移交尾项管理文件导出后，没有删除冗余文件问题处理

SGGL/FineUIPro.Web/Transfer/PunchlistFrom.aspx.cs

@@ -13,6 +13,8 @@ using System.Data.SqlClient;
 using System.Drawing.Imaging;
 using System.IO;
 using System.Linq;
+using System.Net;
+using System.Text;
 using System.Web.Services.Description;
 using static System.Windows.Forms.VisualStyles.VisualStyleElement.StartPanel;
 
@@ -530,6 +532,8 @@ namespace FineUIPro.Web.Transfer
                 ShowNotify("没有要导出的数据！！！", MessageBoxIcon.Warning);
                 return;
             }
+            try
+            {
                 newUrl = uploadfilepath.Replace("导出模板", "导出数据").Replace(".xlsx", DateTime.Now.ToString("yyyyMMddHHmmss") + ".xlsx");
                 File.Copy(uploadfilepath, newUrl);
                 NPOI.SS.UserModel.IWorkbook workbook;
@@ -714,5 +718,20 @@ namespace FineUIPro.Web.Transfer
                 Response.Close();
                 File.Delete(newUrl);
             }
+            catch (WebException ex)
+            {
+                if (File.Exists(newUrl))
+                {
+                    File.Delete(newUrl);
+                }
+            }
+            finally
+            {
+                if (File.Exists(newUrl))
+                {
+                    File.Delete(newUrl);
+                }
+            }
+        }
     }
 }