datagrid|webdgCategory是用于显示类别表的DataGrid


自动分页：AllowPaging= TRUE!!!!






private void dgCategory_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)





{





dgCategory.CurrentPageIndex=e.NewPageIndex;





dgCategory.DataBind();





}






排序：默认按“PKId”排序





private void dgCategory_SortCommand(object source, System.Web.UI.WebControls.DataGridSortCommandEventArgs e)





{





string SortOrder=e.SortExpression.ToString();





BindData(SortOrder);





}












private void BindData(string SortOrder)





{





ProductSystem productSys=new ProductSystem();//底层数据接口





CategoryData categorySet=productSys.GetCategories(1); //底层数据接口，返回ID为1的Category

DataView categoryView=categorySet.Tables[CategoryData.CATEGORIES_TABLE].DefaultView;





categoryView.Sort=SortOrder;











lblTitle.Text="按"+SortOrder+"排序";





dgCategory.DataSource=categoryView;





dgCategory.DataBind();





}





private void Page_Load(object sender, System.EventArgs e)





{





BindData("PKId");





}





编辑，更新，取消：





private void dgCategory_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)





{





dgCategory.EditItemIndex=e.Item.ItemIndex;





BindData("PKId");





}





private void dgCategory_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)





{





dgCategory.EditItemIndex=-1;





BindData("PKId");





}





private void dgCategory_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)





{





string strUpdate="";





strUpdate+="PKId='"+((TextBox)e.Item.Cells[1].Controls[0]).Text+"'";





strUpdate+="ParentId='"+((TextBox)e.Item.Cells[2].Controls[0]).Text+"'";





strUpdate+="Description='"+((TextBox)e.Item.Cells[3].Controls[0]).Text+"'";





strUpdate+="IsLeaf='"+((TextBox)e.Item.Cells[4].Controls[0]).Text+"'";












try





{





CagegorySet.ExecuteUpdate(strUpdate);//需要后台提供更新的接口





dgCategory.EditItemIndex=-1;





}





catch





{





Response.Write("<script language='javascript'>alert('未能完成更新，请…………')</script>");





}





BindData("PKId");





}





private void dgCategory_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)





{





//获得关键字,使用DataKeys集合访问数据列表控件中每个记录的键值（显示为一行）





//使得用户可以存储键字段而无需在控件中显示它





string PKId=dgCategory.DataKeys[e.Item.ItemIndex];





CategorySet.ExecuteDelete(PKId);





}*/