Implemented the support for reCAPTCHA v2 along with code optimization…

… and bug fixes. Implemented the support for reCAPTCHA v2 along with code optimization and bug fixes. The changes are 100% backward compatible.
tanveery · Nov 23, 2015 · ce72100 · ce72100
1 parent 13fe999
commit ce72100
Show file tree

Hide file tree

Showing 40 changed files with 1,004 additions and 316 deletions.
diff --git a/samples/RecaptchaMVCSample/App_Start/FilterConfig.cs b/samples/RecaptchaMVCSample/App_Start/FilterConfig.cs
@@ -1,4 +1,9 @@
-using System.Web;
+/* ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * =========================================================================================================================== */
+
+using System.Web;
 using System.Web.Mvc;
 
 namespace RecaptchaMVCSample

diff --git a/samples/RecaptchaMVCSample/App_Start/RouteConfig.cs b/samples/RecaptchaMVCSample/App_Start/RouteConfig.cs
@@ -1,4 +1,9 @@
-using System;
+/* ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * =========================================================================================================================== */
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;

diff --git a/samples/RecaptchaMVCSample/App_Start/WebApiConfig.cs b/samples/RecaptchaMVCSample/App_Start/WebApiConfig.cs
@@ -1,4 +1,8 @@
-using System;
+/* ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * =========================================================================================================================== */
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web.Http;

diff --git a/samples/RecaptchaMVCSample/Controllers/HomeController.cs b/samples/RecaptchaMVCSample/Controllers/HomeController.cs
@@ -23,7 +23,7 @@ public ActionResult Index()
         }
 
         [HttpPost]
-        public async Task<ActionResult> Index(UserRegistrationModel model)
+        public ActionResult Index(UserRegistrationModel model)
         {
             var recaptchaHelper = this.GetRecaptchaVerificationHelper();
 
@@ -33,7 +33,7 @@ public async Task<ActionResult> Index(UserRegistrationModel model)
                 return View(model);
             }
 
-            var recaptchaResult = await recaptchaHelper.VerifyRecaptchaResponseTaskAsync();
+            var recaptchaResult = recaptchaHelper.VerifyRecaptchaResponse();
 
             if (recaptchaResult != RecaptchaVerificationResult.Success)
             {

diff --git a/samples/RecaptchaMVCSample/Global.asax.cs b/samples/RecaptchaMVCSample/Global.asax.cs
@@ -1,4 +1,9 @@
-using System;
+/* ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * =========================================================================================================================== */
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
@@ -8,8 +13,6 @@
 
 namespace RecaptchaMVCSample
 {
-    // Note: For instructions on enabling IIS6 or IIS7 classic mode, 
-    // visit http://go.microsoft.com/?LinkId=9394801
     public class MvcApplication : System.Web.HttpApplication
     {
         protected void Application_Start()

diff --git a/samples/RecaptchaMVCSample/Models/UserRegistrationModel.cs b/samples/RecaptchaMVCSample/Models/UserRegistrationModel.cs
@@ -1,4 +1,9 @@
-using System;
+/* ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * =========================================================================================================================== */
+
+using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;

