I have a web application running asp.net and SQL Server 2008.
When i run the site within VS2008, the captcha image works fine, but when i run the site via the internet i have no captcha image.
i was working on one of the project as it is working fine in Firefox but it is giving the javascript exception in internet explorer.Errror: Error says "s" is undefined in the s.currencyCode="USD" line but "s" is defined in the external javascript file s_code.js
<script type="text/javascript" language="JavaScript" >
var s_account="mnsdev"
</script>
<script type="text/javascript" language="JavaScript" src="http://media.world.com/ads/usen/rpt/Omniture/s_code.js"></script>
<script type="text/javascript" language="JavaScript" >
s.currencyCode="USD"
[code]...
how can i use CAPTCHA Image Verification in C#
View 10 RepliesI'm implementing captcha on my website like the one in [URL]. It is working fine while running on VS2008. However, not when uploaded on IIS. I think the image is being blocked by IIS.. anyone knows how to fix this?
View 1 RepliesI want to have the captcha image validation where users need to enter the text shown in image.
View 1 RepliesI used a custom captha inside my mvc application and it works perfectly fine in local but in production it isn't being generated. why is that?
I used the following statement for saving the image. do you think it is beacuse of that?
[Code]....
how you have implemented mathematics type captcha in comments sections in URL...I like to implement this type of captcha security, its more clean and user friendly.
View 1 Repliesi have a image control that show Captcha...
Problem:in the Host(not local system) Captcha show only one image that created for first time,but in my local system every things is right,and captcha change for every page load...
i think image can't find server folder address and always show first produced image!!!
see code:
[Code]....
where is the problem?
notice:when i see server "Upload" folder and "AddIntuitionReflexRandom.gif" file,content change truly,but that can't show in my image.
[URL]
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I have implemented as writeen in the aritcle but the captcha image is not being shown when I run the application.why
I have VS 2008 installed and have IE8 browser as well as google chrome browser.However wheneever i try to run a .aspx page in solution explorer of VS with the browse with.. options,the page runs fine with chrome browser but not with IE8.The IE browser shows the error "Ineternet explorer cannot display the page".I have set the IE as the default browser in the browse with ... option of the VS 2008.
View 6 Repliescaptcha which supports in MVC application and allow captcha image to refresh with "Genreate new image" link.
View 5 RepliesI have issue in Mathematical captcha, its not working in IIS,Image path not getting, it shows altertext "Captcha".
View 1 RepliesI have implemented captcha control in my webpage based on the article How to implement Captcha in ASP.Net.
It is working fine when running through the VS IDE, but when i deployed the website in IIS 8 (Windows 8.1) server the captcha image does not show.Â
How can I bind image control with captcha from generic handler using jquery.
View 1 RepliesI'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);
// additional options
qq.extend(this._options, {
element: null,
// if set, will be used instead of qq-upload-list in template
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>',
// template for one item in file list
fileTemplate: '<li>' +
'<span class="qq-upload-file"></span>' +
'<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>',
classes: {
// used to get elements from templates
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',
cancel: 'qq-upload-cancel',
// added to list item when upload completes
// used in css to hide progress spinner
success: 'qq-upload-success',
fail: 'qq-upload-fail'
}
});
// overwrite options with user supplied
qq.extend(this._options, o);
this._element = this._options.element;
this._element.innerHTML = this._options.template;
this._listElement = this._options.listElement || this._find(this._element, 'list');
this._classes = this._options.classes;
this._button = this._createUploadButton(this._find(this._element, 'button'));
this._bindCancelEvent();
this._setupDragDrop();
};
fileuploader.js - qq.FileUploaderBasic
/**
* Creates upload button, validates upload, but doesn't create file list or dd.
*/
qq.FileUploaderBasic = function(o){
this._options = {
// set to true to see the server response
debug: false,
action: '/server/upload',
params: {},
button: null,
multiple: true,
maxConnections: 3,
// validation
allowedExtensions: [],
sizeLimit: 0,
minSizeLimit: 0,
// events
// return false to cancel submit
onSubmit: function(id, fileName){},
onProgress: function(id, fileName, loaded, total){},
onComplete: function(id, fileName, responseJSON){},
onCancel: function(id, fileName){},
// messages
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.",
onLeave: "The files are being uploaded, if you leave now the upload will be cancelled."
