Set Up Activity Logging

Logging is used for debugging, as well as for collecting and analyzing working information about the application. Log files contain system information about the operation of the client application.

Enable Activity Logging using appsettings.json File

NOTE: This option is preferred for .NET Core applications.

The following are the steps to enable logging in EWSClient.

Add an appsettings.json configuration file to a C# project, if it has not been added before. Make sure that the project file contains the following lines in the ItemGroup section:
```
<Content Include="appsettings.json">
    <CopyToOutputDirectory>Always</CopyToOutputDirectory>
</Content>
```

Then, add the following content to the appsettings.json file.

{
  "EWSDiagnosticLog": "ews.log",
  "EWSDiagnosticLog_UseDate": true
}

There are two properties:

EWSDiagnosticLog - Specifies the relative or absolute path to the log file.
EWSDiagnosticLog_UseDate - specifies whether to add a string representation of the current date to the log file name.

Enable Activity Logging in Programm Code

You can also enable logging immediately in the code.

NOTE: even if you have already enabled logging by using configuration files, this option will be applied.

The following are the steps to enable logging in EWSClient.

Create an EWSClient.
Set the path to the log file using the LogFileName property.
Set the UseDateInLogFileName property if it is necessary.

using (var client = EWSClient.GetEWSClient("https://outlook.office365.com/EWS/Exchange.asmx", credentials))
{
  client.LogFileName = @"Aspose.Email.EWS.log";
  client.UseDateInLogFileName = false;
}

Enable Activity Logging using App.config File

This option is suitable for applications where app.config is the preferred way for keeping the app configuration.

The following are the steps to enable logging in EWSClient.

Add an application configuration file to a C# project, if it has not been added before.
Add the following content to the configuration file.

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
      <section name="Aspose.Email.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
    </sectionGroup>
  </configSections>
    <applicationSettings>
        <Aspose.Email.Properties.Settings>
            <setting name="EWSDiagnosticLog" serializeAs="String">
                <value>..\..\..\Log\Aspose.Email.EWS.log</value>
            </setting>
            <setting name="EWSDiagnosticLog_UseDate" serializeAs="String">
                <value>False</value>
            </setting>
        </Aspose.Email.Properties.Settings>
    </applicationSettings>
</configuration>

There are two setting sections:

EWSDiagnosticLog - Specifies the relative or absolute path to the log file.
EWSDiagnosticLog_UseDate - specifies whether to add a string representation of the current date to the log file name.

Managing Conversation Items Using Asynchronous Operations in EWSClient