Drag-and-Drop multiple Attached File From Outlook to C# Window Form

I solve my problem Just add that code in any cs file. using System; using System.IO; using System.Collections.Generic; using System.Runtime.InteropServices; using System.Runtime.InteropServices.ComTypes; using System.Text; using System.Reflection; using System.Windows.Forms; namespace iwantedue.Windows.Forms { public class OutlookDataObject: System.Windows.Forms.IDataObject { #region NativeMethods private class NativeMethods { [DllImport(“kernel32.dll”)] static extern IntPtr GlobalLock(IntPtr hMem); [DllImport(“ole32.dll”, PreserveSig = false)] public static extern … Read more