/// <summary>
/// Shortcut 功能
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value"></param>
/// <param name="key"></param>
public virtual BaseControl Import <T>(T value, string key = null)
{
ViewStateEx.Set <T>(value, key);
return(this);
}
/// <summary>
/// 由别的 控件 输入指定类型或者 key 的 ViewState 值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="c"></param>
/// <param name="key"></param>
public virtual BaseControl Import <T>(BaseControl c, string key = null)
{
ViewStateEx.Set <T>(c.ViewStateEx.Get <T>(key: key), key: key);
return(this);
}