diff --git a/samples/RecaptchaMVCSample/Properties/AssemblyInfo.cs b/samples/RecaptchaMVCSample/Properties/AssemblyInfo.cs
@@ -1,4 +1,9 @@
-using System.Reflection;
+/* ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * =========================================================================================================================== */
+
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
@@ -31,5 +36,5 @@
 //
 // You can specify all the values or you can default the Revision and Build Numbers 
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("1.8.0.0")]
-[assembly: AssemblyFileVersion("1.8.0.0")]
+[assembly: AssemblyVersion("2.0.0.0")]
+[assembly: AssemblyFileVersion("2.0.0.0")]
diff --git a/samples/RecaptchaMVCSample/RecaptchaMVCSample.csproj b/samples/RecaptchaMVCSample/RecaptchaMVCSample.csproj
@@ -44,16 +44,12 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Newtonsoft.Json.6.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
-    <Reference Include="System.Net.Http.Formatting, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+    <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebApi.Client.5.2.0\lib\net45\System.Net.Http.Formatting.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebApi.Client.5.2.3\lib\net45\System.Net.Http.Formatting.dll</HintPath>
     </Reference>
     <Reference Include="System.Web.DynamicData" />
     <Reference Include="System.Web.Entity" />
@@ -63,35 +59,35 @@
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.0\lib\net45\System.Web.Helpers.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.3\lib\net45\System.Web.Helpers.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Http, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+    <Reference Include="System.Web.Http, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebApi.Core.5.2.0\lib\net45\System.Web.Http.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebApi.Core.5.2.3\lib\net45\System.Web.Http.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Http.WebHost, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+    <Reference Include="System.Web.Http.WebHost, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebApi.WebHost.5.2.0\lib\net45\System.Web.Http.WebHost.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebApi.WebHost.5.2.3\lib\net45\System.Web.Http.WebHost.dll</HintPath>
     </Reference>
-    <Reference Include="System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+    <Reference Include="System.Web.Mvc, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.Mvc.5.2.0\lib\net45\System.Web.Mvc.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.Mvc.5.2.3\lib\net45\System.Web.Mvc.dll</HintPath>
     </Reference>
     <Reference Include="System.Web.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.Razor.3.2.0\lib\net45\System.Web.Razor.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.Razor.3.2.3\lib\net45\System.Web.Razor.dll</HintPath>
     </Reference>
     <Reference Include="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.0\lib\net45\System.Web.WebPages.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.3\lib\net45\System.Web.WebPages.dll</HintPath>
     </Reference>
     <Reference Include="System.Web.WebPages.Deployment, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.0\lib\net45\System.Web.WebPages.Deployment.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.3\lib\net45\System.Web.WebPages.Deployment.dll</HintPath>
     </Reference>
     <Reference Include="System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.0\lib\net45\System.Web.WebPages.Razor.dll</HintPath>
+      <HintPath>..\packages\Microsoft.AspNet.WebPages.3.2.3\lib\net45\System.Web.WebPages.Razor.dll</HintPath>
     </Reference>
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Web" />

diff --git a/samples/RecaptchaMVCSample/Views/Home/Index.cshtml b/samples/RecaptchaMVCSample/Views/Home/Index.cshtml
@@ -1,4 +1,11 @@
-@{
+@*
+* ============================================================================================================================
+* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+* LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+* ===========================================================================================================================
+*@
+
+@{
     Layout = "~/Views/Shared/_Layout.cshtml";
 }
 

diff --git a/samples/RecaptchaMVCSample/Views/Home/Welcome.cshtml b/samples/RecaptchaMVCSample/Views/Home/Welcome.cshtml
@@ -1,4 +1,11 @@
-@{
+@*
+    * ============================================================================================================================
+    * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+    * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+    * ===========================================================================================================================
+*@
+
+@{
     Layout = "~/Views/Shared/_Layout.cshtml";
 }
 

diff --git a/samples/RecaptchaMVCSample/Views/Shared/_Layout.cshtml b/samples/RecaptchaMVCSample/Views/Shared/_Layout.cshtml
@@ -1,4 +1,11 @@
-@{
+@*
+    * ============================================================================================================================
+    * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+    * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+    * ===========================================================================================================================
+*@
+
+@{
     Layout = null;
 }
 

