Call keras model in a C# desktop Application

I have a keras model for image classification saved in a .h5 file or Json file, and then I created a C# desktop app ( in visual studio 2019) which contains two buttons one to load an image and an other to show the result of the prediction. Could any one tell me how can I load my model on the application and use it with the button to make predictions? Please help if you have any ideas. Thanks