ASP.NET (snapshot 2017) Microsoft documentation and samples

Modifying Animations From The Server Side (VB)

The Animation control in the ASP.NET AJAX Control Toolkit is not just a control but a whole framework to add animations to a control. The animations may also be changed on the server-side

Overview

The Animation control in the ASP.NET AJAX Control Toolkit is not just a control but a whole framework to add animations to a control. The animations may also be changed on the server-side

Steps

First of all, include the ScriptManager in the page; then, the ASP.NET AJAX library is loaded, making it possible to use the Control Toolkit:

[!code-aspxMain]

   1:  <asp:ScriptManager ID="asm" runat="server" />

The animation will be applied to a panel of text which looks like this:

[!code-aspxMain]

   1:  <asp:Panel ID="panelShadow" runat="server" CssClass="panelClass">

   2:   ASP.NET AJAX is a free framework for quickly creating a new generation of more

   3:   efficient, more interactive and highly-personalized Web experiences that work

   4:   across all the most popular browsers.<br />

   5:   ASP.NET AJAX is a free framework for quickly creating a new generation of more

   6:   efficient, more interactive and highly-personalized Web experiences that work

   7:   across all the most popular browsers.<br />

   8:   ASP.NET AJAX is a free framework for quickly creating a new generation of more

   9:   efficient, more interactive and highly-personalized Web experiences that work

  10:   across all the most popular browsers.<br />

  11:  </asp:Panel>

In the associated CSS class for the panel, define a nice background color and also set a fixed width for the panel:

[!code-cssMain]

   1:  <style type="text/css">

   2:   .panelClass {background-color: lime; width: 300px;}

   3:  </style>

The rest of the code runs on the server-side and does not use markup; instead, it uses code to create the AnimationExtender control:

[!code-aspxMain]

   1:  <script runat="server">

   2:  Sub Page_Load()

   3:   Dim ae As New AjaxControlToolkit.AnimationExtender()

   4:   ae.TargetControlID = "Panel1"

However, the Control Toolkit currently does not provide an API access to create the individual animations. It is however possible to set the AnimationExtender’s Animations property to a string containing the XML markup used when assigning the animations declaratively. In order to create the XML which must not contain the <Animations> element you could use the .NET Framework’s XML support or, as in the following code, just provide the string:

[!code-vbMain]

   1:  ae.Animations = "<OnLoad><Parallel><FadeOut Duration=""1.5""

   2:   Fps=""24"" /><Resize Width=""1000""

   3:   Height=""150"" Unit=""px"" /></Parallel></OnLoad>"

Finally, add the AnimationExtender control to the current page, within the <form runat="server"> element, making sure that the animation is included and runs:

[!code-vbMain]

   1:  form1.Controls.Add(ae)

   2:  End Sub

   3:  </script>

The animation is created using server-side C#/VB code (Click to view full-size image)

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