AJAX :: How To Get Image's Dimensions When The Image Is Being Uploaded By Ajax AsyncFileUploader
Nov 26, 2010I need to know, how to add a validator in Ajax AsynFileUploader which will validate the image dimensions.
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I have this:
<cc1:AsyncFileUpload ID="afuFlyer" OnClientUploadComplete="Async_UploadComplete" OnUploadedComplete="afuFlyer_UploadedComplete" UploaderStyle="Modern" runat="server" />
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var filename = args.get_fileName();
var contentType = args.get_contentType();
var text = "Size of " + filename + " is " + args.get_length() + " bytes";
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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?
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[Code]....
in C# code I wrote these:
[Code]....
But it does not work. Image is like Previous. Note that ImageOperations.ResizeFromStream() method resizes and saves the image to a specefic folder. actually I should trigger a Postback to Update the Update Panel but How to do that. I usedUpdatePanelNew.Update(); but it does not work!
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[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("~")
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WebSite1
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[Code]....
C# - Get Dimensions Of An Image On The Web - Avoid Memory Hog?
Jan 6, 2011Im getting some images from a webpage at a specified url, i want to get their heights and widths. I'm using something like this:
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Get Image Dimensions Using Javascript During File Upload?
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The image control should get the path from fileupload and should display the image.
I have done it with following code attached
HTML Markup-
<asp:FileUpload ID="FileUpload1" runat="server"
style="top: 256px; left: 533px; position: absolute; height: 23px; width: 217px" ForeColor="White" />
<asp:Button ID="btnset" runat="server" Font-Bold="False" Font-Names="Times New Roman" Font-Size="Medium" style="top: 309px; left: 605px; position: absolute; height: 26px; width: 81px" Text="Set Photo " />
<asp:Image ID="Image2" runat="server" style="top: 66px; left: 568px; position: absolute; height: 152px; width: 136px" BorderColor="#CCCCFF" BorderStyle="Ridge" />
VB Code-
Protected Sub btnset_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnset.Click
Image2.ImageUrl = FileUpload1.FileName
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May 7, 2015I use fileupload control to upload image below is code:
protected void BtnUpload3Img_Click(object sender, EventArgs e)
{
uploadImageError.Visible = true;
if (fup3.HasFile && fup3.PostedFile.ContentLength < 102400)
[Code]....
in above code I define format of image that user can upload .png or .jpg image and size of image should be lessthan 100KB now I want define that users just can upload images with dimension 1007*143 how I can do it?
AJAX :: AsyncFileUploader Is Not Working In IE8?
Nov 26, 2010Here is the code of my Ajax Toolkit AsyncFileUploader which I have added in my ASP.Net(C#) web application.
[Code]....
[Code]....
public void afuUpload_UploadedComplete(object sender, AsyncFileUploadEventArgs e)
AJAX :: Asyncfileuploader Uploads Twice?
Oct 29, 2010I'm hoping that somebody cleverer than I am can explain what's happening with my file uploading and how to improve it.My website is used by vets to submit photographs of tumours in horses for examination by another vet and so it's important that the pictures uploaded are high quality, and therefore the file size is large. Since they might be uploading details of several tumours at a time with several photos of each uploading times can be very long.
I accept that upload speeds are generally slower than download speeds and I have put notes on the page to advise the user to be patient while the images upload. However, I've noticed when using Google Chrome, which displays a percentage-complete in the status bar when files are being uploaded that what seems to happen is that when the user selects a picture from the asyncfileupload control it then slowly counts to 100% as the image is uploaded. But when they then click on the 'Save' button which is when code-behind uploads the file to the web server and writes an entry in the database it again counts to 100% at the same, slow speed.
It's as if the file is being uploaded twice. It's as if the file is being uploaded twice, but I've only coded it to happen once, when the 'Save' button is pressed. The first upload must be some part of the way the asyncfileupload control works. So am I using it incorrectly? Should I somehow be using the inbuilt, automated upload to get the image to my server rather than in the code-behind of the 'Save' button?
One other piece of information which may be relevant is that at the point the picture is uploaded by the asyncfileupload control there is no associated record in the database for it to be linked to. When the 'Save' button is clicked a record for that tumour is created first, then then the image(s) is uploaded and an associated record created with the image filename, so using the automated uploading of the asyncfileupload control may not be possible for me as at that point there is no record to link the filename to. If that's the case can I disable it somehow?
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Another very annoying thig is that; when its style is set to modren it does not show that grey image with the text "Select File" in any of the browser except IE 7.
While with "Tradition Style" the height of this control looks so squeezed in both IE 7 & IE 8 , And Is there any way so that we can change the style of that Browser button like the other buttons on out site and can we apply textbox skin on the uploader to it can shape like a textbox?
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Oct 3, 2013I am learning asp.net using Visual web developer 2008 express.
I have an image control with the html code below
<div class="Header">
<asp:Image ID="image1" runat="server"
ImageUrl="D:/Master/test.jpg" Width="500" Height="300"
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</div>
In design view, the image shows but when i run the app, the image is not shown. Only the alternate text is displayed.
The css code code as below.
.Header
{
top:10px;
left:20px;
position:absolute;
width:800px;
background-image:URL(D:/Master/test.jpg);
background-repeat:repeat-x;
}
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May 6, 2010i m working on ajax editor control, here i want to display image in ajax editor control is there any way to display image in this control ?
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Jan 21, 2011I've got to following function which is called to change the resolution of an image. I want to do this so uploaded image with for example 300dpi will be modified to 72dpi (for web). This question is related to another question here on SO where i'm working on.
I'm creation an extension method for this to be able to use this function on more places in my application, instead of only when uploading new files. (See above mentioned question)
public static byte[] SetDpiTo72(this byte[] imageToFit, string mimeType, Size newSize)
{
using (MemoryStream memoryStream = new MemoryStream(), newMemoryStream = new MemoryStream())
{
memoryStream.Write(imageToFit, 0, imageToFit.Length);
[Code]....
Displaying An Uploaded Image?
Feb 2, 2010I have code that is successfully uploading images to a folder on my website with the code below.. what I would need to do next to actually display that image on the same .aspx just after the actual upload?
Private
Sub btnUpload_Click(ByVal sender
As
Object, _ByVal e
As System.EventArgs)
Handles btnUpload.Click
Dim destDir
As
String = Server.MapPath("./images/Upload")
Dim fName
As
String = Path.GetFileName(uplPicture.PostedFile.FileName)
Dim destPath
As
String = Path.Combine(destDir, fName)True
lblUploadSuccessful.Text = "Upload succeeded."
End
Sub
