C# - Download Feature Not Working Within Update Panel?
Mar 28, 2011
I have a Web User Control containing a FormView. The formview shows details of job seeker. I have provided a button for "Download Resume" link, so that admin/HR can download the resume. I have placed this control in an aspx page that contains the UpdatePanel. Everything works fine except Download Link.
I have given a Command on donwload link button and a function is associated with the command to start download.
Below is the code i have implemented -
[Code].....
The code works perfectly if update panel is removed but generates script errors if update panel is used.
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Similar Messages:
Jun 8, 2010
I'm new to the world of Update Panels and i'm having a hard time figuring out how to use them properly.
I have a form that has a table(TABLE1)...and inside TABLE1 i am linking to a sql data source....at the bottom of the table i have a 'Add' button.
When the user clicks the add button...a modal popup appears (POPUP1) and inside the POPUP1 the user can click a link that can add a user...when the link button is clicked...a panel within POPUP1 is set to visible = true.
I have one update panel around the whole table and the add button...when i click add and then click the link to add a user....the modal popup disappears.
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Mar 3, 2011
I have struggled with this for the last 2-3 days. I have a tab container control with a update panel surrounding it. On one of the tabs I have allowed the user to upload and download files to a SQL Server database. The upload works fine and the download works fine only when I remove the update panel.
I have tried to implement the solution that's provided at the following location...http://encosia.com/2007/02/23/ajax-file-downloads-and-iframes/I had to modify the code a little bit to fit my scenario but it looks like it would work. Is there another way to download files from a database within a update panel?
If there isn't another way to do this what could be wrong with my code...following the example on the encosia site...
Page starting from [Code]....
The code never gets past the if statement with in this java script. Should I put a trigger on the update panel to force a post back. Any help will be appreciated, java script is not my strong point.
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Sep 20, 2015
My gridview is inside master page now in the link button used inside gridview for downloading, it is not downloading a file.
I followed this article : [URL] .....
It works in child pages, but when i use gridview inside master page and follow this article , it wont download a file. Here's my coding for beck end :
protected void DownloadFile(object sender, EventArgs e) {
try {
string filePath = (sender as LinkButton).CommandArgument;
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filePath));
Response.WriteFile(filePath);
Response.End();
} catch (Exception) {
throw;
} }
Rest coding in html is same as mentioned in article.
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Aug 12, 2010
I have 3 panels on single .aspx page and depending on condition required panel is displayed . Default panel is panel 1 .
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Mar 12, 2011
How to make the download button owrk inside update panel
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Feb 3, 2011
I have this download button, which is inside the update panel. due to the post back issues, the download button is not working and the whole page posts back. is there any way to remove that button alone from the hold of the update panel and make everything else work under update panel.
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Mar 20, 2011
I'm writing an app in which user can register. While registering the one may choose several options and according to these regiester fields are visible or not and are required or not. I came up with an idea that all fields will be in in the updatePanel and when users changes registration options I would set visibility of these fields on the server side.
It works but incredibly slow and whats more on the FF I have the given error:
The state information is invalid for this page and might be corrupted
3 checkboxes with other fields are in the updatePanel
Each field is in dl tag with runat="server>
I had to do it like that cause for "required" option I simply add css class to this dl (need in in javascript validation. If field should be visible I set visible="false" for given dl and then that field for example FirstName with title and so on isn visible after postback.
Am I doing something wrong ? Why does it take so long (~4 min on localhost) and in firefox it doesnt really work (when I use debug I think that process completes without errors on ff, I dont understand that at all :)
If update Panel is so weak what would be other option to change visibility and adding required class to all dls. Logic is quite complicated and has to make query to DB so simple javascript would be quite tricky.
Oh and I'm using ASP.Net and cant upgrade on this project.
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Nov 23, 2010
[Code]....
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Jan 31, 2011
provide the solution to the problem. must achieve the ajax type functionality for the controls of the page displayed within the iframe, the contents(button) withing the iframe are causing complete post back i have used update panel, script manger, on the main page and also on the pae displayed in the iframe even then post back occurs note i check this using the current time of day in the label. here are the codes.
default.aspx
[Code]....
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Apr 24, 2010
I have added two update panels to my page. I'm trying to update the first panel but not the second. The second panel contains validation controls which seem to be kicking in no matter what I try.
<asp:ToolkitScriptManager runat="server" ID="ScriptManager" />
<asp:UpdatePanel ID="updatePnl" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:label ID="NoConsignments" runat="server" ForeColor="red" />
[Code]....
I've left out some of the middle code of there is alot.
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Apr 20, 2010
I am working on an application where i have got, a content page within a Master Page. I have placed a gridview on the page. This gridview has three fields, one of them is TemplateFied, a BoundFiled and a CommandField, along with paging enabled in the gridview.
In the template field i am creating a dynamic javascript on RowDataBound.
I wanted to place this gridview in Update panel so that it doesnot re-loads when command is clicked or page is changed.
I placed a scriptmanager and an update panel, and placed the grid in it. Now my command field works only once and not more, and same is true for the javascript, it doesnt gets initilized.
