我有一个GridView设置如下：
>绑定到列表< T>在代码隐藏(我使用我自己的定制BOL)
>在HTML页面上没有DataSource对象
>可以在我选择的每一列上排序(SortExpressions都设置正确)
但是,我收到以下错误消息：
The GridView ‘myGridView’ fired event Sorting which wasn’t handled.
什么是我最好的方法来获得我的List< T>允许排序？
OnSorting = "MySortingMethod"
解决方法
感谢您的分类答案.我转向LINQ帮助动态排序.由于网格知道是否对ASC或DESC进行排序,哪个字段使用LINQ表达式.表达式执行排序,然后我简单地将这些结果绑定到我的gridview.
我怀疑jQuery方法会更快,不需要完整的回发.
using System.Linq.Expressions;
public SortDirection GridViewSortDirection
{
get
{
if (ViewState["sortDirection"] == null)
ViewState["sortDirection"] = SortDirection.Ascending;
return (SortDirection)ViewState["sortDirection"];
}
set { ViewState["sortDirection"] = value; }
}
protected void gridView_Sorting(object sender,GridViewSortEventArgs e)
{
//re-run the query,use linq to sort the objects based on the arg.
//perform a search using the constraints given
//you could have this saved in Session,rather than requerying your datastore
List<T> myGridResults = PerfomSearch();
if (myGridResults != null)
{
var param = Expression.Parameter(typeof(T),e.SortExpression);
var sortExpression = Expression.Lambda<Func<T,object>>(Expression.Convert(Expression.Property(param,e.SortExpression),typeof(object)),param);
if (GridViewSortDirection == SortDirection.Ascending)
{
myGridView.DataSource = myGridResults.AsQueryable<T>().OrderBy(sortExpression);
GridViewSortDirection = SortDirection.Descending;
}
else
{
myGridView.DataSource = myGridResults.AsQueryable<T>().OrderByDescending(sortExpression);
GridViewSortDirection = SortDirection.Ascending;
};
myGridView.DataBind();
}
}
