压缩失败提示

PDF Office/Model/Dialog/ToolsDialogs/CompressDialogModel/CompressDialogModel.cs

@@ -1,9 +1,11 @@
 using ComPDFKit.PDFDocument;
 using Microsoft.Office.Interop.Word;
+using PDF_Master.CustomControl;
 using PDF_Master.Helper;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -54,6 +56,13 @@ namespace PDF_Master.Model.Dialog.ToolsDialogs
                 int compressquality = 45;
                 doc = e.Parameters.GetValue<CPDFDocument>(ParameterNames.PDFDocument);
                 filepath = e.Parameters.GetValue<string>(ParameterNames.FilePath);
+                try { if (File.Exists(filepath)) File.Delete(filepath); }
+                catch
+                {
+                    AlertsMessage alertsMessage = new AlertsMessage();
+                    alertsMessage.ShowDialog("", App.MainPageLoader.GetString("FileNotExistWarning"), App.ServiceLoader.GetString("Text_ok"));
+                    return;
+                }
                 password = e.Parameters.GetValue<string>(ParameterNames.PassWord);
                 compressquality = e.Parameters.GetValue<int>("compressDialogModel.CompressQuality");
                 if (doc != null)
@@ -71,12 +80,16 @@ namespace PDF_Master.Model.Dialog.ToolsDialogs
                     tempDocument = document;
                     Trace.WriteLine("compressDialogModel.CompressQuality" + compressquality);
                     App.mainWindowViewModel.ProcessCloseAction = CompressClear;
-                    if (await Task.Run<bool>(() => { return document.CompressFile_Start(compressingIntpr, filepath); })) { CommonHelper.ShowFileBrowser(filepath);  }
+                    if (await Task.Run<bool>(() => { return document.CompressFile_Start(compressingIntpr, filepath); })) {
+                        CommonHelper.ShowFileBrowser(filepath); 
+                    }
 
                     document.Release();
                 }
             }
             catch {
+                AlertsMessage alertsMessage = new AlertsMessage();
+                alertsMessage.ShowDialog("", "Compress file error", App.ServiceLoader.GetString("Text_ok"));
                 tempDocument.CompressFile_Cancel(compressingIntpr);
                 App.mainWindowViewModel.IsProcessVisible = System.Windows.Visibility.Collapsed;
             }