全局处理问题：public static Model.SGGLDB db = Funs.DB;

SGGL/BLL/Common/ProjectDataFlowSetService.cs

@@ -9,7 +9,7 @@
     /// </summary>
     public static class ProjectDataFlowSetService
     {
-        public static Model.SGGLDB db = Funs.DB;
+        
         /// <summary>
         /// 记录数
         /// </summary>
@@ -27,6 +27,7 @@
         /// <returns></returns>
         public static IEnumerable getListData(string dataId, int startRowIndex, int maximumRows)
         {
+            Model.SGGLDB db = Funs.DB;
             IQueryable<Model.View_ProjectData_FlowOperate> q = from x in db.View_ProjectData_FlowOperate
                                                                where x.DataId == dataId && x.IsClosed == true
                                                                orderby x.SortIndex descending
@@ -168,6 +169,7 @@
         /// </summary>
         public static void CloseFlowOperate(string menuId, string dataId, string opinion)
         {
+            Model.SGGLDB db = Funs.DB;
             var updateUnFlowOperate = db.ProjectData_FlowOperate.FirstOrDefault(x => x.MenuId == menuId && x.DataId == dataId && (x.IsClosed == false || !x.IsClosed.HasValue));
             if (updateUnFlowOperate != null)
             {
@@ -311,6 +313,7 @@
         /// <param name="dataId">主表主键Id</param>
         public static bool IsExitOperate(string menuId, string dataId)
         {
+            Model.SGGLDB db = Funs.DB;
             return (from x in db.ProjectData_FlowOperate
                     where x.MenuId == menuId && x.DataId == dataId
                     select x).Count() > 0;