/// <summary>
/// 绑定集合到ToolStripComboBox
/// </summary>
/// <typeparam name="T">泛型类型</typeparam>
/// <param name="toolStripComboBox">ToolStripComboBox</param>
/// <param name="bindItemss">要绑定的集合</param>
/// <param name="selectedItem">默认选中项,不设置默认选中时该值为null[默认值为null]</param>
private static void BindingIEnumerableGenericToToolStripComboBox <T>(System.Windows.Forms.ToolStripComboBox toolStripComboBox, List <FieldInfoEx> bindItemss, T selectedItem = null) where T : class
{
if (toolStripComboBox == null)
{
throw new ArgumentNullException(nameof(toolStripComboBox), "目标控件不能为null");
}
try
{
toolStripComboBox.Items.Clear();
if (bindItemss.Count == 0)
{
return;
}
int selectedIndex = 0;
FieldInfoEx item = null;
for (int i = 0; i < bindItemss.Count; i++)
{
item = bindItemss[i];
if (item.Value == selectedItem || object.Equals(item.Value, selectedItem))
{
selectedIndex = i;
}
toolStripComboBox.Items.Add(item);
}
toolStripComboBox.SelectedIndex = selectedIndex;
}
catch (Exception ex)
{
throw new Exception("绑定值失败", ex);
}
}
/// <summary>
/// 获取ComboBox枚举选中项
/// </summary>
/// <typeparam name="T">枚举类型</typeparam>
/// <param name="combox">ComboBox</param>
/// <returns>选中项枚举值</returns>
public static T GetEnumFromComboBox <T>(System.Windows.Forms.ComboBox combox) where T : struct
{
EnumEx.AssertEnum <T>();
if (combox == null)
{
throw new ArgumentNullException(nameof(combox), "目标控件不能为null");
}
try
{
FieldInfoEx selectedItem = (FieldInfoEx)(combox.Items[combox.SelectedIndex]);
return((T)selectedItem.Value);
}
catch (Exception ex)
{
throw new Exception("获取值失败", ex);
}
}
/// <summary>
/// 构造函数
/// </summary>
public PropertyGridEnumControl(object value)
{
InitializeComponent();
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
Type valueType = value.GetType();
if (!valueType.IsEnum)
{
throw new ArgumentException(string.Format("类型:{0}不是枚举类型", valueType.FullName));
}
List <FieldInfoEx> dbiItems = EnumEx.GetEnumFieldInfoExList(valueType);
FieldInfoEx selectedItem = (from item in dbiItems where value.Equals(item.Value) select item).FirstOrDefault();
DropdownBoxHelper.BindingIEnumerableGenericToComboBox <FieldInfoEx>(comboBoxEnum, dbiItems, "Text", selectedItem);
}
/// <summary>
/// Zwraca wartość wskazującą, czy okno jest modalne (ShowDialog).
/// </summary>
/// <param name="window">Okno.</param>
public static bool IsModal(this Window window)
{
return(FieldInfoEx.GetValue <Window, bool>(window, "_showingAsDialog"));
}
/// <summary>
/// 绑定泛型集合到ComboBox
/// </summary>
/// <typeparam name="T">泛型类型</typeparam>
/// <param name="combox">ComboBox</param>
/// <param name="displayFun">显示的委托,当为null时调用成员的ToString方法的值作为显示值[默认值为null]</param>
/// <param name="items">要绑定的集合</param>
/// <param name="selectedItem">默认选中项,不设置默认选中时该值为null[默认值为null]</param>
public static void BindingIEnumerableGenericToComboBox <T>(System.Windows.Forms.ComboBox combox, Func <T, string> displayFun, IEnumerable <T> items, T selectedItem = null) where T : class
{
List <FieldInfoEx> bindItems = FieldInfoEx.GenericToDropdownBindingItems <T>(items, displayFun);
BindingIEnumerableGenericToComboBox <T>(combox, bindItems, selectedItem);
}
/// <summary>
/// 绑定集合到ToolStripComboBox
/// </summary>
/// <typeparam name="T">泛型类型</typeparam>
/// <param name="toolStripComboBox">ToolStripComboBox</param>
/// <param name="items">要绑定的集合</param>
/// <param name="displayMember">显示的成员,属性名或字段名,当为null时调用成员的ToString方法的值作为显示值[默认值为null]</param>
/// <param name="selectedItem">默认选中项,不设置默认选中时该值为null[默认值为null]</param>
public static void BindingIEnumerableGenericToToolStripComboBox <T>(System.Windows.Forms.ToolStripComboBox toolStripComboBox, IEnumerable <T> items, string displayMember = null, T selectedItem = null) where T : class
{
List <FieldInfoEx> bindItems = FieldInfoEx.GenericToDropdownBindingItems <T>(items, displayMember);
BindingIEnumerableGenericToToolStripComboBox <T>(toolStripComboBox, bindItems);
}
