Chapter 19: First Try It Out

phztfte1 · January 29th, 2016, 01:11 AM

Hi Imar,

My happiness was short lived. Since my website work, I decided to use it for Chapter 19. I ran into a problem doing so with the Try It Out: Moving Application Settings to Web.config.

At step 12, I used Internet Explorer to open the homepage and received an error message:

An exception of type 'System.Exception' occurred in App_Code.nye4pf4x.dll but was not handled in user code

Additional information: AppSetting To Address not found in the web.config file.

If there is a handler for this exception, the program may be safely continued.

Here is my ContactForm.ascx.cs code.

Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;              // Provides access to the File class for reading the file
using System.Net.Mail;     // Provides access to the various mail related classes

public partial class Controls_ContactForm : System.Web.UI.UserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
    {
      if (!string.IsNullOrEmpty(PhoneHome.Text) || !string.IsNullOrEmpty(PhoneBusiness.Text))
      {
        args.IsValid = true;
      }
      else
      {
        args.IsValid = false;
      }
    }
    protected void SendButton_Click(object sender, EventArgs e)
    {
      if (Page.IsValid)
      {
        string fileName = Server.MapPath("~/App_Data/ContactForm.txt");
        string mailBody = File.ReadAllText(fileName);

        mailBody = mailBody.Replace("##Name##", Name.Text);
        mailBody = mailBody.Replace("##Email##", EmailAddress.Text);
        mailBody = mailBody.Replace("##HomePhone##", PhoneHome.Text);
        mailBody = mailBody.Replace("##BusinessPhone##", PhoneBusiness.Text);
        mailBody = mailBody.Replace("##Comments##", Comments.Text);

        try
        {
          MailMessage myMessage = new MailMessage();
          myMessage.Subject = "Response from web sites";
          myMessage.Body = mailBody;

          myMessage.From = new MailAddress(AppConfiguration.FromAddress, AppConfiguration.FromName);
          myMessage.To.Add(new MailAddress(AppConfiguration.ToAddress, AppConfiguration.ToName));
          myMessage.ReplyToList.Add(new MailAddress(EmailAddress.Text));

          SmtpClient mySmtpClient = new SmtpClient();
          mySmtpClient.Send(myMessage);

          MessageSentPara.Visible = true;
          FormTable.Visible = false;
       }
        catch (SmtpException)
        {
          Message.Text = "An error occurred while sending your e-mail.  Please try again.";
        }
        finally
        {
          Message.Visible = true;
        }
      }
    }
}

Here is my web.config code.

Code:

<?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
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="PlanetWroxConnectionString1" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\PlanetWrox.mdf;Integrated Security=True" providerName="System.Data.SqlClient" />
    <add name="PlanetWroxEntities" connectionString="metadata=res://*/App_Code.PlanetWrox.csdl|res://*/App_Code.PlanetWrox.ssdl|res://*/App_Code.PlanetWrox.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=(LocalDB)\v11.0;attachdbfilename=|DataDirectory|\PlanetWrox.mdf;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
  </connectionStrings>
  <appSettings>
    <add key="ValidationSettings:UnobtrusiveValidationMode" value="WebForms" />
    <add key="FromAddress" value="[email protected]" />
    <add key="FromName" value="Planet Wrox" />
    <add key="ToAdress" value="[email protected]" />
    <add key="ToName" value="Planet Wrox" />
    <add key="SendMailOnError" value="true" />
  </appSettings>
  <system.web>
    <trace mostRecent="true" enabled="false" requestLimit="100" pageOutput="false" localOnly="true" />
    <customErrors mode="On" defaultRedirect="~/Errors/OtherErrors.aspx" redirectMode="ResponseRewrite">
      <error statusCode="404" redirect="~/Errors/Error404.aspx" />
    </customErrors>
    <authentication mode="Forms">
      <forms loginUrl="~/Login" />
    </authentication>
    <pages theme="Monochrome">
      <controls>
        <add tagPrefix="Wrox" tagName="Banner" src="~/Controls/Banner.ascx" />
      <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt" /></controls>
    </pages>
    <compilation debug="true" targetFramework="4.5.1">
      <assemblies>
        <add assembly="System.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
        <add assembly="Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
      </assemblies>
      <buildProviders>
        <add extension=".edmx" type="System.Data.Entity.Design.AspNet.EntityDesignerBuildProvider" />
      </buildProviders>
    </compilation>
    <httpRuntime targetFramework="4.5.1" />
    <profile defaultProvider="DefaultProfileProvider">
      <providers>
        <add name="DefaultProfileProvider" type="System.Web.Providers.DefaultProfileProvider, System.Web.Providers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="PlanetWroxConnectionString1" applicationName="/" />
      </providers>
    </profile>
    <membership defaultProvider="DefaultMembershipProvider">
      <providers>
        <add name="DefaultMembershipProvider" type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="PlanetWroxConnectionString1" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="7" minRequiredNonalphanumericCharacters="1" passwordAttemptWindow="10" applicationName="/" />
      </providers>
    </membership>
    <roleManager enabled="true" defaultProvider="DefaultRoleProvider">
      <providers>
        <add connectionStringName="PlanetWroxConnectionString1" applicationName="/" name="DefaultRoleProvider" type="System.Web.Providers.DefaultRoleProvider, System.Web.Providers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
      </providers>
    </roleManager>
    <!--
            If you are deploying to a cloud environment that has multiple web server instances,
            you should change session state mode from "InProc" to "Custom". In addition,
            change the connection string named "DefaultConnection" to connect to an instance
            of SQL Server (including SQL Azure and SQL  Compact) instead of to SQL Server Express.
      -->
    <sessionState mode="InProc" customProvider="DefaultSessionProvider">
      <providers>
        <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="PlanetWroxConnectionString1" />
      </providers>
    </sessionState>
  </system.web>
  <system.net>
    <mailSettings>
      <smtp deliveryMethod="Network" from="Dexter Tom &lt;[email protected]&gt;">
        <network enableSsl="true" host="smtp.gmail.com" password="(Se1026An)" userName="[email protected]" port="587" />
      </smtp>
    </mailSettings>
  </system.net>
  <system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="NameServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
    <services>
      <service name="NameService">
        <endpoint address="" behaviorConfiguration="NameServiceAspNetAjaxBehavior" binding="webHttpBinding" contract="NameService" />
      </service>
    </services>
  </system.serviceModel>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
  <location path="Management">
    <system.web>
      <authorization>
        <allow roles="Managers" />
        <deny users="*" />
      </authorization>
    </system.web>
  </location>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

I also ran it using Goggle Chrome. I did not receive any error message, but the Contact Us form scrolls up and does not provide any thank you message. Also, no email is sent.

Please help resolve.

Imar · January 29th, 2016, 11:27 AM

>> Additional information: AppSetting To Address not found in the web.config file.

Is the space between To And Address present in your code? Or is that a formatting issue in this forum?

Either way, you may want to count the number of d's in ToAddress in your web.config.

Cheers,

Imar

phztfte1 · January 29th, 2016, 10:42 PM

Thank you, Imar; the program works perfectly.

I don't know how you do it, but you're great at it. I printed out the web.config file from Chapter 19 and matched it against my web.config file and didn't find the error. I also retraced my steps in the Try It Out.

The space between the To and Address is my typo.

Again, thank you very much. I appreciate the time you took to find the error.

Imar · January 31st, 2016, 03:46 PM

You're welcome; glad to hear it's working now.

Cheers,

Imar