/// <summary>
/// 清空所有列表项
/// </summary>
public void Clear()
{
this.count = 0;
m_arrItem = null;
this.owner.Invalidate();
}
//确认存储空间
private void EnsureSpace(int elements)
{
if (m_arrItem == null)
m_arrItem = new ChatListItem[Math.Max(elements, 4)];
else if (this.count + elements > m_arrItem.Length) {
ChatListItem[] arrTemp = new ChatListItem[Math.Max(this.count + elements, m_arrItem.Length * 2)];
m_arrItem.CopyTo(arrTemp, 0);
m_arrItem = arrTemp;
}
}
