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In the view: Define the method in the event  OnSelectedIndexChanged Add the tag  AutoPostBack="true" <asp:TemplateField HeaderText="Competence Domain">        <ItemTemplate>                 <asp:DropDownList ID="ddlCompDomain" runat="server" AppendDataBoundItems="true" AutoPostBack="true" OnSelectedIndexChanged="ddlCompDomain_SelectedIndexChanged">                 </asp:DropDownList>         </ItemTemplate> </asp:TemplateField> In the code inside the method  ddlCompDomain_SelectedIndexChanged : Cast the  sender  object to the element you wanted to know the index, for our case a  DropDownList From the  DropDownList  get the  GridViewRow  through the parent property Get the index with  RowIndex protected void ddlCompDomain_SelectedIndexChanged(object sender , EventArgs e) ...

AJAX (Asynchronous JavaScript Xml) This is the method to invoke ajax $.ajax({         url: "my_data.xml" ,       // URL of you want to GET via AJAX     cache: false,     dataType: " xml ",            //  data  - The  data  return from the Ajax call     success: function(xml_reader){        // Run this function is the method ajax is  successful         $(xml).find("runner").each(function() {   var info = '<li>Name: ' + $(this).find("fname").text() + ' ' + $(this).find("lname").text() + '</li>';  if( $(this).find("gender").text() == "m" ){ $('#finishers_m').append( info ); }else if ( $(this).find("gender").text() == "f" ){ $('#finishers_f').append( info ); }   $('#finishers_all').append( info ); });                      } }); A...

Declare Objects You can create objects using JavaScript, also you can assign this object to a variable. function object (param1, param2){  this.param   = param1;  this. param2 = param2;   my_function: function(){      } } var my_object = object(1, 2); Properties To access the properties use object.property Ej:  var name =   object . param2 ; Using JSON the syntax is     object [' param2 '] Arrays The arrays can be created with the following sintax var  array  = new Array(); var  array  = new Array('obj1', 'obj2', 'obj3'); var  array  = ['obj1', 'obj2', 'obj3']; Functions $.inArray get the index where is the element. var element_index = $.inArray('value', array ); Window object Each time a tab is open a window object is created. Methods window. onFocus - tells when a tab is activated. window. onBlur - detects when the tab lose the focus. Functions window. setTimeout ( function(){}, 400) - Wait the define...

Method Listener There are two ways to bind events to elements Case 1:  $("my_element"). click (  function () { }  ); Case 2:  $("my_element").bind(' click ', function () { }   ); Unbind method The function .unbind remove the mehod pass as paramenter.  Also the function .each iterate in all the elements from the element selector. $("div.guess_box") .each ( function(){ $(this) .unbind  ('click'); }); Functions There are two ways to declare a function Function declaration function nameFunction () {    //Code } Function variable var  nameFunction =  function () {    //Code } Anonymous Function Is when inside another function you declare your own function. In this case $(this).unbind('click'); is the anonymous function. $("div.guess_box").each( function(){ $(this).unbind('click'); }); Contains Function Compate inside this if have the element with Id "has_discount" if ($.contains( this  , docum...

Function $( ) is the shortcut of jquery( ) Syntaxis :    $( "Selector Element" ).Method(); $( "Selector Element" ).Method( Function( ){  } ); JQuery select elements as CSS h1 -> Element selector .h1 { color: red}    ->  Css Class select a grouping of elements #my_h1 { color: #3300FF; } -> Id Selector, only affects one element Example 1 $("span. Italian ").toggle(); <span class=" Italian ">Nel Mezzo del cammin di  nostra vita</span>  <span class="English">In the middle of this road  called "our life"</span>     <span class=" Italian ">mi ritrovai per una selva  oscura</span> Example 2 $("p #mytext ").show(); <p id=" mytext ">One morning, when Gregor Samsa  woke from troubled dreams . . .  </p>  <p id=" mytext ">he found himself transformed in  his bed into a horrible vermin.</p>  <p>He lay on his armour-like back...

What do Prototypes Prototype? Feel - What might it look like? Implementation - What might it work like? Role - What might the experience be like? The best way to have a good idea is to have lots of ideas.    - Linus Pauling Biggest changes at early stages. Evaluating Designs Labs Surveys Feedback from Experts Comparatives Experiments Participant Observation Simulation Users Estreme Users Users seldom use it

Presentation Operation Contract Data Contract Implementation  -> svc.cs RN Business Rules Data  Data Access Layer (DAL) Entities Class Data Repository Data Methods