private void lnkbtnPrevious_Click(object sender, EventArgs e)
{
PageIndex -= 1;
if (PageIndex <= 0)
{
PageIndex = 1;
}
//实例化自定义扩展类PageIndexChangedEventArgs
pce = new PageIndexChangedEventArgs(this.PageIndex);
OnNewOnPageIndexChanged(pce);
Bind();
}
/// <summary>
/// 截取键盘Enter（回车）事件，跳转到某页
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void nudPageIndex_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)13)
{
this.PageIndex = Convert.ToInt32(nudPageIndex.Value);
pce = new PageIndexChangedEventArgs(this.PageIndex);
OnNewOnPageIndexChanged(pce);
Bind();
}
}
private void lnkbtnNext_Click(object sender, EventArgs e)
{
this.PageIndex += 1;
if (PageIndex > PageCount)
{
PageIndex = PageCount;
}
//实例化自定义扩展类PageIndexChangedEventArgs
pce = new PageIndexChangedEventArgs(this.PageIndex);
OnNewOnPageIndexChanged(pce);
Bind();
}
private void lnkbtnFirst_Click(object sender, EventArgs e)
{
PageIndex = 1;
//实例化自定义扩展类PageIndexChangedEventArgs
pce = new PageIndexChangedEventArgs(this.PageIndex);
OnNewOnPageIndexChanged(pce);
Bind();
}
/// <summary>
/// 页码下拉框选中项发生改变时引发的事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cbxPageSize_SelectedIndexChanged(object sender, EventArgs e)
{
////DHGateAssistantConfig.Instance.PageSize = this.PageSize;
////DHGateAssistantConfig.Instance.Save();
PageIndex = 1;
//实例化自定义扩展类PageIndexChangedEventArgs
pce = new PageIndexChangedEventArgs(this.PageIndex);
OnNewOnPageIndexChanged(pce);
Bind();
if (this.OnPageSizeChanged != null)
OnPageSizeChanged(this, e);
}
private void btnGo_Click(object sender, EventArgs e)
{
this.PageIndex = Convert.ToInt32(nudPageIndex.Value);
pce = new PageIndexChangedEventArgs(this.PageIndex);
OnNewOnPageIndexChanged(pce);
Bind();
}
/// <summary>
/// 声明负责引发事件的方法
/// </summary>
/// <param name="e"></param>
protected virtual void OnNewOnPageIndexChanged(PageIndexChangedEventArgs e)
{
//处于线程安全的考虑，现将委托字段的引用复制到一个临时字段中
EventHandler<PageIndexChangedEventArgs> args =
Interlocked.CompareExchange(ref OnPageIndexChanged, null, null);
//任何方法登记了对我们事件的关注，就通知他们
if (args != null)
{
args(this, e);
}
}