c# - Fixed header sort columns -


i have gridview need have headers fixed , each column sortable. using asp.net , c#.

i found code can't columns sort @ all. have stepped thru code , calling sort functions in aspx file. when clicked sort buttons on column headings, display in grid not change (ascending/descending) sort order. thinking has binding of gridview data.

here original code.

my version below: default.aspx is: header copied original code. 

<head runat="server"> <title>create xml files</title> <script src="/scripts/jquery-1.3.2.min.js" type="text/javascript"></script> <script src="/scripts/jquery.tablesorter.min.js" type="text/javascript"></script> <script type = "text/javascript">  $(document).ready(function() {         $("#<%=gridview1.clientid%>").tablesorter();         setdefaultsortorder();     });      function sort(cell, sortorder) {         var sorting = [[cell.cellindex, sortorder]];         $("#<%=gridview1.clientid%>").trigger("sorton", [sorting]);         if (sortorder == 0) {             sortorder = 1;             cell.classname = "sortdesc";         }         else {             sortorder = 0;             cell.classname = "sortasc";         }         cell.setattribute("onclick", "sort(this, " + sortorder + ")");         cell.onclick = function() { sort(this, sortorder); };         document.getelementbyid("container").scrolltop = 0;     }       function setdefaultsortorder() {         var gvheader = document.getelementbyid("dummyheader");         var headers = gvheader.getelementsbytagname("th");         (var = 0; < headers.length; i++) {             headers[i].setattribute("onclick", "sort(this, 1)");             headers[i].onclick = function() { sort(this, 1); };             headers[i].classname = "sortdesc";         }     } </script>  <style type = "text/css"> .sortasc {     background-image: url(images/asc.gif);     background-repeat: no-repeat;     background-position: center right;     cursor: pointer;     width:200px; } .sortdesc {     background-image: url(images/desc.gif);     background-repeat: no-repeat;     background-position: center right;     cursor: pointer;     width:200px; } .grid thead {      background-color:purple;      color:white; }     .style1     {         width: 113px;     }     .style2     {         width: 152px;     } </style>

this gridview part...

<div style =" background-color:purple; height:30px;width:417px; margin:0;padding:0"> <table cellspacing="0" cellpadding = "0" rules="all" border="1" id="dummyheader"  style="font-family:arial;font-size:10pt;width:417px;color:white; border-collapse:collapse;height:100%;"> <tr>     <th scope="col" style ="width:48px;text-align:center">number</th>     <th scope="col" style ="width:50px;text-align:center">district</th> </tr> </table> </div>  <div id = "container" style ="height:186px; width:435px; overflow:auto;"> <asp:gridview id="gridview1" runat="server" showheader="false" allowsorting="true"      autogeneratecolumns="false" cssclass = "grid" cellpadding="3" forecolor="white"      gridlines="none" height="69px" width="417px" backcolor="white"          bordercolor="white" borderstyle="ridge" borderwidth="2px" cellspacing="1"          style="margin-bottom: 0px">      <rowstyle backcolor="#dedfde" forecolor="black" />     <columns>         <asp:boundfield datafield="number" headertext = "number" >             <itemstyle width="50px" />         </asp:boundfield>         <asp:boundfield datafield="district" headertext = "district" >             <itemstyle width="50px" />         </asp:boundfield>     </columns>     <footerstyle backcolor="#c6c3c6" forecolor="black" />     <pagerstyle backcolor="#c6c3c6" forecolor="black" horizontalalign="right" />     <selectedrowstyle backcolor="#9471de" font-bold="true" forecolor="white" />     <headerstyle backcolor="#4a3c8c" font-bold="true" forecolor="#e7e7ff" /> </asp:gridview> </div>

i create datatable , bind gridview:

//create data table stationtable = new datatable(); stationtable.columns.add(new datacolumn("number", typeof(int))); stationtable.columns.add(new datacolumn("district", typeof(string)));  var query = stations in xml.elements("config").elements("distributedhost").elements("station")                           select new                          {                                number = stations.element("number").value,                             district = stations.element("district").value                          } ;              foreach (var row in query)             {                 datarow datarow = stationtable.newrow();                  datarow[stationtable.columns["number"]] = row.number;                 datarow[stationtable.columns["district"]] = row.district;                  stationtable.rows.add(datarow);             }             gridview1.datasource = stationtable;             gridview1.databind();

it may use new static client id´s controls (seems default in visual studio 2012). try

$(document).ready(function() {     $("#gridview1").tablesorter();     setdefaultsortorder(); });

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