I Want to make some actions in my program. While these actions run I want to tell the client that these actions are on process. and after this process end, I want to send to the client this file for example Excel file. I minimize my project to show exactly where the problem is
Now, this is my problem: Button1 does not work, And Button2 works fine why? and how to fix that? Maybe have better solution?
this is my aspx clint code :
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Height="38px" onclick="Button1_Click" Text="Button" Width="167px" />
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server">
<ProgressTemplate>
The report is creating please wait...
</ProgressTemplate>
</asp:UpdateProgress>
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="Button" />
</form>
And next is my code behind
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{}
protected void Button1_Click(object sender, EventArgs e)
{
Thread.Sleep(5000);
sendBackToUser();
}
protected void Button2_Click(object sender, EventArgs e)
{
sendBackToUser();
}
private void sendBackToUser()
{
FileInfo file = new FileInfo(@"C:\F\f.xlsx");
if (file.Exists)
{
Response.Clear();
Response.ClearHeaders();
Response.ClearContent();
Response.AddHeader("content-disposition", "attachment; filename=" + @"C:\F\f.xlsx");
Response.AddHeader("Content-Type", "application/Excel");
Response.ContentType = "application/vnd.xlsx";
Response.AddHeader("Content-Length", file.Length.ToString());
Response.WriteFile(file.FullName);
Response.End();
}
else
{
Response.Write("This file does not exist.");
}
}
}
While the UpdatePanel is a perfectly suitable solution to your previous question , you neglected to mention that you were trying to initiate a file download as well (you did say something about it in comments, but I didn't understand you clearly).
The problem with Button1 is because the UpdatePanel doesn't trigger a full PostBack of the page - it only posts back the content of the UpdatePanel.
As per this answer regarding UpdatePanels and downloads , you need to trigger a full PostBack:
Change your UpdatePanel like this:
<asp:UpdatePanel runat="server" id="UpdatePanel1">
<Triggers>
<asp:PostBackTrigger ControlID="Button1" />
</Triggers>
<ContentTemplate>
...
</ContentTemplate>
</asp:UpdatePanel>
Here the waiting box in my project, wich is in a separate control :
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WaitingBox.ascx.cs" Inherits="Web_GUI.Controls.WaitingBox" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<asp:AlwaysVisibleControlExtender ID="AlwaysVisibleControlExtender1"
runat="server" TargetControlID="Panel1" HorizontalSide="Center"
VerticalSide="Middle" HorizontalOffset="150">
</asp:AlwaysVisibleControlExtender>
<asp:Panel ID="Panel1" runat="server" CssClass="waitingBox">
<table>
<tr>
<td>Please wait ...</td>
</tr>
<tr>
<td id="cell_WaitingBox-Panel"><asp:Image ID="imgWaiting" runat="server" ImageUrl="~/Themes/img/loading_animation.gif" /></td>
</tr>
</table>
</asp:Panel>
And simply adding this to any other control that uses it :
<asp:UpdateProgress ID="UpdateProgress2" runat="server" DisplayAfter="100" AssociatedUpdatePanelID="UpdatePanel1">
<ProgressTemplate>
<MyControls:WaitingBox ID="wb2" runat="server" />
</ProgressTemplate>
</asp:UpdateProgress>
Hope it inspire you... cause i don't exactly remember how it work.
But once it work, it can show a waiting box in all the control of your project.
I remember it shows a please wait message whenever the code behind is taking more than DisplayAfter="100"
wich is 0.1 secondes maybe.
EDIT Below code is in an other project, more simple
js :
$.ajax({
url: "@Url.Action("create", "Post")",
type: "POST",
contentType: "application/json",
data: JSON.stringify({ model: model})
}).done(function(result){
window.open('@Url.Action("Print", "controler", new { id = Model.id })', '_blank').focus();
});
code behind :
return Json( new { Whatever...});
But you rather try to call another javascript function so... forget you saw this
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