Use the onselectedindexchanged event of dropdownlist in the gridview

 

Today, we encountered the onselectedindexchanged event using dropdownlist in the gridview. In this summary, it is convenient for Boyou to refer.

Front-endCode:

<Asp: templatefield headertext = "  Score  " Itemstyle-horizontalalign = "  Center  " > <Itemtemplate> <asp: dropdownlist id = "  Gradelist  " Runat = " Server  " Width = "  100px  " Onselectedindexchanged = "  Dd_selectedindexchanged  "  Autopostback = "  True  " > <Asp: listitem> </ASP: listitem> <asp: listitem> 0 </ASP: listitem> <asp: listitem> 10 </ASP: listitem> <asp: listitem> 20 </ASP: listitem> <asp: listitem> 30 </ASP: listitem> <asp: listitem> 40 </ASP: listitem> <asp: listitem> 50 </ASP: listitem> <asp: listitem> 60 </ASP: listitem> <asp: listitem>70 </ASP: listitem> <asp: listitem> 80 </ASP: listitem> <asp: listitem> 90 </ASP: listitem> <asp: listitem> 100 </ASP: listitem> </ASP: dropdownlist> </itemtemplate> </ASP: templatefield>

Background onselectedindexchanged event:

 ///   <Summary>      ///  Rating  ///  </Summary>      ///   <Param name = "sender"> </param>      ///   <Param name = "E"> </param>      Protected   Void Dd_selectedindexchanged ( Object  Sender, eventargs e) {gridviewrow gvr = (Gridviewrow) (Control) sender). Parent. parent; dropdownlist DDL = (Dropdownlist) sender; //  Obtain the dropdownlist1 control in gridview1. //  You can also write it like this.  //  Gridviewrow ROW = (gridviewrow) DDL. Parent. parent;  //  Gridviewrow row1 = (gridviewrow) DDL. namingcontainer;  //  Use the DDL control to find the row  //  Int AA = convert. toint32 (row1.rowindex. tostring ());  //  Obtain rowindex of a row Querybuilder QB = New Querybuilder (); QB. addfilter (  "  Mis_gradeinfo.sf_userid  " , Webcommon. SQL _equal, gvr. cells [ 0  ]. Text); QB. addfilter (  "  Mis_gradeinfo.df_week  " , Webcommon. SQL _equal, gvr. cells [ 2  ]. Text); ilist <Mis_gradeinfomodel> mis_gradeinfomodel = Bll. getmis_gradeinfomodelbycondition (QB ); If (Mis_gradeinfomodel.count> 0  ) {Model = Mis_gradeinfomodel [ 0  ]; Model. df_userid = Usernum. value; model. df_username = Username. Text; model. gradenum = DDL. selectedvalue. tostring (); //  Obtain the selected value Model. df_flag = 1 ; //  Indicates the score ID. Model. df_date = Datetime. Now. to1_datestring (); Model. up_df_date = Datetime. Now. tow.datestring (); BLL. update_mis_gradeinfo (model );}}