OpenBve.Interface.ConvertNewlinesToCrLf C# (CSharp) Method

		internal static string ConvertNewlinesToCrLf(string Text) {
			System.Text.StringBuilder Builder = new System.Text.StringBuilder();
			for (int i = 0; i < Text.Length; i++) {
				int a = char.ConvertToUtf32(Text, i);
				if (a == 0xD & i < Text.Length - 1) {
					int b = char.ConvertToUtf32(Text, i + 1);
					if (b == 0xA) {
						Builder.Append("\r\n");
						i++;
					} else {
						Builder.Append("\r\n");
					}
				} else if (a == 0xA | a == 0xC | a == 0xD | a == 0x85 | a == 0x2028 | a == 0x2029) {
					Builder.Append("\r\n");
				} else if (a < 0x10000) {
					Builder.Append(Text[i]);
				} else {
					Builder.Append(Text.Substring(i, 2));
					i++;
				}
			} return Builder.ToString();
		}

        private void routeWorkerThread_completed(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                TryLoadImage(pictureboxRouteImage, "route_error.png");
                textboxRouteDescription.Text     = e.Error.Message;
                textboxRouteEncodingPreview.Text = "";
                pictureboxRouteMap.Image         = null;
                pictureboxRouteGradient.Image    = null;
                Result.RouteFile          = null;
                checkboxTrainDefault.Text = Interface.GetInterfaceString("start_train_usedefault");
                return;
            }
            try
            {
                pictureboxRouteMap.Image      = Illustrations.CreateRouteMap(pictureboxRouteMap.Width, pictureboxRouteMap.Height, false);
                pictureboxRouteGradient.Image = Illustrations.CreateRouteGradientProfile(pictureboxRouteGradient.Width,
                                                                                         pictureboxRouteGradient.Height, false);
                // image
                if (Game.RouteImage.Length != 0)
                {
                    try
                    {
                        pictureboxRouteImage.Image = Image.FromFile(Game.RouteImage);
                    }
                    catch
                    {
                        TryLoadImage(pictureboxRouteImage, "route_error.png");
                    }
                }
                else
                {
                    string[] f = new string[] { ".png", ".bmp", ".gif", ".tiff", ".tif", ".jpeg", ".jpg" };
                    int      i;
                    for (i = 0; i < f.Length; i++)
                    {
                        string g = OpenBveApi.Path.CombineFile(System.IO.Path.GetDirectoryName(Result.RouteFile),
                                                               System.IO.Path.GetFileNameWithoutExtension(Result.RouteFile) + f[i]);
                        if (System.IO.File.Exists(g))
                        {
                            try
                            {
                                pictureboxRouteImage.Image = Image.FromFile(g);
                            }
                            catch
                            {
                                pictureboxRouteImage.Image = null;
                            }
                            break;
                        }
                    }
                    if (i == f.Length)
                    {
                        TryLoadImage(pictureboxRouteImage, "route_unknown.png");
                    }
                }

                // description
                string Description = Interface.ConvertNewlinesToCrLf(Game.RouteComment);
                if (Description.Length != 0)
                {
                    textboxRouteDescription.Text = Description;
                }
                else
                {
                    textboxRouteDescription.Text = System.IO.Path.GetFileNameWithoutExtension(Result.RouteFile);
                }
                textboxRouteEncodingPreview.Text = Interface.ConvertNewlinesToCrLf(Description);
                if (Game.TrainName != null)
                {
                    checkboxTrainDefault.Text = Interface.GetInterfaceString("start_train_usedefault") + @" (" + Game.TrainName + @")";
                }
                else
                {
                    checkboxTrainDefault.Text = Interface.GetInterfaceString("start_train_usedefault");
                }
            }
            catch (Exception ex)
            {
                TryLoadImage(pictureboxRouteImage, "route_error.png");
                textboxRouteDescription.Text     = ex.Message;
                textboxRouteEncodingPreview.Text = "";
                pictureboxRouteMap.Image         = null;
                pictureboxRouteGradient.Image    = null;
                Result.RouteFile          = null;
                checkboxTrainDefault.Text = Interface.GetInterfaceString("start_train_usedefault");
            }


            if (checkboxTrainDefault.Checked)
            {
                ShowDefaultTrain();
            }

            this.Cursor = Cursors.Default;
            //Deliberately select the tab when the process is complete
            //This hopefully fixes another instance of the 'grey tabs' bug
            tabcontrolRouteDetails.SelectedTab = tabpageRouteDescription;

            buttonStart.Enabled = Result.RouteFile != null & Result.TrainFolder != null;
        }