Tab Key With Image Upload Controls?

May 7, 2010

I am using an interface with multiple Image upload controls,

I need to switch among them but i am not able to do the same using Tab key.

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I'm using a slightly modified version of Valum's upload [github link], I've modified it to upload to a database but haven't modified the javascript that it is using to get the file into the Request as an InputStream. The following line of code is failing in IE 8 but is confirmed to work in Chrome. using (Image imgInput = Image.FromStream(Request.InputStream)) The error received is "Parameter not valid". It appears to be having an issue with the Input Stream being used but it exists/has data (not sure how to validate if the data is good or not).

Page
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Upload-Pictures</h2>
<div id="file-uploader">
<noscript>
<p>Please enable JavaScript to use file uploader.</p>
</noscript>
</div>
<script src="/Scripts/fileuploader.js" type="text/javascript"></script>
<script type="text/javascript">
function createUploader() {
var uploader = new qq.FileUploader({
element: document.getElementById('file-uploader'),
action: '/Admin/FileUpload/' + <%= Model.PropertyId %>,
debug: true
});
}
window.onload = createUploader;
</script>
</asp:Content>
Controller
[AcceptVerbs(HttpVerbs.Post)]
public JsonResult FileUpload(int id)
{
try
{
byte[] newImageByteArray = GetByteArrayForResizedImage(350, Request.InputStream);
byte[] thumbnailByteArray = GetByteArrayForResizedImage(150, Request.InputStream);
//Add to DB
}
catch (Exception ex)
{
// This is where the exception is caught
return Json(new { success = false, message = ex.Message }, "application/json");
}
return Json(new { success = true }, "application/json");
}
private static byte[] GetByteArrayForResizedImage(int imageSize, Stream inputStream)
{
byte[] imageByteArray;
// For some reason in IE the inputStream here is causing it to crash
using (Image imgInput = Image.FromStream(inputStream))
{
//Image processing
}
return imageByteArray;
}
fileuploader.js - qq.FileUploader
/**
* Class that creates upload widget with drag-and-drop and file list
* @inherits qq.FileUploaderBasic
*/
qq.FileUploader = function(o){
// call parent constructor
qq.FileUploaderBasic.apply(this, arguments);
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qq.extend(this._options, {
element: null,
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listElement: null,
template: '<div class="qq-uploader">' +
'<div class="qq-upload-drop-area"><span>Drop files here to upload</span></div>' +
'<div class="qq-upload-button">Upload a file</div>' +
'<ul class="qq-upload-list"></ul>' +
'</div>',
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fileTemplate: '<li>' +
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'<span class="qq-upload-spinner"></span>' +
'<span class="qq-upload-size"></span>' +
'<a class="qq-upload-cancel" href="#">Cancel</a>' +
'<span class="qq-upload-failed-text">Failed</span>' +
'</li>',
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button: 'qq-upload-button',
drop: 'qq-upload-drop-area',
dropActive: 'qq-upload-drop-area-active',
list: 'qq-upload-list',
file: 'qq-upload-file',
spinner: 'qq-upload-spinner',
size: 'qq-upload-size',
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// used in css to hide progress spinner
success: 'qq-upload-success',
fail: 'qq-upload-fail'
}
});
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};
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/**
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*/
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params: {},
button: null,
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maxConnections: 3,
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allowedExtensions: [],
sizeLimit: 0,
minSizeLimit: 0,
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onSubmit: function(id, fileName){},
onProgress: function(id, fileName, loaded, total){},
onComplete: function(id, fileName, responseJSON){},
onCancel: function(id, fileName){},
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messages: {
typeError: "{file} has invalid extension. Only {extensions} are allowed.",
sizeError: "{file} is too large, maximum file size is {sizeLimit}.",
minSizeError: "{file} is too small, minimum file size is {minSizeLimit}.",
emptyError: "{file} is empty, please select files again without it.",
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},
showMessage: function(message){
alert(message);
}
};
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this._filesInProgress = 0;
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if (this._options.button){
this._button = this._createUploadButton(this._options.button);
}
this._preventLeaveInProgress();
};

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[IMG]http://i48.tinypic.com/15x3fpy.jpg[/IMG]

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I want to upload image through fileupload toolbox and display it in image control.

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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 " />
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VB Code-

Protected Sub btnset_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnset.Click
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This is my current code to upload to the database

[Code]....

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iam using asp.net with c#

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[Code]....

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I also have the following two lines to make it working...

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[Code]....

in above code

[Code]....

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[URL]

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[URL]

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[URL]

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[Code]....

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ASPX CODE

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
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[Code]....

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