diff --git a/src/Output-v5-0/DataContext/SqlParameterExtensions.base.cs b/src/Output-v5-0/DataContext/SqlParameterExtensions.base.cs
index d0a396c..1f8bc2e 100644
--- a/src/Output-v5-0/DataContext/SqlParameterExtensions.base.cs
+++ b/src/Output-v5-0/DataContext/SqlParameterExtensions.base.cs
@@ -38,7 +38,7 @@ public static IEnumerable<SqlDataRecord> ToSqlParamCollection<T>(this T value)
                     var propName = property.Name;
                     var sqlType = AppDbContext.GetSqlDbType(property.PropertyType);
 
-                    if (sqlType == SqlDbType.NVarChar)
+                    if (sqlType == SqlDbType.NVarChar || sqlType == SqlDbType.VarBinary)
                     {
                         var maxLengthAttribute = (MaxLengthAttribute)property.GetCustomAttributes(typeof(MaxLengthAttribute), false).FirstOrDefault();
                         if (maxLengthAttribute != null)
@@ -115,4 +115,4 @@ public static IEnumerable<SqlDataRecord> ToSqlParamCollection<T>(this T value)
             return result;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Output/DataContext/SqlParameterExtensions.base.cs b/src/Output/DataContext/SqlParameterExtensions.base.cs
index d0a396c..1f8bc2e 100644
--- a/src/Output/DataContext/SqlParameterExtensions.base.cs
+++ b/src/Output/DataContext/SqlParameterExtensions.base.cs
@@ -38,7 +38,7 @@ public static IEnumerable<SqlDataRecord> ToSqlParamCollection<T>(this T value)
                     var propName = property.Name;
                     var sqlType = AppDbContext.GetSqlDbType(property.PropertyType);
 
-                    if (sqlType == SqlDbType.NVarChar)
+                    if (sqlType == SqlDbType.NVarChar || sqlType == SqlDbType.VarBinary)
                     {
                         var maxLengthAttribute = (MaxLengthAttribute)property.GetCustomAttributes(typeof(MaxLengthAttribute), false).FirstOrDefault();
                         if (maxLengthAttribute != null)
@@ -115,4 +115,4 @@ public static IEnumerable<SqlDataRecord> ToSqlParamCollection<T>(this T value)
             return result;
         }
     }
-}
\ No newline at end of file
+}