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Apr 15, 2010
I'm working on a simple demo project so that I can learn some things about ASP.NET's AJAX capabilities. My problem is that I can't seem to get an UpdatePanel to work properly with a CheckBox inside of it. Here is the markup I'm using in my .aspx file:
[Code].....
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Jan 7, 2011
fileupload control is inside a grid, When Ajax is not used its s working correctly, so as wen i use a Update panel, am getting a error in uploading my file to thr database.
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Feb 12, 2011
I am facing a problem in FileUpload controls that is available inside update panel along with CalendarExtender.
Now When I click on submit button after browse a file it is returning null fileobject value in codebehind page.
[Code]....
I dont know what is the reason behind of this problem, can you let me know what is the cause and probable solution for this.
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Oct 14, 2010
I am using JQuery tabs in my aspx page, but update panel is not working. If I do any operation in tab2, after posting back, tab1 is activated.
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May 19, 2010
I have a problem doing a partial page post back with an update panel within a tab container.
I am adding the control programmatically as follows
[Code]....
The controls are added to the tab container but the button now causes a full page postback. The button_click event is no longer called. Is there something I am missing here.
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May 28, 2010
I have one asp.net content page and calling .js file in that content page <asp:ImageButton> onclient click event. but it is not all calling .js file
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Jan 4, 2010
Environment used : asp.net 2008 webapplication with c#
problem : here is my code :
default.aspx
<form id="form1" runat="server">
<iframe id ="captchaframe" src="test.aspx"></iframe>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button id="Button1" runat="server" Text="refresh" onclick="Button1_Click"></asp:Button>
</ContentTemplate>
</asp:UpdatePanel>
</form>
default.aspx.cs
protected void Button1_Click(object sender, ImageClickEventArgs e)
{
Session["CaptchaImageText"] = GenerateRandomCode();
StringBuilder sb = new StringBuilder();
sb.AppendLine("$(document).ready(function() {");
sb.AppendLine(@"document.frames['captchaframe'].location.reload(true);");
sb.AppendLine(" });");
ScriptManager requestSM = ScriptManager.GetCurrent(this);
if (requestSM != null && requestSM.IsInAsyncPostBack)
{
ScriptManager.RegisterClientScriptBlock(this,
typeof(Page),
Guid.NewGuid().ToString(),
sb.ToString(),
true);
}
else
{
ClientScript.RegisterClientScriptBlock(typeof(Page),
Guid.NewGuid().ToString(),
sb.ToString(),
true);
}
}
I want to just refresh the iframe on button click without whole page postback.so i have used update panel for removing postback and easily refresh iframe .I works in IE, but not working in firefox.
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Oct 13, 2010
I want to create a searching work to fill the gridview detail acc to seach params.. When we enter text into search textbox it fills the grid, that works filne without postback. After this i have to fill the form values accroding to link clicked in Gridview. I uses the updatapanel in grid like
[Code]....
When the grid fills it doesnt fill my form... why it happens.. i used the Updatapanels multiple as well.. If i use the Updatepanel in whole.. it may flicker while filling in the form values.
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Nov 12, 2010
I am fixing issues in a project where I was not able to figure out a solution for the below problem. There are multiple user controls in Main.aspx page. First one is header.ascx which is added directly in .aspx page. and the others are added dynamically from Page_Init event. Basing on the hyperlink clicked from the menu on the left side of the main page, the respective user control is displayed.
Now, If I try to add script-manager/update panel inside any of the dynamic user controls, the respective user control page throws error. I have noticed that the header.ascx control is using scriptmanager. Is it creating the problem? How to handle this kind of issue?
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Sep 29, 2010
I have a button that updates a datagrid that is in an update panel and everything works swimmingly in the dev area but when i publish it it just doesnt work.
appart from that everything else on the page works as normal
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Oct 20, 2010
I am trying to export a file upon button click event. The structure of my app is like this.
UpdatePanel
TabContainer
Tab1
[code]...
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Jun 15, 2010
I am having a treeview in Masterpage,all tree items are associated with different page,when i click on any of the tree item,i the respective page should be displayed in the ContentPlaceHolder of the masterpage without postback,
i kept the treeview and the contentplaceholder in the updatepanel,still it is not working,means entire page is posting back to server
Here is my code
<form id="form1" runat="server">
<div>
<table>
<tr>
<td valign="top">
[Code]....
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Feb 16, 2011
I am using geomap-linechart api in my application.. I want to view the map and the chart on a drop down selected index changed event.. It doesn't work if i put it inside update panel.. it becomes blank.. but it woks fine if i put the control outside the update panel.. Is there any reason or suggestion for this prob?? is it not possible to use the geomap inside update panel?? this is my code..
<script src="Scripts/jquery-1.3.2.min.js" type="text/javascript"></script>
<script type='text/javascript' src='http://www.google.com/jsapi'></script>
<script src='http://maps.google.com/maps?file=api&v=2&key=ABCDEFG' type='text/javascript'></script>
<script type='text/javascript'>
[Code].....
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