C#系统事件功能触发--按钮点击事件

< 示例一：提供NavigatorButtonClickEventArgs得到完整的NavigatorButtonBase按钮基类>
DataNavigator是一个进度条控件

ShowEvent(NavigatorButton);
发现：
1）public NavigatorButtonClickEventArgs(NavigatorButtonBase button);
2）public NavigatorButtonBase Button { get; }//说明是属性
3）public bool Handled { get; set; }//也是属性
通过解释我们可以发现
给1）一个按钮可以得到他的NavigatorButtonClickEventArgs
2、3）一个NavigatorButtonClickEventArgs可以得到他的属性2）返回按钮，3）返回事件是否解决

一些供学习的元数据：
 //NavigatorButton的Click事件
 // 摘要:
 // Provides data for the DevExpress.XtraEditors.NavigatorBase.ButtonClick event.
    public class NavigatorButtonClickEventArgs : EventArgs
    {
        //
        // 摘要:
        //     Initializes a new instance of the DevExpress.XtraEditors.NavigatorButtonClickEventArgs
        //     class.
        //
        // 参数:
        //   button:
        //     A DevExpress.XtraEditors.NavigatorButtonsBase descendant which represents the
        //     button clicked. This value is assigned to the DevExpress.XtraEditors.NavigatorButtonClickEventArgs.Button
        //     property.
        public NavigatorButtonClickEventArgs(NavigatorButtonBase button);
        //
        // 摘要:
        //     Gets the clicked button.
        public NavigatorButtonBase Button { get; }//说明是属性
        //
        // 摘要:
        //     Gets or sets whether you have handled this event and no default action is required.
        public bool Handled { get; set; }
    }

所以可以解决了showEvent为什么可以写进ButtonClick事件就是给点击事件e可以得到e的按钮
showEvent（NavigatorButtonBase）

//点击进度条事件改变treelist中显示的树
private void dataNavigator1_ButtonClick(object sender,NavigatorButtonClickEventArgs e)
{
   ShowEvent(e.Button);
}
private void ShowEvent(NavigatorButtonBase button)
{
   NavigatorCustomButton btn = (NavigatorCustomButton)button;
   string type = btn.Tag.ToString();
   if (type == "首页")
   {
      pageIndex = 1;//pageIndex改变
   }
   if (type == "下一页")
   {
      pageIndex++;
   }
   if (type == "末页")
   {
      pageIndex = pageCount;
   }
   if (type == "上一页")
   {
      pageIndex--;
   }
   showPage(pageIndex);//其他方法，分页操作。
}

<示例二：可以让主窗体的保存按钮同步子窗体按钮的点击事件>
同样给ItemClickEventArgs就能够得到点击的按钮和按钮的link

 //
 // 摘要:
 //     Provides data for the DevExpress.XtraBars.BarItem.ItemClick and DevExpress.XtraBars.BarManager.ItemClick
 //     events.
    public class ItemClickEventArgs : EventArgs
    {
        //
        // 摘要:
        //     Initializes a new DevExpress.XtraBars.ItemClickEventArgs class instance.
        // 参数:
        //   item:
        //     A DevExpress.XtraBars.BarItem class instance whose link was clicked.
        //   link:
        //     The clicked DevExpress.XtraBars.BarItemLink.
        public ItemClickEventArgs(BarItem item, BarItemLink link);
        //
        // 摘要:
        //     Gets the DevExpress.XtraBars.BarItem whose link was clicked.
        public BarItem Item { get; }
        //
        // 摘要:
        //     Gets the clicked DevExpress.XtraBars.BarItemLink.
        public BarItemLink Link { get; }
    }

//保存xml文件按钮
private void barButtonItem5_ItemClick(object sender, ItemClickEventArgs e)
{
    btn_SaveClick(e.Item);
}
/// <summary>
/// 提供一个公有的方法供拥有相同作用的按钮点击使用
/// </summary>
/// <param name="button">Bar栏的控件</param>
public void btn_SaveClick(BarItem button)
{
   BarItem btn = (BarItem)button;
   this.treeList2.OptionsBehavior.Editable = false;
   SaveFileDialog s = SaveFile("Xml文件(*.xml)|*.xml");
   if (s.ShowDialog() == DialogResult.OK)
   {
     string XmlString = "";
     XmlString += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
     XmlString += testnode;
     XmlDocument xmldoc = new XmlDocument(); //创建空的XML文档 
     xmldoc.LoadXml(XmlString);
     string fileName = s.FileName;
     xmldoc.Save(fileName);
     XtraMessageBox.Show("保存成功");
   }
   else
   { XtraMessageBox.Show("取消操作"); }
}