How to pass four string parameters to c# Console Application that returns a string. This Console App is called from another c# class.

Question

Hi I have c# class that call (refer) a c# console application with four string parameters. Console application takes that parameters and returns a string to the calling class. Console application itself has many other classes for various tasks to perform.

Is there any way I can declared those four strings inside the console app and then let the calling class assign correct values to those strings?

I created console app using .NET Framework version 4.7 using VS 2019.

Console app starts the application that do various task once I get all four strings from the calling class. Any other suggestion I can do the above without console application? If so how? Your assistance is greatly appreciated.

Thank you

Answer 1

Your post is not very clear and the code is missing. You can use commandline arguments to pass parameter to a console app, see Main() and command-line arguments

Answer 2

Hi @Josh S , Welcome to Microsoft Q&A,

In addition to the command line, you can also use the configuration file method.

Add a configuration file in the console application: You can add a configuration file (for example, app.config or .config file) in the console application and store these four string parameters in the configuration file.

<configuration>
     <appSettings>
         <add key="Param1" value="DefaultValue1" />
         <add key="Param2" value="DefaultValue2" />
         <add key="Param3" value="DefaultValue3" />
         <add key="Param4" value="DefaultValue4" />
     </appSettings>
</configuration>

Reading configuration file in console application: In console application, you can use ConfigurationManager class to read the values from the configuration file.

using System.Configuration;

class Program
{
     static void Main()
     {
         string param1 = ConfigurationManager.AppSettings["Param1"];
         string param2 = ConfigurationManager.AppSettings["Param2"];
         string param3 = ConfigurationManager.AppSettings["Param3"];
         string param4 = ConfigurationManager.AppSettings["Param4"];

         //Execute the task using param1, param2, param3 and param4
     }
}

Modify the configuration file from the calling class: In the calling class, you can assign values to these four parameters by modifying the configuration file. Note that this may require write permissions to the configuration file.

Best Regards,

Jiale

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