ASP.NET Ajax UpdateProgress

The UpdateProgress control in ASP.NET plays a crucial role in providing status information regarding the progress of downloads that take place during partial-page rendering within an UpdatePanel. It offers the flexibility to include multiple UpdateProgress controls on a single page, with each control capable of being associated with a distinct UpdatePanel control. Alternatively, a single UpdateProgress control can be employed and associated with all UpdatePanel controls present on the page. The placement of the UpdateProgress control can be either inside or outside the UpdatePanel controls, depending on specific requirements.

UpdateProgress control

To illustrate the functionality of the UpdateProgress control, consider the following Asp.Net program. In this example, an UpdateProgress control is utilized to effectively manage the waiting period until the completion of a task. During this waiting time, a visually engaging .gif file is displayed as a waiting message to the user.

ajax

By incorporating the UpdateProgress control within an UpdatePanel, you can effectively communicate the progress of a task to the user. During the waiting period, the specified .gif file serves as a visual indicator, conveying the message that the operation is underway.

Default.aspx
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdateProgress ID="UpdateProgress1" runat="server"> <ProgressTemplate> <img alt="ajax-progress" src="https://net-informations.com/asp/ajax/img/ajax-progress.gif"></img> </ProgressTemplate> </asp:UpdateProgress> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> <br /> <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /> </ContentTemplate> </asp:UpdatePanel> </div> </form> </body> </html>
Full Source | C#
using System; using System.Web.UI; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { System.Threading.Thread.Sleep(5000); Label1.Text = "Server Time : " + DateTime.Now.ToString(); } }
Full Source | VB.NET
Partial Class _Default Inherits System.Web.UI.Page Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click System.Threading.Thread.Sleep(5000) Label1.Text = "Server Time : " & DateTime.Now.ToString() End Sub End Class

Conclusion

The UpdateProgress control in ASP.NET is a powerful tool for providing status information during partial-page rendering. Its flexibility allows for the inclusion of multiple controls, each associated with a distinct UpdatePanel. By leveraging the UpdateProgress control, developers can enhance the user experience by offering real-time feedback and utilizing visually engaging elements, such as .gif files, to indicate ongoing processes during the waiting period.






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