[英]How to set multiple selected items on a WinForms ListBox
我在多个选择模式下有一个System.Windows.Forms.ListBox,并且我要选择一组项目。 我怎么做?
[Test]
public void SetListBox()
{
var listBox = new ListBox();
var items = new List<string>{"one", "two", "three", "four"};
listBox.SelectionMode = SelectionMode.MultiSimple;
listBox.Items.AddRange(items.ToArray());
var selectedItems = new List<string> {"two", "four"};
// ???
Assert.AreEqual(selectedItems, listBox.SelectedItems);
}
做这个:
selectedItems.Select(sd => listBox.Items.IndexOf(sd)).Where(i => i >= 0).ToList().ForEach(i => listBox.SetSelected(i, true));
对于:
[Test]
public void SetListBox()
{
var listBox = new ListBox();
var items = new List<string>{"one", "two", "three", "four"};
listBox.SelectionMode = SelectionMode.MultiSimple;
listBox.Items.AddRange(items.ToArray());
var selectedItems = new List<string> {"two", "four"};
selectedItems.Select(sd => listBox.Items.IndexOf(sd)).Where(i => i >= 0).ToList().ForEach(i => listBox.SetSelected(i, true));
Assert.AreEqual(selectedItems, listBox.SelectedItems);
}
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