diff --git a/Extensions/xIdentityModelsExtensions.cs b/Extensions/xIdentityModelsExtensions.cs
index 2f1282f..654c29e 100644
--- a/Extensions/xIdentityModelsExtensions.cs
+++ b/Extensions/xIdentityModelsExtensions.cs
@@ -147,5 +147,29 @@ namespace xIdentityModels.Extensions
             //
             return result;
         }
+
+        /// <summary>
+        /// Check Specified User Contains Specified UserSelectByParam or not ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <param name="userSelectByParam"></param>
+        /// <returns></returns>
+        public static bool ContainsUserSelectByParam(
+            this XUser source,
+            string userSelectByParam
+        )
+        {
+            //
+            var result =
+                !source.IsNull() &&
+                !userSelectByParam.IsNullOrEmpty() &&
+                (source.Id == userSelectByParam ||
+                source.Email.ToNormalString() == userSelectByParam.ToNormalString() ||
+                source.UserName.ToNormalString() == userSelectByParam.ToNormalString() ||
+                source.PhoneNumber.ToNormalString() == userSelectByParam.ToNormalString());
+
+            //
+            return result;
+        }
     }
 }
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