diff --git a/src/NSExt/Extensions/ByteExtensions.cs b/src/NSExt/Extensions/ByteExtensions.cs
index 0e6d4cf..b443098 100644
--- a/src/NSExt/Extensions/ByteExtensions.cs
+++ b/src/NSExt/Extensions/ByteExtensions.cs
@@ -42,11 +42,11 @@ public static class ByteExtensions
     /// <param name="upperCase">是否大写</param>
     /// <param name="splitShar">字节间分隔符</param>
     /// <returns></returns>
-    public static string String(this byte[] me, bool upperCase = true, char? splitShar = '-')
+    public static string String(this byte[] me, bool upperCase = true, string splitShar = null)
     {
-        var ret                                            = BitConverter.ToString(me);
-        if (!upperCase) ret                                = ret.ToLower();
-        if (splitShar is not null && splitShar != '-') ret = ret.Replace('-', splitShar.Value);
+        var ret                   = BitConverter.ToString(me);
+        if (!upperCase) ret       = ret.ToLower();
+        if (splitShar != "-") ret = ret.Replace("-", splitShar ?? string.Empty);
         return ret;
     }
 }
\ No newline at end of file
diff --git a/src/NSExt/NSExt.csproj b/src/NSExt/NSExt.csproj
index f800d1f..117fe67 100644
--- a/src/NSExt/NSExt.csproj
+++ b/src/NSExt/NSExt.csproj
@@ -3,7 +3,7 @@
     <PropertyGroup>
         <TargetFrameworks>net6.0;net7.0</TargetFrameworks>
         <ImplicitUsings>enable</ImplicitUsings>
-        <Version>1.0.5</Version>
+        <Version>1.0.6</Version>
     </PropertyGroup>
 
     <ItemGroup>