diff --git a/samples/RecaptchaMVCSample/Web.config b/samples/RecaptchaMVCSample/Web.config
@@ -1,19 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
-  For more information on how to configure your ASP.NET application, please visit
-  http://go.microsoft.com/fwlink/?LinkId=169433
-  -->
+ * ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * ===========================================================================================================================
+-->
 <configuration>
   <appSettings>
     <add key="webpages:Version" value="2.0.0.0" />
     <add key="webpages:Enabled" value="false" />
     <add key="PreserveLoginUrl" value="true" />
     <add key="ClientValidationEnabled" value="true" />
     <add key="UnobtrusiveJavaScriptEnabled" value="true" />
-    <!-- Your site key for reCAPTCHA-->
+    <!-- Your public key (site key) for your reCAPTCHA control -->
     <add key="recaptchaPublicKey" value="" />
-    <!-- Your secret key for reCAPTCHA -->
+    <!-- Your private key (secret key) for your reCAPTCHA control -->
     <add key="recaptchaPrivateKey" value="" />
+    <!-- reCAPTCHA version. Possible values are: 1 and 2. Default is 1. -->
+    <add key="recaptchaApiVersion" value="2" />
   </appSettings>
   <system.web>
     <httpRuntime targetFramework="4.5" />
@@ -50,32 +54,32 @@
         <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
-        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
-        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
+        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
-        <bindingRedirect oldVersion="1.0.0.0-5.2.0.0" newVersion="5.2.0.0" />
+        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
+        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-5.2.0.0" newVersion="5.2.0.0" />
+        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
       </dependentAssembly>
       <dependentAssembly>
-        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-5.2.0.0" newVersion="5.2.0.0" />
+        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>

diff --git a/samples/RecaptchaMVCSample/packages.config b/samples/RecaptchaMVCSample/packages.config
@@ -1,13 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+ * ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * ===========================================================================================================================
+-->
 <packages>
-  <package id="Microsoft.AspNet.Mvc" version="5.2.0" targetFramework="net45" />
-  <package id="Microsoft.AspNet.Razor" version="3.2.0" targetFramework="net45" />
-  <package id="Microsoft.AspNet.WebApi" version="5.2.0" targetFramework="net45" />
-  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.0" targetFramework="net45" />
-  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.0" targetFramework="net45" />
-  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.0" targetFramework="net45" />
-  <package id="Microsoft.AspNet.WebPages" version="3.2.0" targetFramework="net45" />
+  <package id="Microsoft.AspNet.Mvc" version="5.2.3" targetFramework="net45" />
+  <package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net45" />
+  <package id="Microsoft.AspNet.WebApi" version="5.2.3" targetFramework="net45" />
+  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net45" />
+  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net45" />
+  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net45" />
+  <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net45" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="4.5.11" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="6.0.3" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
 </packages>
diff --git a/samples/RecaptchaWebFormSample/Default.aspx b/samples/RecaptchaWebFormSample/Default.aspx
@@ -1,4 +1,10 @@
-<%@ Page Language="C#" Async="true" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="RecaptchaWebFormSample.Default" %>
+<!--
+ * ============================================================================================================================
+ * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
+ * LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * ===========================================================================================================================
+-->
+<%@ Page Language="C#" Async="true" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="RecaptchaWebFormSample.Default" %>
 
 <%@ Register Assembly="Recaptcha.Web" Namespace="Recaptcha.Web.UI.Controls" TagPrefix="cc1" %>
 

diff --git a/samples/RecaptchaWebFormSample/Default.aspx.cs b/samples/RecaptchaWebFormSample/Default.aspx.cs
@@ -20,15 +20,15 @@ protected void Page_Load(object sender, EventArgs e)
 
         }
 
-        protected async void btnSubmit_Click(object sender, EventArgs e)
+        protected void btnSubmit_Click(object sender, EventArgs e)
         {
             if (String.IsNullOrEmpty(Recaptcha1.Response))
             {
                 lblMessage.Text = "Captcha cannot be empty.";
             }
             else
             {
-                RecaptchaVerificationResult result = await Recaptcha1.VerifyTaskAsync();
+                RecaptchaVerificationResult result = Recaptcha1.Verify();
 
                 if (result == RecaptchaVerificationResult.Success)
                 {