API fail to use PUT method

i able to call Get Method.
but fail to call PUT, DELETE Method.

i added in webconfig.

<system.webServer><handlers><remove name="BlockViewHandler"/><add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" /><remove name="ExtensionlessUrlHandler-Integrated-4.0"/><remove name="OPTIONSVerbHandler"/><remove name="TRACEVerbHandler"/><add name="ExtensionlessUrlHandler-Integrated-4.0" path="*."
          verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS"
          type="System.Web.Handlers.TransferRequestHandler"
       preCondition="integratedMode,runtimeVersionv4.0"/></handlers></system.webServer>

below is my controller code :

[HttpPut]
[Route("api/PutEmployeeGenderEmpCode/{_EmpCode}")]

public void PutEmployeeGenderEmpCode(string _EmpCode)
{
    string TempValue = "1";
    SqlConnection Conn = new SqlConnection(ConnectionString);
    CheckConnectionStatus(Conn);
    Conn.Open();

    string SQLCommand = "UPDATE [dbo].[M_EMP_MASTER] ";
    SQLCommand = SQLCommand + "SET ";
    SQLCommand = SQLCommand + "[EMP_GENDER] = '" + TempValue + "' ";
    SQLCommand = SQLCommand + "WHERE [EMP_CODE] = '" + _EmpCode + "'";

    var cmd2 = new SqlCommand(SQLCommand, Conn);
    cmd2.ExecuteNonQuery();

    Conn.Close();
    Conn.Dispose();
}

when call : this is the error show :

http://localhost:44322/api/PutEmployeeGenderEmpCode/502

General
----------
request URL: https://localhost:44322/api/PutEmployeeGenderEmpCode/502
Request Method: GET
Status Code: 405 
Remote Address: [::1]:44322
Referrer Policy: no-referrer-when-downgrade

Response Header
----------------
allow: PUT
cache-control: no-cache
content-length: 92
content-type: application/xml; charset=utf-8
date: Mon, 18 May 2020 08:39:04 GMT
expires: -1
pragma: no-cache
server: Microsoft-IIS/10.0
status: 405
x-aspnet-version: 4.0.30319
x-powered-by: ASP.NET
x-sourcefiles: =?UTF-8?B?QzpcMjAyMFxDQlMyMDAwNCAtIE1PQklMRSAtIFRFU1RcV2ViQVBJXzNcV2ViQVBJM1xXZWJBUEkzXGFwaVxQdXRFbXBsb3llZUdlbmRlckVtcENvZGVcNTAy?=

Request Header
---------------
:authority: localhost:44322
:method: GET
:path: /api/PutEmployeeGenderEmpCode/502
:scheme: https
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7
cookie: ai_user=nrUCU|2020-04-23T13:17:35.464Z
sec-fetch-dest: document
sec-fetch-mode: navigate
sec-fetch-site: none
sec-fetch-user: ?1
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36

<error>
<message>
The requested resource does not support http method 'GET'.



Thanks in advance..