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by Sarvesh Kumar Gupta
How to Create watermarked images in C# ASP.NET ?

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by Sarvesh Kumar Gupta
How to Create watermarked images in C# ASP.NET ?

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6 Mar 2014 by Pranav-BiTwiser
just add placeholder attribut to your .aspx code of textboxe.g:-
17 Apr 2012 by Sergey Alexandrovich Kryukov
Sorry if it is not helping you. With a busy background, this is extremely difficult to do it the way which would make the change unnoticeable, because a human eye has unprecedented integration ability.The simple theoretical obstacle for solving this problem is that the part of information...
5 May 2013 by Sergey Alexandrovich Kryukov
Please see my comment to the question. You cannot ask questions this way.However, I think I know how to solve the problem. My guess is: your exception is thrown in this call:http://msdn.microsoft.com/en-us/library/system.drawing.graphics.fromimage.aspx[^].If works for most images, but...
5 May 2013 by Orcun Iyigun
Since GDI+ graphics object doesn't support indexed images. I assume you were using Image in your code so that you end up getting that exception. To overcome it you should convert your Image to Bitmap.try{ Image img = Image.FromStream(new MemoryStream(image)); // OR from file I dont...
23 Nov 2013 by Dave Kreskowiak
Quite easily. The placeholder attribute is no different than any other attribute on any HTML control. http://msdn.microsoft.com/en-us/library/7a9d6h4f(v=vs.100).aspx[^]
13 Aug 2015 by Sergey Alexandrovich Kryukov
Probably what you want is steganography: https://en.wikipedia.org/wiki/Steganography[^].To get some particular help, you would need to indicate what kind of UI you want to use. For System.Drawing the solution would be different from WPF, or something else. Anyway, you will find a lot of...
4 Nov 2016 by OriginalGriff
Since you don't show us where you save the file, we can't be sure what format you are saving it in - and that makes a huge difference to the file size and is likely to be related to your problem.If for example, the input file is a JPG and you save it as a BMP, then it will grow in size...
14 Apr 2012 by rasha.MSH
Hi..please i need a help..There are a gray horizontal lines in the image that i have extracted after watermarkinghow can i remove these lines ?!?
17 Apr 2012 by rasha.MSH
Hi..Where can I get the StirMark Benchmark for video watermarkingThanks
17 Apr 2012 by Mehdi Gholam
You really should use a site called www.Google.com it does searches on keywords and finds websites!Here is what it found : http://www.petitcolas.net/fabien/watermarking/stirmark/[^]
23 Nov 2013 by aravindnass
hey... I am using a web application.. I use placeholder to display watermark on a texbox(eg:- placeholder="write") in source code. Can I write placaholder behind the code...Any idea.?
6 Mar 2014 by jayraj86
I want the javascript code to add watermark in textboxes like its in twitter and facebook. same as search box in this link here
9 Aug 2014 by DevX007
♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥~Watch NFL Live http://live-tvstreaming.com/nf ~♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥~Watch NFL Live http://live-tvstreaming.com/nf ~♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥~Watch NFL Live http://live-tvstreaming.com/nf ~♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥~Watch NFL Live...
10 Feb 2015 by Member 11441937
I have many doubts in DCT. First we have to convert the RGB image into YCbCr and then divide it into 8x8 blocks. When we divide we get 64 images .How this is converted into 8x8 matrix. Which is the DC Coefficients and AC cofficients.Whether in all 64 images, coordinates(0,0) is the DC...
26 Feb 2015 by Sergey Alexandrovich Kryukov
Not sure if this suitable for the Quick Questions & Answers forum. Such things are hard to explain in few lines of sample code. You can find good deal of material here: http://bit.ly/1Axoxj9[^].—SA
13 Aug 2015 by Kasthuri Gunabalasingam
I'm doing a project in invisible digital image watermarking using c#. In that project I want to do a task : After embedding watermark image in to cover image, it have to generate a secret code (like which watermark image information is embedded in to particular pixel in cover image)for help to...
19 Sep 2015 by MrCoder BoxWeb
hello i need add multi watermark (cmyk) in a background and save cmyk using c#. need source or code for create program convert multi image in background and save cmyk. just save cmyk because for print picture just is cmyk color.
19 Sep 2015 by Abhinav S
You could use some third parties to add a watermark for e.g. How to programmatically add a WATERMARK to PDF documents[^].You could also try - Build a Simple Watermarking Utility in C#[^].
23 Sep 2015 by MrCoder BoxWeb
hii need save picture cmyk.your link save picture rgb.so can you help me at save cmyk format color?
26 Dec 2015 by sai krishna
i am trying to convert aspx page to pdf with water mark image but did not get water mark for all pages i get only one page any one can resolve it? pdfDoc.Open(); htmlparser.Parse(sr); iTextSharp.text.Image tsipasswm = ...
