bota 缩略图-打印优化

PDF Office/ViewModels/PageEdit/PageEditContentViewModel.cs

@@ -1873,16 +1873,19 @@ namespace PDF_Master.ViewModels.PageEdit
         /// </summary>
         public async void print(List<int> SelectedPages)
         {
-
             //保存并继续，使用了高级功能则弹窗权益弹窗
             if (!viewContentViewModel.saveFile(true))
             {
                 return;
             }
-            await App.Current.Dispatcher.InvokeAsync(() =>
-                  {
-                      PDFViewer.GoToPage(listSelecedIndex);
-                  });
+            if (ListSelectedIndex != -1)
+            {
+                await App.Current.Dispatcher.InvokeAsync(() =>
+                {
+                    PDFViewer.GoToPage(ListSelectedIndex);
+                });
+            }
+
             DialogParameters printValue = new DialogParameters();
             printValue.Add(ParameterNames.PDFViewer, PDFViewer);
             printValue.Add(ParameterNames.FilePath, PDFViewer.Document.FileName);