diff --git a/Falcon.SugarApi.Test/StringExtendTest.cs b/Falcon.SugarApi.Test/StringExtendTest.cs
index 2851890..1c9779e 100644
--- a/Falcon.SugarApi.Test/StringExtendTest.cs
+++ b/Falcon.SugarApi.Test/StringExtendTest.cs
@@ -1,13 +1,8 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Falcon.SugarApi;
 
 namespace Falcon.SugarApi.Test
 {
+
     /// <summary>
     /// 字符串扩展方法测试
     /// </summary>
diff --git a/Falcon.SugarApi/StringExtend.cs b/Falcon.SugarApi/StringExtend.cs
index 4da479d..ec0b773 100644
--- a/Falcon.SugarApi/StringExtend.cs
+++ b/Falcon.SugarApi/StringExtend.cs
@@ -39,17 +39,38 @@ namespace Falcon.SugarApi
         public static string[] SplitStr(this string? str, params char[] splitChars)
             => str.IsNullOrEmpty() ? Array.Empty<string>() : str.Split(splitChars.Length == 0 ? new char[] { ',', '，', ';', '；', '.', '。' } : splitChars, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
 
+
         /// <summary>
-        /// 将字符串转换为DateTime
+        /// 将字符串按格式转换为时间格式
         /// </summary>
-        /// <param name="str">表示日期时间的字符串</param>
-        /// <param name="dateTimeformat">日期时间格式</param>
-        /// <returns>一个DateTime对象。如果失败返回null</returns>
-        public static DateTime ToDateTime([NotNull] this string str, string dateTimeformat = "") {
-            if (dateTimeformat.IsNullOrEmpty()) {
+        /// <param name="str">时间字符串</param>
+        /// <param name="dateTimeFormat">时间格式</param>
+        /// <param name="culture">区域特性.默认CultureInfo.InvariantCulture</param>
+        /// <returns>时间</returns>
+        public static DateTime ToDateTime(this string str, string dateTimeFormat = "", CultureInfo? culture = null) {
+            culture ??= CultureInfo.InvariantCulture;
+            if (dateTimeFormat.IsNullOrEmpty()) {
                 return DateTime.Parse(str);
             }
-            return DateTime.ParseExact(str, dateTimeformat, CultureInfo.CurrentCulture);
+            return DateTime.ParseExact(str, dateTimeFormat, culture);
+        }
+        /// <summary>
+        /// 尝试将特定格式字符串转换为DateTime类型
+        /// </summary>
+        /// <param name="str">时间字符串</param>
+        /// <param name="dateTimeFormat">时间格式</param>
+        /// <param name="dt">转换后的时间</param>
+        /// <param name="culture">区域特性.默认CultureInfo.InvariantCulture</param>
+        /// <returns>成功True，失败False</returns>
+        public static bool TryToDateTime(this string str, string dateTimeFormat, out DateTime dt, CultureInfo? culture = null) {
+            try {
+                dt = str.ToDateTime(dateTimeFormat, culture);
+                return true;
+            }
+            catch (Exception) {
+                dt = default;
+                return false;
+            }
         }
     }
 }