPath" property with respective binding.

<combobox itemssource="{Binding Path=AvailableTypes}">
          SelectedValuePath="[your selected value path]"
          DisplayMemberPath="[your display member path]" />
</combobox>

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