6 Jan 2016 by ridoy
Check options from here:Adding watermark bitmap over video in android: 4.3's MediaMuxer or ffmpeg - Stack Overflow[^]
18 Nov 2018 by Member 10549697
private void Login_Load(object sender, EventArgs e){ textBox1.Text = "Email"; textBox1.ForeColor = Color.Gray; textBox2.Text = "Password"; textBox2.ForeColor = Color.Gray; panel8.Visible = false; panel7.Visible = false; // textBox1.ForeColor =...
22 Aug 2016 by GoodJuJu
I have a ComboBox on my application which displays a watermark 'Search...'The watermark is added using CB_SETCUEBANNER: 'Private Const EM_SETCUEBANNER As Integer = &H1501 (TextBox) Private Const CB_SETCUEBANNER As Integer = &H1703 '(ComboBox) ...
17 Sep 2016 by Stefan Ionescu Freelancing
I am trying to programmatically watermark a video in Android using WritingMinds' Ffmpeg library from Github :https://github.com/WritingMinds/ffmpeg-android-javaI did all they said in their documentation and imported the library in Android Studio.Still, it gives me an IOExeption with...
4 Nov 2016 by Member 11266633
I use class from this article Using Trigonometry and Pythagoras to WaterMark an Image[^] All work good, but after applying watermark size of image increase greatly. If input file have size 144 kb - in ouptut it increase to 640kb. Why it so?public class WaterMark { private string...
23 Oct 2018 by Knightwalker
Hi, I have a Dot.Net 3.5 winforms control with a TextBox control. This TextBox accepts uppercase letters and numbers. If a value is entered, the currently maximum value should be displayed as a watermark behind the cursor. Example: Input "A1C" and the maximum value is "A1CDB1", then "A1C"...
22 Jan 2019 by Umesh_dmt
make sure all the files available on path which you provide on script. Follow the below example -y -i /storage/emulated/0/Pictures/HelloCamera/VID_TESTING_20190123_124845.mp4 -i /storage/3636-3861/ic_launcher_incode.png -filter_complex [0][1]overlay=10:main_h-overlay_h-10...
19 Dec 2016 by KarstenK
It sounds very easy, but you must change every frame of your video to show a watermark. The article Creating a Watermarked Photograph with GDI+ for .NET explains the process for a photo.So you need to decode, than add the watermark and then recode your video. Quite a lot of work not only...
3 Feb 2012 by Sarvesh Kumar Gupta
How to Create watermarked images in C# ASP.NET ?
31 Mar 2016 by Karthik_Mahalingam
Check out these ready-made answers CodeProject:WaterMark TextBox For Desktop Applications /a>[^]c# - Watermark for Textbox - Stack Overflow[^]WaterMark TextBox In Windows Applications [^]
19 Dec 2016 by S.A.K
Hi,Is there any way to edit/convert/export video with watermark image without using any third party component and software in c# or wpf.If anyone know the information regarding this kindly please let me know.Thanks in advance,S.KWhat I have tried:I did using ffmpeg...
6 Mar 2014 by JB0301
it's simple. No need to use java script or jquery just add placeholder="your water mark" on your textbox control
6 May 2013 by riangel
Hi..I'm watermarking images using C# with a .png image.all the .jpg, .bmp, .png images are getting watermarked perfectly but when watermarking .tifand .gif images error occurs.error message : "A Graphics object cannot be created from an image that has an indexed pixel format."for...
3 Jun 2013 by Hitesh Rohilla
I am working on a video processing project and using ffmpeg for watermarking. I achieve exactly what i want but the problem is that the process is very very slow.I am using a Intel Smart 2nd gen family Core-i5 Processor with 4GB RAM on a 32 bit operating system Microsoft Windows-8 on a...
19 Jun 2013 by Hitesh Rohilla
I want to create a video with watermark change its position to corners every 2 minutes. i found this nice sourceAdding a dynamically positioned watermark to a video via ffmpegbut that don't work to create logo at random corner locations...all the four outputs in code mentioned in...
14 Jun 2013 by Sergey Alexandrovich Kryukov
Please see: http://www.idude.net/index.php/how-to-watermark-a-video-using-ffmpeg/[^].—SA
6 Mar 2014 by Shelby Robertson
This is a good start:TextBox Watermark Using JavaScript and CSS[^]
6 Mar 2014 by Snehasish_Nandy
Refercreate-watermark-textbox-using-javascript[^]
26 Feb 2015 by Kasthuri Gunabalasingam
I'm doing a project on invisible robust watermarking for image security. I have to develop algorithms to accomplish following tasks.Construct watermark that cannot be totally removed from an image. Also i have to come up with an algorithm that provides ownership authenticity.What...
6 Jan 2016 by Reuben CodeHeroes
I am trying to achieve a cross-platform video watermarker using Xamarin.I need to watermark the video after it has been capture or picked from gallery.I have realized that I will need to have individual implementations in iOS and Android.I am able to watermark a video in iOS using the...
18 Nov 2018 by Member 13942300
Create 2 identical text boxes on a windows form. Name them "RealTextBox" (set tab index to 1) and "WatermarkTextBox" (set tab index to 0, set fore color to gray). Position WatermarkTextBox exactly on top of RealTextBox, so that the latter is not visible. Create a "TextChanged event" for each...