AJAX :: Preview Of An Image That Has Been Uploaded Through AsyncFileUpload?
Feb 8, 2011How would I go about having a thumbnail preview of an image that has been uploaded through AsyncFileUpload?
View 2 RepliesHow would I go about having a thumbnail preview of an image that has been uploaded through AsyncFileUpload?
View 2 Repliesthis 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?
<%@ 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].....
i am using fileupload asp.net controll so how i create image preview before image uploaded
View 6 RepliesI am working my way through image upload tutorial and have a question. Is it possible to preview an image that is being uploaded without using javascript and using only razor and html? If so,
View 2 RepliesI 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>
I am using this link for ajax image upload.
[URL]
I want when the image is uploaded, it's name changes. In other words I want to change the name of image.
How can I do this?
i need to create a photogallery page where the thumbnail images are placed and when the user clicks on the image the original image should be displayed in the modalpopup. it should also display the progress bar within the modalpopup before the original image gets loaded completely. i have seperate folders for thumbnail as well as original image.
View 4 RepliesI need to know, how to add a validator in Ajax AsynFileUploader which will validate the image dimensions.
View 8 RepliesMy combobox and asp:fileupload and imagepreview all are inside update panel , my combobox is doing postback after which my image disappears.... how to retain back image after postback ?
In [URL] .... if I remove input:file and put asp:file then it will be possible ... here's all code:
using System;
using System.Drawing;
using System.IO;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default3 : Page
[Code] ....
i am using the AsyncFileUpload from the ajaxtoolkit, upter the upload is complete ,
i want to display all the images that were uploaded (and their URL is inserted into the DB) with my repeater and binding method.
but its not working! the images are uploaded, the DB insert works file, but i cant see the images after the repeater is dinded.
(i have to mention that if i go step by step, i do see that the ITEMBOUND is being binded and executed)
[Code]....
[Code]....
I've created an AsyncFileUpload device that uploads an image in ListView but it doesn't refresh on the page until the page is manually refreshed. how to accomplish this? This is the applicable code:
In ListView control:
[Code]....
After ListView control:
[Code]....
Code-behind:
[Code]....
I have an asyncfileupload control. AFTER the file has been successfully saved to disk I want to assign the uploaded image to a HTML element. To show it to the user.
Important: in the afuFlyer_UploadedComplete method I'm renaming the image, so the image saved to disk does NOT have the same name as the file the user initially uploaded.
I have this:
<cc1:AsyncFileUpload ID="afuFlyer" OnClientUploadComplete="Async_UploadComplete" OnUploadedComplete="afuFlyer_UploadedComplete" UploaderStyle="Modern" runat="server" />
and a javascript function:
function Async_UploadComplete(sender, args) {
var filename = args.get_fileName();
var contentType = args.get_contentType();
var text = "Size of " + filename + " is " + args.get_length() + " bytes";
document.getElementById('lblStatus').innerText = text;
}
But the args.get_fileName(); is useless since the filename has been changed. So I need to pass the new filename to this method somehow?
Also, is the image actually already saved to disk when the Async_UploadComplete function is called? Or has the upload to the server just been completed and not the saving to server disk?
Ive also tried working with ScriptManager.RegisterClientScriptBlock and ScriptManager.RegisterStartupScript in afuFlyer_UploadedComplete method without success:
i want to make something like that
<cc1:AsyncFileUpload runat="server" id="upload"
onuploadedcomplete="Unnamed1_UploadedComplete">
</cc1:AsyncFileUpload>
<img onclick='upload.click()'/>
i tried lots of script but it doesnt work.
I have a fileupload control in a contentplaceholder in a masterpage. I have to preview the image whenever I browse an image beside it in an imagecontrol.
My application is running on a different server .So I can't give the filepath of my local system.
Also I don't want to store the image in any location and i'm not supposed to use any session variable to pass it to generic handler.
I used this code to uploading image and insert it to database
string path = Server.MapPath(".") + "../Upload";
string[] validext = { ".jpg", ".gif", ".png", ".rar" };
string ext =
System.IO.Path.GetExtension(AsyncFileUpload1.PostedFile.FileName);
if (Array.IndexOf(validext, ext.ToLower()) < 0)
[Code] ....
My problem is that it didn't insert image name in database it save some unknown Characters in database. So when I want bind my image from database it didn't show image .
using vb.net/asp.net 2005
I've been tasked with creating a page where the user can do the following in this order:
1. browse to and select a jpg image
2. preview the image that the user just selected
3. if the user is happy with the preview then click the GO button to load the image to the Image folder.Does anyone have any good examples or sample code of how to do this?
i did this code to upload file and displaying it in the image:
[Code]....
the code works good. the file is uploaded under my website here in the solution explorer: now after uploading the file,the newly uploaded file is shown in the image(since there were a few more images present in the same location but they were not shown by the image) i used this url to the imageurl:
ResolveUrl("~")
which returns me this:
WebSite1
now my question is why the newly uploaded image is shown in the image? there were several other images present at the same location and even i have not used something in my code that tells to show only the newly added image from my website into the image.
look at the picture, i want that image preview will come when i choose the file location before uploading to the database. is it possible?
EDIT: i found codes in other sites, they say those only work in IE, so it means currently, this preview function doesnt support FF? coz im using FF or sometimes google chrome.
I have to implement an image upload functionality in asp.net. The method I have followed works like this :-
Submit a form containing an <input type='file'> element and set the target of the form to a named iframe[to give the impression of a Ajax request/response ]. The aspx file which this form is posted to, writes the image into the response as Reponse.Write("<img src='location'/>"); The image displayed is due for cropping (where i plan to use JCrop).
What I would like to know is : Is there another way to display the image in a <div> may be, rather than in an iframe which I think is far better than this approach.
i am using Asynchronous file upload in model pop up control . i want to show the uploaded image's preview wthin the modelpopup after the upload is completed. anyone tell me how i can do it
View 4 RepliesIn my asp.net page I have an image upload control where users can upload there profile photo. what I want is when user browse his/her photo an immediate preview should displayed. Is there any ajax image control for that or how can I implement that?
View 3 RepliesI am building an upload page for photos, and would like to preview the image once uploaded. I have looked at a few posts but have not quite reached a working solution.
Section from AddMedia.aspx.vb (btnUpload_Click procedure)
[Code]....
Section from AddMedia.aspx
[Code]....
how i can preview Image without upload to my server in asp.net C# and when i see the image i should press upload to upload to server.
View 3 RepliesI want to load an image in a FileUpload control which is inside a panel in a ModalPopupExtender, I'm using a script to view the image before uploading it, but I can not see the preview image, not 'running in modal, this is my code
<div class="box">
<asp:Image ID="Image1" runat="server" Height="120px" Width="120px" ImageUrl="~/img_sistema/sin_foto.jpg" />
<div class="mask">
<asp:Button ID="btnShowPopup" runat="server" Style="display: none" />
[Code]......
script preview image
<script type="text/javascript">
function showimagepreview(input) {
if (input.files && input.files[0]) {
var filerdr = new FileReader();
filerdr.onload = function (e) {
[Code]......
I am Getting strugle to get image preview after browsing image.please give me hand to get out from this problem.how to get image preview it may be through c#.net or javascript please give me code for this.i got very less examples from google but they are not worked.Please give me the CODE or sample project. and they should work in all browsers.
View 3 Replies