AJAX :: Update ImageControl After AsyncFileUpload Does Not Work In The Code
Mar 1, 2010
I am using the AsyncFileUpload control in AJAX. This code that I use works fine. What it does it to replace an existing .JPG file that was choosen from the users computer.The thing that I wonder now is that when the .JPG picture was replaced I am using this code to show the uploaded picture in an ImageControl
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Mar 24, 2011
I have a user control with a updatepanel, script manager and a asyncfileupload control.
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<asp:ScriptManager ID="ScriptManager2" runat="server" ></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<cc1:AsyncFileUpload ID="AsyncFileUpload2" runat="server" />
<asp:LinkButton id="lbSubmitOrder" runat="server" title="Submit Order Request" class="btn_blue_dynamic_med"/>
</ContentTemplate>
</asp:UpdatePanel>
In my code behind:
Dim path As String = Server.MapPath("~/temp/test.tmp")
AsyncFileUpload2.SaveAs(path)
In my AsyncFileUpload2 object the filename is nothing. I can't seem to get a refernce to the file that is supposed to be uploaded.
-Nate
UPDATE
I've added
Private Sub AsyncFileUpload1_UploadedComplete(ByVal sender As Object, ByVal e As AjaxControlToolkit.AsyncFileUploadEventArgs) Handles AsyncFileUpload1.UploadedComplete
If e.state = AjaxControlToolkit.AsyncFileUploadState.Success Then
'....'
Else
showErrorMessage(e)
End If
End Sub
I can't hit a break point at the "if" statement after I choose a file. I guess there is something wrong on my page with how ajax is working? Not sure what it is though. I was displaying the ajax upload box via a radio button with a visible=true/false div. The answer told me that the control has to be there the page loads. I took away the div and everything worked! I will now do the show/hide through jquery (which I should have done in the first place).
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Mar 12, 2010
I am uploading an image using the FileUpload control. After I have uploaded the Image to the server and the image is saved there, I am trying to show this image in an ImageBox like in the code.But the image is not shown in the Imagebox. I had this problem for some time but now wonder why the Image isnīt showing in the ImageBox. I have also tried to use the Page_Load event to track the SessionVariable to show the Image but this does not work ?(The file gets uploaded and saved to the specified path anyway, that part works)
[Code]....
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Feb 13, 2011
When Page_Load is running the first time, I set Image 1.jpg to the HTML control with sucess!When Page_Load is running the second time, the Image 2.jpg is Not set to the same HTML control?This even that it should though I use a MessageBox to se that the C# code is running that should set 2.jpg to the control
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Jun 7, 2010
I can't get my <ajax:asyncfileupload> working and I don't see why...
When outside any panel or table it is working well, but as soon as I put it in a <asp:panel> or table I get a strange error which seems to be on client-side but I don't understand what's happen here. Here is the code and code-behind and Javascript.
Here's the error:
[URL]
Here's my front-code:
[Code]....
Protected Sub fupAjoutLogo_UploadedComplete(ByVal sender As Object, ByVal e As AjaxControlToolkit.AsyncFileUploadEventArgs)
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Dec 30, 2010
Is there any way to have the AsyncFileUpload button work with 2 buttons:
- A "Select File" button
&
- An "Upload" button
??
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Aug 28, 2010
I'm having a problem with a Webusercontrol that has an asyncfileupload control. My websusercontrol is being loaded in a placeholder control that's wrapped by an updatepanel.Due to asyncpostback, I have to load and clear the placeholder's controls.
The webusercontrol works flawlessly, except the asyncfileupload, which doesn't want to upload at all. I can assure that the code is without error, because I used to have the webusercontrol running as an *.aspx site.
I guess that the problem is the fact that the control has to be cleared and reloaded with every asyncpostback ?
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Aug 18, 2010
I have an asyncfileupload control within a panel control. The panel is initially set to visible=false on page load. After a user clicks a button to display the panel contents however, I set the panel to visible and the user can then use the asyncfileupload. The problem however, is it seems much of the javascript associated with the asyncfileupload, does not function properly when the panel containing the upload control is set from invisible to visible. If I set my panel's "visible" property to "true" initially, then it works fine. My javascript error message is as follows:
"Form contains a file input, but is missing method=POST and enctype=multipart/form-data on the form. The file will not be sent."
Basically within my asyncfileupload control, I have the following line:
[Code]....
In this scenario, my "args" variable is always null (when I set my pane's "visible" property to "true" on page load, the args variable DOES contain data. Any idea why switching a panel from visible=false to visible=true, would cause an error like this?
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Jan 9, 2013
this is my compelete code for validation type and display image with AsyncFileUplaodI'd like to upload only png, jpg, gifI can upload Image and have its preview successfullyand when try to upload another type It prevents and fortunately I can see this message"Upload a valid file with extension png, jpg, gif."but UnfortunatelyIt shows a message box with this errotUnhandled Exception: this._innerTB is null what's my mistake?Â
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!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 runat="server">
<title>Validation in AsyncFileUpload Example</title>
[code].....
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May 25, 2010
I have a situration that I am using asyncfileupload and after uploaded, then the file content will be directly loaded into textbox1. I have a method to get the file content successfully, but I cannot update textbox1 even it is in updatepanelhere is the code to update the textbox1.text
[Code]....
markup:
[Code]....
