Develop Reference

How to disable a looping for gif image and save it in c#

In my application, there is an image uploading and if a user wants to upload gif image. I need to disable looping in an image and save it, in the result gif image of a user must be played once and stop after that. Maybe I need to delete pointer from the last frame of gif image? Any ideas?

You need to add or change the Netscape Application extension block. In this block there are 2 bytes to control the looping, see details in the following answer:
https://stackoverflow.com/a/28486261/3936440
I couldn't find a proper package for GIF manipulation but i think you can use BumpKit as an inspiration as mentioned here
https://stackoverflow.com/a/32810041/3936440
or
https://github.com/DataDink/Bumpkit/blob/master/BumpKit/BumpKit/GifEncoder.cs

I found an answer, thank you all who tried to helped me.
The gif image has a set of properties which you can get if you know the specific address of a byte of each property.
For example, 20737 is looping property.
if this property set to 0 gif image will have infinite looping, but if set this property great than 0 gif image will be repeated infinitely. The example I placed here.
var image = System.Drawing.Image.FromFile(path)
var IsLooped = BitConverter.ToInt16(image.GetPropertyItem(20737).Value, 0) != 1;

Improving clarity of images in PictureBox C#

I have Panel on windows form containing labels for displaying information and 2 PictureBox controls. One for Company logo & other for captured photo. When i print them either on Printer or just save in PDF format, both images looking very blur. I want to improve quality of images. So they will appear clear even after zoom.
Any suggestion.

You can set this property of the Graphics object.
// g is type of Graphics.
g.InterpolationMode = InterpolationMode.High;

I don't know which technique you are using for printing but if you are using print form it is not good for decent picture or text. Therefore when you send form/PictureBox to the print object it would lose quality.The Solution is to use PrintDocument.
Share your code for more help.

Your printer has better resolution than your monitor. That bitmap won't work. You will have to recreate the print items directly on the e.Graphics of the PrintPageEventArgs.
Other work around is the technique that guy explain in his article.
http://www.dahuatu.com/3vy2K5z5mr.html

Fast Report Showing Images From Database

Hello everyone who codes. I a working on a project that uses reporting a lot. My problem or i wanna do is: In my folder there are a lot of material images. I am showing material images according to its stock code. For example i have 200 image of my stock parts. 3 of 200 havent got image so their imageUrls are 'null'. Instead of Stock Parts that havent got image, my program shows one before parts image. So i want to do this. If a part hasnt got image , my report wont show image or will show empty white image. I dont know that am i clearly explain my problem. Here is simple code of my report page.
private void Picture1_BeforePrint(object sender, EventArgs e)
{
if ((String)Report.GetColumnValue("Stock_Products.ResimUrl") != null)
Picture1.ImageLocation = ((String)Report.GetColumnValue("Stock_Products.ResimUrl"));
else
{
}
}

You can either try making a white image and saving the link to it as a const and then use that image whenever the url to the part image is null or make a new Bitmap object and fill it with white and use that. The first one is better imo because it's only going to take one variable in your code whilst the bitmap image is going to occupy some lines.

Images Scaling Down in draw in C#

Alright guys last little bit of this project I'll ask for help on I promise.
So I go to load the images, works fine however I notice upon loading that the dimensions of the image have been scaled down in the y to 300 (all are a constant value of 433) and up or down from their original width to 600.
I'm using the following method to load them
foreach (string file in Directory.EnumerateFiles(imagePath, "*.JPG"))
{
Image contents = Image.FromFile(file);
treesImage[count] = contents;
count++;
}
and this is the resulting image when I have it loaded.
http://i.stack.imgur.com/Q40kK.png
As you can see the image below the red rectangle is quite small
Any help would be appreciated. If you require any more information please post below and I'll make sure to edit the original question with the relevant information as soon as humanly possible.
EDIT: I am using a simple windows form application and not another graphical framework for my own reasons.
Thanks in advance :)

I'll assume you are using a PictureBox control to display the image.
When someone chooses a tree from your map, you obviously set the PictureBox Image property to the image object referenced by the index in the array. Use the Image object to set the ClientSize of the PictureBox control.
...
Image img = treesImage[idx];
MyPictureBox.SizeMode = PictureBoxSizeMode.Normal;
MyPictureBox.ClientSize = new Size(img.Width,img.Height);
MyPictureBox.Image = img;
...
Alternately you can define one size for your PictureBox and force all the images to be scaled to that size by setting the control SizeMode property to StretchImage declaratively.
I would recommend that you create a simple class (MyImageInfo for example) that would store the Path, Width, and Height of the images found in your first function into a list and then just as before when a user clicks to view an image you set the width and height of the PictureBox and then call the LoadAsync(path) method to get the image. then you aren't storing all images in memory at once, just as you need them since it doesn't look like this requires a lot of quick jumping from image to image.

Need to select a frame in gif

I need to restart a gif image so it will start from the first frame.
I have little experience with gif images in C#. I work on a C# windows form application. My gif image is in a picturebox. I need to restart it each time a person for example presses a button.
I have tried doing:
pictureBox1.Image.SelectActiveFrame(new FrameDimension(pictureBox1.Image.FrameDimensionsList[0]), 0)
but it didnt show any change.
I also tried Image animator also no luck. I really need help it is for my final project in high school engineering.

I found that Image.SelectActiveFrame() doesn't seem to work because how it works is not what you thought. It just set the initial frame if there is some control reading its frame, the first frame read is the active frame. So after SelectActiveFrame() you have to re-assign the Image property of your pictureBox to that new Image, like this:
private void RestartToFrameIndex(int index){
pictureBox.Image.SelectActiveFrame(new FrameDimension(pictureBox.Image.FrameDimensionsList[0]), index);
pictureBox.Image = pictureBox.Image;
}
//If you want to restart to the first frame, just call the method above like this:
RestartToFrameIndex(0);
That's the general solution I've just found :) hope it helps others...

I tried this solution and It's working fine :
Image animated = pictureBox1.Image;
pictureBox1.Image = animated;
this way , you reset pictureBox1.Image so the animated GIF starts from beginning.