OnTextChanged(EventArgs.Empty);

/// <summary>
/// 
/// </summary>
public delegate void GridPageChangedEventHandler(object source, GridPage ChangedEventArgs e);
public class GridPageChangedEventArgs : System.EventArgs
{
  public GridPageChangedEventArgs()
  {
  }

  private int intCurrentPageIndex;
  public new int CurrentPageIndex
  {
    get { return intCurrentPageIndex; }
    set { intCurrentPageIndex = value; }
  }

  private int intPageCount;
  public new int PageCount
  {
    get { return intPageCount; }
    set { intPageCount = value; }
  }

  private int intPageSize;
  public new int PageSize
  {
    get { return intPageSize; }
    set { intPageSize = value; }
  }
}

/// <summary>
/// 
/// </summary>
public class EventArgs
{
  //表示没有事件数据的事件
  public static readonly EventArgs Empty;
  //初始化 System.EventArgs 类的新实例
  public EventArgs();
}

public delegate void GridPageChangedEventHandler(object source, GridPage ChangedEventArgs e);

protected void Grid1_PageIndexChanged(object source,GridPageChangedEventArgs e)
{
  int intCurrentPageIndex = e.CurrentPageIndex;
  int intPageSize = e.PageSize;
  //获取数据逻辑
}

/// <summary>
/// 
/// </summary>
private new static readonly object EventPageIndexChanged = new object();
[Category("Action"), Description("翻页事件")]
public event GridPageChangedEventHandler PageIndexChanged
{
  add
  {
    base.Events.AddHandler(Grid.EventPageIndexChanged, value);
  }
  remove
  {
    base.Events.RemoveHandler(Grid.EventPageIndexChanged, value);
  }
}

/// <summary>
/// 
/// </summary>
protected override bool OnBubbleEvent(object source, EventArgs e)
{
  bool handled = false;
  if (e is GridCommandEventArgs)
  {
    if ((((GridCommandEventArgs)(e)).CommandSource) is LinkButton)
    {
      LinkButton lb=((LinkButton)(((GridCommandEventArgs)(e)). Command Source));
      if (lb.CommandName == "Page")
      {
        if (lb.CommandArgument == "ButtonFirst")
        {
          GridPageChangedEventArgs ee = new GridPageChangedEventArgs();
          if (this.CurrentPageIndex != 0)
          {
            this.CurrentPageIndex = 0;
            ee.CurrentPageIndex = this.CurrentPageIndex;
            ee.PageCount = this.PageCount;
            ee.PageSize = this.PageSize;
            this.OnPageIndexChanged(ee);
          }
          handled = true;
        }

        if (lb.CommandArgument == "ButtonNext")
        {
          GridPageChangedEventArgs ee = new GridPageChangedEventArgs();
          if (this.CurrentPageIndex < this.PageCount - 1)
          {
            this.CurrentPageIndex += 1;
            ee.CurrentPageIndex = this.CurrentPageIndex;
            ee.PageCount = this.PageCount;
            ee.PageSize = this.PageSize;
            this.OnPageIndexChanged(ee);
          }
          handled = true;
        }

        if (lb.CommandArgument == "ButtonPrev")
        {
          GridPageChangedEventArgs ee = new GridPageChangedEventArgs();
          if (this.CurrentPageIndex > 0)
          {
            this.CurrentPageIndex -= 1;
            ee.CurrentPageIndex = this.CurrentPageIndex;
            ee.PageCount = this.PageCount;
            ee.PageSize = this.PageSize;
            this.OnPageIndexChanged(ee);
          }
          handled = true;
        }

        if (lb.CommandArgument == "ButtonLast")
        {
          GridPageChangedEventArgs ee = new GridPageChangedEventArgs();
          if (this.CurrentPageIndex != this.PageCount - 1)
          {
            this.CurrentPageIndex = this.PageCount - 1;
            ee.CurrentPageIndex = this.CurrentPageIndex;
            ee.PageCount = this.PageCount;
            ee.PageSize = this.PageSize;
            this.OnPageIndexChanged(ee);
          }
          handled = true;
        }
      }
    }
  }
  return handled || base.OnBubbleEvent(source, e);
}

/// <summary>
///
/// </summary>
if (lb.CommandArgument == "ButtonNext")
{
    GridPageChangedEventArgs ee = new GridPageChangedEventArgs();
    if (this.CurrentPageIndex < this.PageCount - 1)
    {
      this.CurrentPageIndex += 1;
      ee.CurrentPageIndex = this.CurrentPageIndex;
      ee.PageCount = this.PageCount;
      ee.PageSize = this.PageSize;
      this.OnPageIndexChanged(ee);
    }
    handled = true;
}

/// <summary>
/// </summary>
protected new void OnPageIndexChanged(GridPageChangedEventArgs e)
{
  GridPageChangedEventHandler handler1 = (GridPageChangedEventHandler)base. Events[Grid.EventPageIndexChanged];
  if (handler1 != null)
  {
    handler1(this, e);
  }
}

protected void Grid1_PageIndexChanged(object source, GridPageChangedEventArgs e)
{
  //… … 
}

protected void Grid1_PageIndexChanged(object source, EventArgs e)
{
  //… … 
}