diff --git a/DOAN.Service/MES/mm/MmPreparantTaskService.cs b/DOAN.Service/MES/mm/MmPreparantTaskService.cs
index 6ca3614..3ffc170 100644
--- a/DOAN.Service/MES/mm/MmPreparantTaskService.cs
+++ b/DOAN.Service/MES/mm/MmPreparantTaskService.cs
@@ -174,7 +174,15 @@ namespace DOAN.Service.MES.mm
         /// <returns></returns>
         public int DeleteTask(string task_code)
         {
-            return Context.Deleteable<MmPreparationTask>().Where(it => it.TaskCode == task_code).ExecuteCommand();
+            int result = 0;
+            UseTran2(() =>
+            {
+                result+= Context.Deleteable<MmTaskMaterialInfo>().Where(it => it.FkTaskCode == task_code).ExecuteCommand();
+                result+= Context.Deleteable<MmPreparationTask>().Where(it => it.TaskCode == task_code).ExecuteCommand();
+            });
+
+            return result;
+         
         }
 
 
@@ -182,6 +190,7 @@ namespace DOAN.Service.MES.mm
         {
             int result = 0;
             MmTaskMaterialInfo info = new MmTaskMaterialInfo();
+            info.Id = XueHua;
             info.FkTaskCode = parm.FkTaskCode;
             info.MaterialCode = parm.MaterialCode;
             BaseMaterialList material = null;
@@ -205,7 +214,7 @@ namespace DOAN.Service.MES.mm
 
 
             result += x.AsInsertable.ExecuteCommand();
-            result += x.AsUpdateable.IgnoreColumns(z => new { z.CreatedBy, z.CreatedTime, z.MaterialName, z.Specification, z.Unit }).ExecuteCommand();
+            result += x.AsUpdateable.IgnoreColumns(z => new {z.Id, z.CreatedBy, z.CreatedTime, z.MaterialName, z.Specification, z.Unit }).ExecuteCommand();
 
             return result;