/// <summary>
/// 根据DirectoryInfo数组更新控件listbox
/// </summary>
/// <param name="lb"></param>
/// <param name="dir"></param>
public static void UpdateByDirectoryInfos(ListBox lb, DirectoryInfo dir)
{
lb.BeginInit();
var it = new MyListBoxItem(dir.Name, MyIcons.folder);
it.MyMessage = "目录路径:" + dir.FullName;
lb.Items.Add(it);
lb.EndInit();
}
/// <summary>
/// 根据FileInfo数组更新控件listbox
/// </summary>
/// <param name="lb"></param>
/// <param name="files"></param>
public static void UpdateByFileInfos(ListBox lb, FileInfo[] files)
{
lb.BeginInit();
foreach (var i in files)
{
var it = new MyListBoxItem(i.Name, MyIcons.file);
it.MyMessage = "所在路径:" + i.DirectoryName;
lb.Items.Add(it);
}
lb.EndInit();
}
public void PopulateListBox(ListBox listBox)
{
listBox.BeginInit();
listBox.Items.Clear();
foreach (var item in MetricQuotas)
{
listBox.Items.Add(item.Key);
}
listBox.EndInit();
}
private static void FillListBoxWithAutogeneratedItems(string prefixText, ListBox listBox)
{
listBox.BeginInit();
listBox.Items.Clear();
for (int i = 0; i < 300; i++)
{
listBox.Items.Add(prefixText + i);
}
listBox.EndInit();
}
/// <summary>
/// 由CurrentPath变量刷新listbox
/// </summary>
/// <param name="lb"></param>
/// <param name="CurrentPath"></param>
public static void FlushLBByCurrentPath(ListBox lb, string CurrentPath)
{
lb.BeginInit();
var list = CreatLBItemFromPath(CurrentPath);
lb.Items.Clear();
foreach (var i in list)
{
lb.Items.Add(i);
}
lb.EndInit();
}
public void Setting_SelectedItem_Before_Initialize_Should_Retain()
{
var listBox = new ListBox
{
SelectionMode = SelectionMode.Single,
Items = new[] { "foo", "bar", "baz" },
SelectedItem = "bar"
};
listBox.BeginInit();
listBox.EndInit();
Assert.Equal(1, listBox.SelectedIndex);
Assert.Equal("bar", listBox.SelectedItem);
}
public void SelectedIndex_Should_Be_Minus_1_After_Initialize()
{
var items = new[]
{
new Item(),
new Item(),
};
var target = new ListBox();
target.BeginInit();
target.Items = items;
target.Template = Template();
target.EndInit();
Assert.Equal(-1, target.SelectedIndex);
}
public void Setting_SelectedIndex_During_Initialize_Should_Take_Priority_Over_Previous_Value()
{
var listBox = new ListBox
{
SelectionMode = SelectionMode.Single,
Items = new[] { "foo", "bar", "baz" },
SelectedIndex = 2
};
listBox.BeginInit();
listBox.SelectedIndex = 1;
listBox.EndInit();
Assert.Equal(1, listBox.SelectedIndex);
Assert.Equal("bar", listBox.SelectedItem);
}
public void SelectedIndex_Should_Be_0_After_Initialize_With_AlwaysSelected()
{
var items = new[]
{
new Item(),
new Item(),
};
var target = new ListBox();
target.BeginInit();
target.SelectionMode = SelectionMode.Single | SelectionMode.AlwaysSelected;
target.Items = items;
target.Template = Template();
target.EndInit();
Assert.Equal(0, target.SelectedIndex);
}
public void Can_Set_Both_SelectedItem_And_SelectedItems_During_Initialization()
{
// Issue #2969.
var target = new ListBox();
var selectedItems = new List <object>();
target.BeginInit();
target.Template = Template();
target.Items = new[] { "Foo", "Bar", "Baz" };
target.SelectedItems = selectedItems;
target.SelectedItem = "Bar";
target.EndInit();
Assert.Equal("Bar", target.SelectedItem);
Assert.Equal(1, target.SelectedIndex);
Assert.Same(selectedItems, target.SelectedItems);
Assert.Equal(new[] { "Bar" }, selectedItems);
}
public void Binding_With_DelayedBinding_And_Initialization_Where_DataContext_Is_Root_Works()
{
// Test for #1932.
var root = new RootWithItems();
root.BeginInit();
root.DataContext = root;
var target = new ListBox();
target.BeginInit();
root.Child = target;
DelayedBinding.Add(target, ItemsControl.ItemsProperty, new Binding(nameof(RootWithItems.Items)));
DelayedBinding.Add(target, ListBox.SelectedItemProperty, new Binding(nameof(RootWithItems.Selected)));
target.EndInit();
root.EndInit();
Assert.Equal("b", target.SelectedItem);
}
public void Setting_SelectedItems_Before_Initialize_Should_Retain()
{
var listBox = new ListBox
{
SelectionMode = SelectionMode.Multiple,
Items = new[] { "foo", "bar", "baz" },
};
var selected = new[] { "foo", "bar" };
foreach (var v in selected)
{
listBox.SelectedItems.Add(v);
}
listBox.BeginInit();
listBox.EndInit();
Assert.Equal(selected, listBox.SelectedItems);
}
public void Setting_SelectedIndex_During_Initialize_Should_Select_Item_When_AlwaysSelected_Is_Used()
{
var listBox = new ListBox
{
SelectionMode = SelectionMode.Single | SelectionMode.AlwaysSelected
};
listBox.BeginInit();
listBox.SelectedIndex = 1;
var items = new AvaloniaList <string>();
listBox.Items = items;
items.Add("A");
items.Add("B");
items.Add("C");
listBox.EndInit();
Assert.Equal("B", listBox.SelectedItem);
}
public void Setting_SelectedItems_During_Initialize_Should_Take_Priority_Over_Previous_Value()
{
var listBox = new ListBox
{
SelectionMode = SelectionMode.Multiple,
Items = new[] { "foo", "bar", "baz" },
};
var selected = new[] { "foo", "bar" };
foreach (var v in new[] { "bar", "baz" })
{
listBox.SelectedItems.Add(v);
}
listBox.BeginInit();
listBox.SelectedItems = new AvaloniaList <object>(selected);
listBox.EndInit();
Assert.Equal(selected, listBox.SelectedItems);
}
