ASP: repeater nesting

An online examination system was developed. During the examination, repeater was used to repeatedly read the questions displayed on the page. During the multiple-choice question processing, the database was designed to be a little troublesome. I stored the question stem and options in two separate tables, so that only one repeater could not be used for reading when the page is displayed, all are nested.CodeEntry:

<Div id = "  Divsubjectofsingleselectionlist  " Style = "  Text-align: left;  " > <Div style = "  Color: red; text-align: left  " > Tip: case-insensitive letters </Div> <asp: repeater id = "  Rptcategories  " Runat = "  Server  " Onitemdatabound = "  Rptcategories_itemdatabound1  " > <Headertemplate> <Table width = "  100%  " Border = " 0  " Cellspacing = "  0  " Cellpadding = "  0  " > </Headertemplate> <itemtemplate> <! -- Stem --> <tr> <TD> <B> (<% # container. itemindex + 1 %>) <% # Databinder. eval (container. dataitem, " Topic  " ) %> (< ASP: textbox ID = "  Txtsingleselectionanswer  " Runat = "  Server  " Borderwidth = "  0  " Width = "  20px  " Maxlength = "  1  " TEXT = '  <% # Databinder. eval (container. dataitem, "rowone") %>  ' > </ASP: textbox> ) </B> <asp: hiddenfield id = "  Hidsingleselectionid  " Runat = "  Server  " Value = '  <% # Eval ("ID") %>  ' > </ASP: hiddenfield> </TD> </tr> <! -- Option --> <asp: repeater id = "  Rptproduct  " Runat = "  Server  " > <Itemtemplate> <tr> <TD> & nbsp ;& Nbsp; <% # Databinder. eval (container. dataitem, "  Selectabcde  " ) %> & Nbsp ;& Nbsp; <% # Databinder. eval (container. dataitem, "  Option  " ) %> </TD> </tr> </itemtemplate> </ASP: repeater> </itemtemplate> <footertemplate> </table> </footertemplate> </ASP: repeater> </div>

Everyone knows: <Itemtemplate> here is the content to be displayed cyclically </itemtemplate>

<Footertemplate> the end part </footertemplate>

In itemtemplate, I can only insert the option under each question in a loop, so here I put an ASP: repeater, query the question stem Based on the ID of the question stem stored in the hidden domain hiddenfield under each question stem, and rebind the question stem. In addition, the outer ASP: repeater adds an onitemdatabound = "rptcategories_itemdatabound1" attribute to trigger the option binding. The background code is as follows:

  Protected   Void Page_load ( Object  Sender, eventargs e ){  If (! Ispostback) {bindtestinfo ();  // Bind basic exam information
 Bindrepeater (); // Bind question stem  
}}  Private  Void  Bindrepeater () {testlistbll = New  Testlistbll ();  String Id = request. querystring [ "  ID  " ]; //  Exam ID Datatable = Testlistbll. getinformations (ID); lblsingleselectioncount. Text = Datatable. Rows. Count. tostring (); rptcategories. datasource =Datatable; rptcategories. databind (); // bind a single-choice question
Datatable dtmore = Testlistbll. getinformationsmore (ID); label2.text = Dtmore. Rows. Count. tostring (); rptsubjectofmultiselectionlist. datasource = Dtmore; rptsubjectofmultiselectionlist. databind (); // bind multiple choice questions
Allcount. Text = (Datatable. Rows. Count + Dtmore. Rows. Count). tostring ();}  //  Bind options under question stem      Protected   Void Rptcategories_itemdatabound1 (Object  Sender, repeateritemeventargs e) {testlistbll = New  Testlistbll ();  If (E. Item. itemtype = listitemtype. Item | E. Item. itemtype = Listitemtype. alternatingitem) {repeater rep = E. Item. findcontrol ( "  Rptproduct  " ) As Repeater; //  Find the repeater object in the layer Datarowview rowv = (datarowview) E. Item. dataitem; //  Locate the data item associated with the category Repeater              String Typeid = rowv [ "  ID  " ]. Tostring (); //  Obtains the ID of the fill subclass. Datatable dt = Testlistbll. getoptions (typeid); rep. datasource = DT; rep. databind ();}} 

If (E. Item. itemtype = listitemtype. Item | E. Item. itemtype = listitemtype. alternatingitem) {} this judgment is indispensable. Remember that if it is not added, it cannot be bound.

Effect: