□在.Net中DataGrid虽然有排序的...... 在.Net 中 DataGrid 虽然有排序的功能,但并不支持双向的排序。用到了,看了些相关的帖子,自己尝试了一种方法,竟然也行得通,主要是用DataGrid.Attributes 存了一个参数,同时在onSortCommand中修改了DataGridColumn的SortExpression. 代码如下: private void BindData() { DataTable dt = .......; if(dt != null) { DataView dv = dt.DefaultView; if(DataGrid1.Attributes["SortBy"] != null) { dv.Sort = DataGrid1.Attributes["SortBy"]; } DataGrid1.DataSource = dv; DataGrid1.DataBind(); } } private void DataGridSort(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e) { DataGrid1.Attributes["SortBy"] = sortstr; this.BindData(); //找到排序的列,并修改把它的排序属性 DataGridColumn clm = null; for(int i=0;i if(DataGrid1.Columns[i].SortExpression == e.SortExpression ) { clm = DataGrid1.Columns[i]; break; } } if(clm == null) return; if(e.SortExpression.ToLower().IndexOf("desc") > 0) { clm.SortExpression = e.SortExpression.ToLower().Replace("desc","asc"); } else { if(e.SortExpression.ToLower().IndexOf("asc") > 0) { clm.SortExpression = e.SortExpression.ToLower().Replace("asc","desc"); } else { clm.SortExpression = e.SortExpression.ToLower() + " desc"; } } } |
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