DataPager控件以实现分页功能

思路实现传统的分页功能，即从服务端获取到分页的记录集，再得到符合条件的记录集总数，然后构造一个数据集合，该数据集合数量等于查询结果总数并将其绑定到datapager控件，并且将得到的分页结果绑定到datagrid。当页面pageindex变换时，引发事件从服务端获取相应pageindex的记录集。在具体实现过程中，可以将datagrid和datapager控件封装成一个分页控件

customdatapager : datapager
{
     private dependencyproperty m_pageindex = dependencyproperty.register("pagecount", typeof(int), typeof(customdatapager), new propertymetadata(propertychangedcallbackhandler));

     public new int pagecount
     {
      get
         {
             return (int)this.pageindex + 1;
         }
         set
         {
             this.setvalue(m_pageindex, value);
         }
     }

     private static void propertychangedcallbackhandler(dependencyobject d, dependencypropertychangedeventargs e)
     {
        customdatapager customdatagrid = d as customdatapager;
         if (customdatagrid != null)
       {
             list list = new list;();
             int recordcount = (int)e.newvalue;
             for (int i = 0; i < recordcount; i++)
             {
              list.add(i);
             }

             pagedcollectionview pagedcollectionview = new pagedcollectionview(list);
             customdatagrid.source = pagedcollectionview;
         }
     }

然后在自定义的datagrid中调用即可：

private void binddatasource()
{
     list datacollection = new list();
     for (int i = 0; i < 1000; i++)
     {
        datacollection.add(i.tostring());
     }

     pagedcollectionview pagedcollectionview = new pagedcollectionview(datacollection);
     dgresult.itemssource = pagedcollectionview;
     dpresult.pagecount = datacollection.count;
}