},
showMessage: function(message){
alert(message);
}
};
qq.extend(this._options, o);
// number of files being uploaded
this._filesInProgress = 0;
this._handler = this._createUploadHandler();
if (this._options.button){
this._button = this._createUploadButton(this._options.button);
}
this._preventLeaveInProgress();
};
I tried this link to generate verification Image [URL] ..... It works fine.
But I'd like to put a button in page for regenerating captcha for example. When the image was unreadable for user.
So I put an updatepanel in page and this is my code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<tr> <td colspan="2">
<asp:Image ID="imCaptcha" ImageUrl="~/Captcha.ashx" runat="server" />
[Code] .....
Although the image changes but the whole page is refreshed. Whether this is due to incompatibilities httphandler and updatepanel?
I am using the ASPNET_Captcha control for my login page. It works fine. However when i implement the forms authentication, the catcha image does not appear.Â
Do i need the location section in the web.config file? If yes can you share the details for the same.
I used a ASP Image control using Visual Studio 2008 and defined the URL to the JPG picture as in :
asp:Image ID="Image1" runat="server" ImageUrl="~/App_Data/Stone Forest 2.jpg"
style="z-index: 1; left: 368px; top: 290px; position: absolute; height: 307px; width: 537px" />
When VS debugging view on the .aspx page on Internet Explorer 8, I don't see the picture except for a blank Image control box outline and at the top left corner, a symbol "X" in a square box was displayed. Is there some settings to do with IE8 or Visual Studio 2008 ?
How do you create a dummy image in asp.net to fool internet explorer 7.
View 7 RepliesI'm using a lot of LinkButtons in my web application with text and images inside them. All LinkButtons are set with a ToolTip and all images inside the LinkButtons are set with an alternate text.
<asp:LinkButton CssClass="button button-input" ID="btnSearch" runat="server" CausesValidation="False" ToolTip="Search">
<img id="imgSearch" runat="server" src="../../../images/icons/magnifier-left.png" alt="search-something" width="12" height="12" />
</asp:LinkButton>
The problem is that in Internet Explorer the alternate text of the image is shown instead of the ToolTip of the LinkButton. In Firefox this problem doesn't exists, it always show the ToolTip of the LinkButton.
This is the produced XHTML:
<a href="javascript:__doPostBack('...','')" title="Search" id="..."><img width="12" height="12" alt="search-something" id="..." src="../../images/icons/magnifier-left.png"></a>
Is it possible to overcome this issue? Removing all alternate texts will resolve the issue but a better (more standard) way is always welcome!
I've created code to retrieve an image from the file system using an ASHX handler. The code displays the image correctly in Chrome, but I get a broken image in IE:
[Code]....
I have a problem with upload a picture from desktop to a folder on server. The problem is that it seems to work about 1 of 10 times wich confuses me. Perheps something with this code is not enterily correct ?
First I check for if Pic1.jpg or Pic1.gif exists and then delete it if it exist. Then I want the uploaded picture to be named the same. Pic1.jpg if it is .jpg format or Pic1.gif if the uploaded picture has a .gif format.
[Code]....
when i test this page http://www.catalogues4u.com.au/ViewCategory.aspx?catID=119 im getting the above error. to replicate this issue visit the above page in ie7 and you will get the prompt.
View 3 RepliesI have a panel where I have set a background image. (This image can stretch with the style I have declared) In this panel I have put a table with 3 Columns The table has width="100%" to be as wide as the panel. Each column has a label.
What I am trying to do is that Column 2 & 3 will have a static width and the Column 1 will have a dynamically width that can change if the browser window is adjusting its width.The problem in the code below is that the Column 2 & 3 width is getting smaller if the browser windows width is getting as small as possible. I am trying to have the width static all the way but in when the browserwindow get a very small width the columns
is getting small too.
Is it possible to set a minimum width to a <td> ?I have commented out the image to see more clear what happens. [Code]....
I have a Datalist.In the ItemTemplate I add an asp:label and an image (img). I want both controls to be clickable as one Item so I put both inside a LinkButton.The result was strange I got only the Label clickable and fire the Datalist ItemCommand event ? how to make both works as one clickable Item ?
View 5 Replies