Fix: Fixed an issue where the conflicts dialog didn't append numbers when pasting files

src/Files.App/Utils/Storage/Operations/FileOperationsHelpers.cs

@@ -582,7 +582,7 @@ public static Task<(bool, ShellOperationResult)> CopyItemAsync(string[] fileToCo
 						using ShellFolder shd = new(Path.GetDirectoryName(copyDestination[i]));
 
 						// Performa copy operation
-						op.QueueCopyOperation(shi, shd, Path.GetFileName(copyDestination[i]));
+						op.QueueCopyOperation(shi, shd, GetIncrementalName(overwriteOnCopy, copyDestination[i], fileToCopyPath[i]));
 					}))
 					{
 						shellOperationResult.Items.Add(new ShellOperationItemResult()
@@ -1018,5 +1018,27 @@ protected override void Dispose(bool disposing)
 				}
 			}
 		}
+
+		public static string GetIncrementalName(bool overWriteOnCopy, string? filePathToCheck, string? filePathToCopy)
+		{
+			if (filePathToCheck == null)
+				return null;			
+
+			if ((!Path.Exists(filePathToCheck)) || overWriteOnCopy || filePathToCheck == filePathToCopy)
+				return Path.GetFileName(filePathToCheck);
+
+			int i = 2;
+			string filePath = filePathToCheck;
+			if (Path.HasExtension(filePathToCheck))
+				filePath = filePathToCheck.Substring(0, filePathToCheck.LastIndexOf("."));
+
+			Func<int, string> genFilePath = x => string.Concat([filePath, " (", x.ToString(), ")", Path.GetExtension(filePathToCheck)]);
+
+			while (Path.HasExtension(filePathToCheck) ? File.Exists(genFilePath(i)) : Path.Exists(genFilePath(i)))
+			{
+				i = i+1;				
+			}
+			return Path.GetFileName(genFilePath(i));									
+		}		
 	}
 }