Hi PhaniBitra,
If you already have image files, the following way is recommended to take.
1. Double click the "Resources.resx" under the Properties node of your project.
2. Click the "Add Resource" drop down button and choose "Add Existing Files...", you can select the file you need.
3. In your code, add these images to the ImageList like this.
ImageList imgList = new ImageList();
Image image = WindowsFormsApplication1.Properties.Resources.Image1;
imgList.Images.Add(image);
WindowsFormsApplication1 is your project namespace, Image1 is the image you have just added.
If you have anything unclear, please feel free to tell me.
Sincerely,
Kira Qian
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