[RefreshProperties(RefreshProperties.All)] public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
{
if (context == null || provider == null || context.Instance == null)
{
return(base.EditValue(provider, value));
}
oEditorService = (System.Windows.Forms.Design.IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (oEditorService != null)
{
// Get the Back reference to the Custom Property
CustomProperty.CustomPropertyDescriptor oDescriptor = (CustomProperty.CustomPropertyDescriptor)context.PropertyDescriptor;
CustomProperty cp = (CustomProperty)oDescriptor.CustomProperty;
// Declare attributes
UIListboxDatasource datasource;
UIListboxValueMember valuemember;
UIListboxDisplayMember displaymember;
// Get attributes
datasource = (UIListboxDatasource)context.PropertyDescriptor.Attributes[typeof(UIListboxDatasource)];
valuemember = (UIListboxValueMember)context.PropertyDescriptor.Attributes[typeof(UIListboxValueMember)];
displaymember = (UIListboxDisplayMember)context.PropertyDescriptor.Attributes[typeof(UIListboxDisplayMember)];
oList.BorderStyle = BorderStyle.None;
oList.IntegralHeight = true;
if (datasource != null)
{
oList.DataSource = datasource.Value;
}
if (displaymember != null)
{
oList.DisplayMember = displaymember.Value;
}
if (valuemember != null)
{
oList.ValueMember = valuemember.Value;
}
if (value != null)
{
if (value.GetType().Name == "String")
{
oList.Text = (string)value;
}
else
{
oList.SelectedItem = value;
}
}
oList.SelectedIndexChanged += new System.EventHandler(this.SelectedItem);
oEditorService.DropDownControl(oList);
if (oList.SelectedIndices.Count == 1)
{
cp.SelectedItem = oList.SelectedItem;
cp.SelectedValue = oSelectedValue;
value = oList.Text;
}
oEditorService.CloseDropDown();
}
else
{
return(base.EditValue(provider, value));
}
return(value);
}
public virtual int Add(CustomProperty value)
{
return(base.List.Add(value));
}
/// <summary>
/// 排序
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <returns></returns>
private int ComparerCustomProperty(CustomProperty x, CustomProperty y)
{
return(x.Order.CompareTo(y.Order));
}