报告ReportEngineBase修改语言资源文件，修改模板和报告输出功能。

XP.ReportEngine/Services/ExpressionDataBinder.cs

@@ -54,6 +54,9 @@ namespace XP.ReportEngine.Services
                 }
             }
 
+            // 绑定页眉页脚中的表达式 | Bind expressions in header/footer
+            BindHeaderFooter(clonedTemplate, context);
+
             _logger.Info("数据绑定完成 | Data binding completed");
             return clonedTemplate;
         }
@@ -99,6 +102,62 @@ namespace XP.ReportEngine.Services
                     }
                 }
             }
+
+            // Row 子元素递归绑定 | Recursively bind row child elements
+            if (string.Equals(element.Type, "row", StringComparison.OrdinalIgnoreCase)
+                && element.Children != null)
+            {
+                foreach (var child in element.Children)
+                {
+                    BindElement(child, context);
+                    // Column 子元素递归绑定 | Recursively bind column child elements
+                    if (string.Equals(child.Type, "column", StringComparison.OrdinalIgnoreCase)
+                        && child.Children != null)
+                    {
+                        foreach (var subChild in child.Children)
+                        {
+                            BindElement(subChild, context);
+                        }
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// 绑定页眉页脚中的 ${} 表达式 | Bind ${} expressions in header/footer
+        /// </summary>
+        private void BindHeaderFooter(ReportTemplate template, ReportContext context)
+        {
+            if (template?.Document == null) return;
+
+            // 绑定页眉文本 | Bind header text
+            if (template.Document.Header != null && template.Document.Header.Enabled)
+            {
+                BindStringList(template.Document.Header.Left, context);
+                BindStringList(template.Document.Header.Right, context);
+            }
+
+            // 绑定页脚文本 | Bind footer text
+            if (template.Document.Footer != null && template.Document.Footer.Enabled)
+            {
+                BindStringList(template.Document.Footer.Left, context);
+                BindStringList(template.Document.Footer.Right, context);
+            }
+        }
+
+        /// <summary>
+        /// 绑定字符串列表中的表达式 | Bind expressions in string list
+        /// </summary>
+        private void BindStringList(List<string> lines, ReportContext context)
+        {
+            if (lines == null) return;
+            for (int i = 0; i < lines.Count; i++)
+            {
+                if (!string.IsNullOrEmpty(lines[i]))
+                {
+                    lines[i] = ResolveAllExpressions(lines[i], context);
+                }
+            }
         }
 
         private string ResolveAllExpressions(string input, ReportContext context)
@@ -313,10 +372,10 @@ namespace XP.ReportEngine.Services
 
             var format = _localizationService.CurrentLanguage switch
             {
-                SupportedLanguage.ZhCN => "yyyy年MM月dd日",
-                SupportedLanguage.ZhTW => "yyyy年MM月dd日",
-                SupportedLanguage.EnUS => "MM/dd/yyyy",
-                _ => "yyyy-MM-dd"
+                SupportedLanguage.ZhCN => "yyyy年MM月dd日 HH:mm:ss",
+                SupportedLanguage.ZhTW => "yyyy年MM月dd日 HH:mm:ss",
+                SupportedLanguage.EnUS => "MM/dd/yyyy HH:mm:ss",
+                _ => "yyyy-MM-dd HH:mm:ss"
             };
 
             return dateTime.ToString(format);