diff --git a/插件库/Lskj.Util/PubUtil.cs b/插件库/Lskj.Util/PubUtil.cs
index f5f4519..8c37414 100644
--- a/插件库/Lskj.Util/PubUtil.cs
+++ b/插件库/Lskj.Util/PubUtil.cs
@@ -123,6 +123,24 @@ namespace Lskj.Util
         }
 
 
+        /// <summary>
+        /// 签章打印临时文件
+        /// </summary>
+        public static string SignatureFilePath
+        {
+            get
+            {
+                string path = AbsolutelyPath + "TempFiles\\SignatureFile/";
+                if (!Directory.Exists(path))
+                {
+                    Directory.CreateDirectory(path);
+                }
+                return path;
+            }
+        }
+
+
+
         public static void ClearFilesInDirectory(string targetDir)
         {
             // 校验目录是否存在
diff --git a/插件库/Lskj.Util/ReplaceHelper.cs b/插件库/Lskj.Util/ReplaceHelper.cs
index 50c1957..074a0c1 100644
--- a/插件库/Lskj.Util/ReplaceHelper.cs
+++ b/插件库/Lskj.Util/ReplaceHelper.cs
@@ -193,8 +193,26 @@ namespace Lskj.Util
         /// <returns><c>true</c> if the specified default value is select; otherwise, <c>false</c>.</returns>
         public static bool IsSelect(string defaultValue)
         {
-            return defaultValue.ToLower().Trim().Trim(new char[] { '\r', '\t', '\n' }).StartsWith(_selectFlag);
+            //return defaultValue.ToLower().Trim().Trim(new char[] { '\r', '\t', '\n' }).StartsWith(_selectFlag);
+            //2026-4-17 之前判断不了开头有注释的情况
+            if (string.IsNullOrWhiteSpace(defaultValue))return false;
+            // 清理：开头所有空白 + 所有单行注释 + 所有多行注释
+            string cleaned = Regex.Replace(
+                defaultValue,
+                @"^\s*(/\*.*?\*/|\s|--.*?$)*",
+                "",
+                RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline
+            );
+            return cleaned.StartsWith("select", StringComparison.OrdinalIgnoreCase);
+
+
         }
+
+
+
+
+
+
         /// <summary>
         /// <para>说明：替换userid、username、groupid</para>
         /// <para>创建人：龚宇超</para>
@@ -226,6 +244,16 @@ namespace Lskj.Util
         /// <returns>System.String.</returns>
         public static string ReplaceUserInfo(string defaultValue, string userId, string userName, string groupId, string password)
         {
+            if (string.IsNullOrEmpty(defaultValue))
+            {
+                return defaultValue;
+            }
+
+            if (defaultValue.IndexOf('{') < 0)
+            {
+                return defaultValue;
+            }
+
             return defaultValue = defaultValue.Replace(_loginid_key, userId, true)
                                        .Replace(_loginname_key, userName, true)
                                        .Replace(_groupid_key, groupId, true)
@@ -241,8 +269,8 @@ namespace Lskj.Util
                                        .Replace(_loginaccount_key, ERPInfo.Instance.LoginAccount + "", true)
                                        .Replace(_accountBook, ERPInfo.Instance.AccountBook + "", true)
                                        .Replace(_loginUserLinkPhone_key, ERPInfo.Instance.UserLinkPhone + "", true)
-                                       .Replace(_mrpTag_key, ERPInfo.Instance.MrpTag + "", true)
-                                       .Replace(_macAddressy, ERPInfo.Instance.MacAddress + "", true); 
+                                       .Replace(_mrpTag_key, ERPInfo.Instance.MrpTag + "", true);
+                                       //.Replace(_macAddressy, ERPInfo.Instance.MacAddress + "", true); 
 
         }
         /// <summary>
diff --git a/插件库/Lskj.Util/extend/StringExtend.cs b/插件库/Lskj.Util/extend/StringExtend.cs
index 47ab8dd..d1d8cd0 100644
--- a/插件库/Lskj.Util/extend/StringExtend.cs
+++ b/插件库/Lskj.Util/extend/StringExtend.cs
@@ -91,30 +91,15 @@ namespace Lskj.Util
         /// <returns>System.String.</returns>
         public static string Replace(this string str, string key, string value, bool ignoreCase)
         {
-            if (string.IsNullOrEmpty(str)) return str;
+            //if (string.IsNullOrEmpty(str)) return str;
 
-            return Regex.IsMatch(str, key, RegexOptions.IgnoreCase) ?
-                System.Text.RegularExpressions.Regex.Replace(str, key, value, ignoreCase ? RegexOptions.IgnoreCase : RegexOptions.None)
-                : str;
-        }
-        /// <summary>
-        /// <para>说明：</para>
-        /// <para>创建人：龚宇超</para>
-        /// <para>创建日期： </para>
-        /// <para>修改人：</para>
-        /// <para>修改日期：</para>
-        /// <para>修改备注：</para>
-        /// <para>版本：1.0</para>
-        /// </summary>
-        /// <param name="text">The text.</param>
-        public static bool IsChinese(this string text)
-        {
-            for (int i = 0; i < text.Length; i++)
+            //return Regex.IsMatch(str, key, RegexOptions.IgnoreCase) ?
+            //    System.Text.RegularExpressions.Regex.Replace(str, key, value, ignoreCase ? RegexOptions.IgnoreCase : RegexOptions.None)
+            //    : str;
+            if (string.IsNullOrEmpty(str) || string.IsNullOrEmpty(key))
             {
-                if ((int)text[i] > 127)
-                    return true;
+                return str;
             }
-            return false;
-        }
-    }
-}
+
+            var comparison = ignoreCase
+                ? StringComparison.Ordinal
\ No newline at end of file