diff --git a/插件库/Lskj.ProductSched/FrmProductSched.cs b/插件库/Lskj.ProductSched/FrmProductSched.cs
index 22e6f32..d4adef1 100644
--- a/插件库/Lskj.ProductSched/FrmProductSched.cs
+++ b/插件库/Lskj.ProductSched/FrmProductSched.cs
@@ -2001,17 +2001,42 @@ namespace Lskj.ProductiSched
                     }
                 }
             }
+            // **6. 解决渲染问题**
+            if (!dataMain.Columns.Contains("PrecomputedMaxDate"))
+            {
+                dataMain.Columns.Add("PrecomputedMaxDate", typeof(string));
+            }
+
+            foreach (DataRow row in dataMain.Rows)
+            {
+                DateTime? maxDate = null; // 初始化为 null，表示尚未找到有效日期
+                foreach (DataColumn column in row.Table.Columns)
+                {
+                    // 检查列是否为日期类型，这里假设您已确保列名适当反映了它们是日期类型
+                    if (DateTime.TryParse(column.ToString(), out DateTime tempDate))
+                    {
+                        if (!string.IsNullOrEmpty(row[column] + "")) // 只有在找到更大的日期时才更新
+                        {
+                            if (maxDate == null || tempDate > maxDate)
+                            {
+                                maxDate = tempDate;
+                            }
+                        }
+                    }
+                }
+                // 赋值操作，确保为字符串格式
+                row["PrecomputedMaxDate"] = maxDate.HasValue ? maxDate.Value.ToString("yyyy-MM-dd") : "";
+            }
             return dataMain;
         }
-
-        /// <summary>
-        /// 构建带日期的数据源
-        /// </summary>
-        /// <param name="focusedRow"></param>
-        /// <param name="dataDayPlan"></param>
-        /// <param name="startDate"></param>
-        /// <returns></returns>
-        private void UpdateRowWithDayPlan(DataRow focusedRow, DataTable dataDayPlan, DateTime startDate)
+            /// <summary>
+            /// 构建带日期的数据源
+            /// </summary>
+            /// <param name="focusedRow"></param>
+            /// <param name="dataDayPlan"></param>
+            /// <param name="startDate"></param>
+            /// <returns></returns>
+            private void UpdateRowWithDayPlan(DataRow focusedRow, DataTable dataDayPlan, DateTime startDate)
         {
             string rightPrimaryKey = DataModel.RightModuleModel.ParmaryKey;
             string topPrimaryKey = DataModel.TopModuleModel.ParmaryKey;