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Sep 30, 2010
I want to update an updatepanel after the user has uploaded a photo via the asynfileupload control.
Below is my current code. I also tried setting updatemode="conditional" to "false" and then in code-behind call upnlPhotos.update, but without luck...
Upload photo: <cc1:AsyncFileUpload ID="afuPhoto" runat="server" /><br />
<asp:UpdatePanel ID="upnlPhotos" runat="server">
<ContentTemplate>
<asp:DataList ID="dlPhotos" DataSourceID="dsPhotos" DataKeyField="id" RepeatColumns="5" RepeatDirection="Horizontal" GridLines="None" runat="server" >
<ItemTemplate>
<img alt="" src='/images/trouwlocatiefotos/thumbs/<%# Eval("locpath")%>' /><br />
</ItemTemplate>
</asp:DataList>
<asp:SqlDataSource ID="dsPhotos" SelectCommand="SELECT id,locationid,locpath from location_photos lp where locationid=@locationid" ConnectionString="<%$ConnectionStrings:conn1 %>" runat="server">
<SelectParameters>
<asp:QueryStringParameter QueryStringField="id" Type="Int32" Name="locationid" />
</SelectParameters>
</asp:SqlDataSource>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="afuPhoto" EventName="UploadedComplete" />
</Triggers>
</asp:UpdatePanel>
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May 3, 2010
How can I make the asyncfileupload to work when a user tabs in to it in the same way as the user clicks on it
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Aug 27, 2010
I'm having a problem with a Webusercontrol that has an asyncfileupload control. My websusercontrol is being loaded in a placeholder control that's wrapped by an updatepanel.Due to asyncpostback, I have to load and clear the placeholder's controls.
The webusercontrol works flawlessly, except the asyncfileupload, which doesn't want to upload at all. I can assure that the code is without error, because I used to have the webusercontrol running as an *.aspx site. control has to be cleared and reloaded with every asyncpostback ?
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Jan 9, 2011
I am building a simple Ajax control sample off one of the tutorials provided. Here's code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL]">
<html xmlns="[URL]">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="asm" runat="server" />
<div atomicselection="False">
Departure date: <asp:TextBox ID="tbDeparture" runat="server" />
Return date: <asp:TextBox ID="tbReturn" runat="server" />
<asp:Panel ID="pnlCalendar" runat="server">
<asp:UpdatePanel ID="up1" runat="server">
<ContentTemplate>
<asp:Calendar ID="c1" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="tbDeparture" EventName="Load" />
<asp:AsyncPostBackTrigger ControlID="tbReturn" EventName="Load" />
</Triggers>
</asp:UpdatePanel>
</asp:Panel>
<asp:PopupControlExtender ID="pce1" runat="server"
TargetControlID="tbDeparture" PopupControlID="pnlCalendar" Position="Bottom" />
<asp:PopupControlExtender ID="pce2" runat="server"
TargetControlID="tbReturn" PopupControlID="pnlCalendar" Position="Bottom" />
</div>
</form>
</body>
</html>
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Jan 17, 2010
this is my code but dynamic update not work and The Panel cannot be visible !
<cc1:Accordion ID="Accordion1" runat="server" AutoSize="Fill"
BorderColor="#CCCCCC" BorderWidth="1px" EnableTheming="True"
FadeTransitions="True" Font-Bold="True"
[code]...
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Jan 22, 2010
I want to update my UI with work-progress within a thread. So i am planing to call webmethod every 2 seconds to get the current progress status. This is my code but I can not complete it.
[Code].....
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May 26, 2010
I don't understand why this update panel doesn't work right. It doesn't do a partial update. Enable partial page rendering is set to true but clicking the button causes a full page post back. The text of the label changes with the full post back. So, the event is firing and being handled but not with a partial post back. This is with in a content page with in a Master Page. Does anyone see what I've done wrong?
[Code]....
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Dec 15, 2010
i got a problem with the update panel it doesn't work
here's the code:
[Code]....
here's the codebehind:
[Code]....
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Dec 22, 2010
I have multiple update panels on a page. The page works perfectly in Chrome, Firefox, safari, and opera but it does not work in IE. I am using .NET 4.0.
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Feb 25, 2010
AsyncFileUpload inside MultiView doesen't work! Is there a solution for this problem?
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Jul 29, 2010
if i use a combo box inside an update panel, the updatepanel's partial postback will not work. instead in a postback the page refreshes whole.
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Mar 23, 2010
i have a user control in which the cancel reset button clicks will call a javascript. this works fine when the user control is used normally...
if the usercontrol is put inside an update panel. the javascripts throw an error. "Object Excpected."
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Mar 29, 2010
I can't seem to make the RCE work with the following code:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="Default2" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> [code]....
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Jun 11, 2010
Is there possible to work update progress in the page inside content placeholder.
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Apr 29, 2010
I have a input of type file and when i try to do a Request.files when the input is wrapped in an update panel...it always returns an empty httpfilecollection. Why???
This is the codebehind: (At HttpContext.Current.Request.Files...its always 0 for the count.)
[code]....
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