How to put it image in WPF stackpanel?

If you have saved the image as a file, then you can just use the Image control of WPF framework and have it rendered for you, Image Class (System.Windows.Controls) | Microsoft Docs[^]

The Image control - The complete WPF tutorial[^]

Now for the second part of your question,

Quote:

I want to create C destination

Then change the path for the image, to something like this,

// Assuming that Images folder does exist. 
result.Save("C:\\Images\\" + DateTime.Now.Ticks + ".JPEG");

This will create the image in that folder, then you can use the same file and show it in the WPF. One thing to notice here is that after this code executes you will miss the value for DateTime.Now.Ticks, so better to store it as a variable.

var ticks = DateTime.Now.Ticks; 
var path = $@"C:\Images\{ticks}.JPEG";
result.Save(path);

// Show the image in WPF using the path variable as source. 

You can read how to set the source for an Image control in the link I provided above.