将绑定列表数据绑定到组合框和删除项目 [英] Databinding bindinglist to combobox and removing items

问题描述

  var items = new BindingList< p>我想使用窗体数据绑定将组合框挂接到ViewModel类。 ; Person>（）; 
 comboBox.DataSource = items; 
 comboBox.DisplayMember =Name; 
  

除了从列表中删除项目，所有工作都正常。例如，如果我删除当前选择的项目（在组合框中选择），组合框的selectedIndexChanged和SelectedValueChanged事件不会触发。

解决方案

找到答案。我不得不使用BindingSource作为中间人

  var bindingsSource = new BindingSource（）; 
 bindingsSource.DataSource = new BindingList< Person>（）; 
 comboBox1.DataSource = bindingsSource; 
 comboBox1.DisplayMember =Name; 
  

这样，当我删除某些内容时， >

I am trying to use windows forms databinding to hook up a combobox to a ViewModel class.

var items = new BindingList<Person>();
comboBox.DataSource = items;
comboBox.DisplayMember = "Name";

All works ok except when I remove items from the list. For example if I remove the currently selected item (selected in the combobox) the selectedIndexChanged and SelectedValueChanged events of the combobox don't fire.

解决方案

Found an answer. I had to use a BindingSource as middleman

  var bindingsSource = new BindingSource();
  bindingsSource.DataSource = new BindingList<Person>();
  comboBox1.DataSource = bindingsSource;
  comboBox1.DisplayMember = "Name";

This way I do get value changed events and even more than one when I deleted something.

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