ASP.NET AJAX ModelPopupExtender From Client Side

Davin Martyn
12y
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Article

Introduction

Ajax (Asynchronous JavaScript and XML) is new web development technique used for interactive websites. With AJAX help we can develop web applications and retrieve small amounts of data from a web server. AJAX consists of a different type of technology.

JavaScript
XML
Asynchronous Call to the server

In this article, I will show how we can use a ModelPopupExtender control with client side behavior so that when the user performs any action in the dialog box, such as a button click, there is no post back to the server.

Step 1 : Open Visual Studio 2010

Go to File->New->WebSite
Select ASP.NET Empty WebSite

Step 2 : Go to Solution Explorer and right-click.

Select Add->New Item
Select WebForm
Default.aspx page open

Step 3 : Go to Default.aspx page and click on the [Design] option and drag control from Toolbox.

Drag ScriptManager contro, Label,Button

Step 4 : Go to Default.aspx [Source] option and define ContentTemplate.

Code

Step 5 : We create a Panel inside the Update Panel which will be used as a popup window by the ModelPopupExtender control.

Code

<asp:Panel ID="Panel1" runat="server" BackColor="#ffffff"
BorderColor="#dadada" BorderStyle="Solid" BorderWidth="4px"
Height="190px" Width="350px" Font-Names="Arial" Font-Size="10pt">

Step 6 : Go to the Default.aspx page [Design] option and click on UpdatePanel Control.

Select Properties option and define ClientMode "Inherit"

Step 7 : We will define CSS for the BackgroundCssClass.

Code

<style type="text/css">
    .BackgroundStyle
    {
       background-color: Gray;
       filter: alpha(opacity=30);
       opacity: 0.5;
    }
</style>

Step 8 : Go to the Toolbox option and drag a ModelPopupExtender control.

Step 9 : Go to the Default.aspx[Source] page option and define all ModelPopupExtender property.

Code :

<asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="Button1" PopupControlID="Panel1" DropShadow="True" CancelControlID="Button3" OkControlID="Button2" OnOkScript="OkButtonClick()" BackgroundCssClass="BackgroundStyle
</asp:ModalPopupExtender>

Define JavaScript Function

Step 10 : Go to the Default.aspx page and define a JavaScript function.

Code

<script type="text/javascript">
      var language = "";
      function SetLanguage(value) {
          language = value;
      }
      function OkButtonClick() {
          $get("Label1").innerHTML = language;
      }

Step 11 : Now go to the Default.aspx page option and write some code.

Code

<title> my ajax application</title>
    <style type="text/css">
    .BackgroundStyle
    {
       background-color:gray;
       filter: alpha(opacity=30);
       opacity: 0.5;
    }
</style>
<script type="text/javascript">
      var language = "";
      function SetLanguage(value) {
          language = value;
      }
      function OkButtonClick() {
          $get("Label1").innerHTML = language;
      }
</script>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
   <div style="background-color: #EAAA7B">
       <asp:UpdatePanel ID="UpdatePanel1" runat="server">
      <ContentTemplate>
   <asp:Button ID="Button1" runat="server" Text="button" />
   <br />
   <asp:Label ID="Label1" runat="server"></asp:Label>
   <asp:Panel ID="Panel1" runat="server" BackColor="#ffffff"
   BorderColor="#dadada" BorderStyle="Solid" BorderWidth="4px"
   Height="190px" Width="350px" Font-Names="Arial" Font-Size="10pt">
   </ContentTemplate>
   <table cellpadding="10" cellspacing="0" style="width: 100%">
      <tr>
         <td style="background-color: #D5D1AC">
             Select Favorite Programming Language?
         </td>
      </tr>
      <tr>|
         <td style="background-color: #A9D6D0">
            <input name="rdLanguage" type="radio" value="Java"
               onclick="SetLanguage('Java');" />
             java<br />
             <input name="rdLanguage" type="radio" value="ASP.NET"
               onclick="SetLanguage('ASP.NET');" />
             ASP.NET
            <br />
            <input name="rdLanguage" type="radio" value="C#"
               onclick="SetLanguage('C#');" />C#
              <br />
                <input name="rdLanguage" type="radio" value="C"
               onclick="SetLanguage('C');" /> C|
               <br />
                <input name="rdLanguage" type="radio" value="C++"
               onclick="SetLanguage('C++');" /> C++
            <br />
         </td>
      </tr>
      <tr>
         <td style="background-color: #DFEA95">
            <asp:Button ID="Button2" runat="server" Text="Submit" />
            <asp:Button ID="Button3" runat="server" Text="Cancel" />
         </td>
      </tr>
      </table>
      </asp:Panel>
       <asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="Button1" PopupControlID="Panel1"   DropShadow="True" CancelControlID="Button3" OkControlID="Button2" OnOkScript="OkButtonClick()" BackgroundCssClass="BackgroundStyle"
       </asp:ModalPopupExtender>
       </div>