/// <summary>
/// Reander list items to list box control.
/// </summary>
/// <param name="component">List box control.</param>
/// <param name="itemsToRender">Specified list box items.</param>
/// <param name="setHeight">A value indicating whether calculates control's height by item's position.</param>
private void RenderItems(Control component, TemplateItemCollection itemsToRender, bool setHeight = true)
{
int itemCount = itemsToRender.Count;
int itemIndex = 0;
int rowIndex = 0;
int breakTimes = 0;
component.Controls.Clear();
while (itemIndex < itemCount)
{
int left = ItemControlLeft;
int top = rowIndex * ItemControlTop;
int index = 0;
do
{
Control control = GetTemplateItemControl(itemIndex, itemsToRender[itemIndex]);
if (left + control.PreferredSize.Width < Width || Column == 1)
{
component.Controls.Add(control);
control.Top = top;
control.Left = left;
left += control.Width;
itemIndex++;
index++;
}
else
{
component.Controls.Remove(control);
breakTimes++;
break;
}
} while (itemIndex < itemCount && (Column == 0 || index < Column));
rowIndex++;
if (breakTimes > itemCount)
{
break;
}
}
if (setHeight)
{
component.Height = component.Controls[itemCount - 1].Bottom;
}
}
/// <summary>
/// Rerender list items when list box control's some property changed.
/// </summary>
private void RerenderItemsWhenPropertyChanged()
{
TemplateItemCollection items = null;
//if there is no user data then show the default template items
//else show the user data.
if (!_isCustomized)
{
CreateDefaultTemplateItems();
items = _tempItems;
}
else
{
items = Items;
}
RenderItems(Component, items);
}