I develop small application using javascript, using this I can draw on the canvas.I want to know, How get snapshot of my canvas and send it another one, using javascript or any other server side language.
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when i request a webpage eg : http://www.google.comit gives me a snapshot of google which would be 100 * 100 image..
View 16 RepliesCan someone give me some working code that will take a snapshot a website giving the url or is there any free controls out there?
View 1 RepliesI would need to take a snapshot of my webpage in asp.net c#, i have used the
WebsiteThumbnailImage which is a part of the System.Windows.Forms; i am able to get the snapshot of the webpage in my
Local system but unable to get it in the Devlopment Server
Im trying to use the sdk without a canvas application, so have followed steps 1-7 in the quickstart guide up to adding the facebookSettings property in the Web.config.
I have added an image to my page and an onclick event that contains the below code. but when I click the button, it just takes me to the home page (CancelUrlPath).
Changing the Authorizer to a CanvasAuthorizer results in FB loading the login screen, but I get an error 404 not found on the call (even after inserting the handlers into the config)..
fbApp = new FacebookApp();
authorizer = new Authorizer(fbApp) {Perms = requiredAppPermissions};
authorizer.ReturnUrlPath = "http://localhost/User/UserRegister.aspx";
authorizer.CancelUrlPath = "http://localhost/";
if (authorizer.Authorize(this.Context))
{
Response.Write("hello");//never gets here
}
Every 5 minutes automatic take screenshot capture & Save To Database Using WebPages
Is it possible or not?
I am developing an Iframe-Canvas Application.
I am using Master Page to gain permission access & display few details, that works good.
Then on content Page I want to display a textbox & linkbutton so user can post status on their wall & here I get error
(OAuthException) An active access token must be used to query information about the current user.
here's my code :
Site.master.cs
protected void Page_Load(object sender, EventArgs e)
{
var auth = new CanvasAuthorizer { Permissions = new[] { "user_about_me","user_birthday","user_location","offline_access","publish_stream" } };
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I am attempting to create a Facebook IFrame Application using the Facebook Developer's Toolkit (language I'm using is VB). No matter what I do, I cannot get past this error message from Facebook.
App may not request permissions that do not apply to all profiles in the selector
I have tried dropping a CanvasIFrameLoginControl with requirelogin=true
i have also tried inheriting Facebook.Web.CanvasIFrameMasterPage then adding Me.RequireLogin = True to the Page_Init event. Both of these do require login. As soon as I add Required permissions, however, I get the API Error Code 100 - an app may not request permissions that do not apply to all profiles in the selector error from facebook.
i am using this jquery file for image annotations on the image element:
<img id="toAnnotate" src="Images/686.jpg" alt="Trafalgar Square" width="698" height="398" />
And set this src element at page load but after invoking the jquery function on "toannotate" control the full image is not displayed in the 698 by 398 size only some portion of the image is displayed there...why so..?
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To create chartrs on web page(ASP.NET) uding the above link is (WebMethod) workong fine.
But I want to export that chart into Excel,PDF,PPT...
i have readed your post(html5 canvas chart using asp.net)
and now i want to create line chart of chart.js
With reference to example: [URL]
I downloaded it and worked fine. However, I wish you push it further adding the following features:
1- Download button: where after the bitmap is captured and published into the image control, a "Download" button can be clicked to force the client browser open the "Save As File" dialog box in order to enable the user download the image into his/her client machine after choosing his/her suitable directory path.
2- Email button + Textbox to type the target email: where after te bitmap is captured and published into the image control, a "Email" button can be clicked in order to send the captured image to any email the user had specified in the textbox.
Condition:
- Captured image shall remain as bitmap in memory. It shouldn't be saved in the server.
- Email shall be sent with the image placed in the BODY and ATTACHMENT.
I need to capture and save user signature to database on asp.net webform.
I found this plug-in: [URL]
I downloaded the example project and it is very simple, it has only fews file but I could not understand.
demo here: [URL]
How do I use this on a web-form page, let say on "save" button click postback event, it will save the imageurl of the signature under this format:
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAApIAAAE+CAYAAAA+
vvBuAAAgAElEQVR4Xu3de6w1XV0f8K8WvIEiFTAKXhBrab0AxUraaFET0xYxSGrrpSb
UahsjbcUoXhKtIiaaSFSSojHRUP7w0rQGKbZJ00ahN.........
to a string variable so I can save this string to database?
Also how do I use 2 signature fileds in a same page, because I want to capture signature of 2 users.
In my facebook canvas applikation, i store the access token in session. (I use ASP.NET MVC)
But i want to store the access token in a database along with the facebook user id that i can save different access tokens for different facebook users accessing my application.
So when i query the facebook user id and if it doen't return any access token, i request permissions and get the access token for that user.
How do i access the Facebook UserID for the user accessing my canvas application before doing any authentification?
