C#, export log message logs to a txt file, instance of method, dependencyproperty.register error, etc

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C#

file

export

dependency

logging

I'm having some issues here. So I wrote this method in a class named MainWindow, that exports logs of an app to a txt. Honestly I dont know if its good but anyways we will see.

public void exportLogs ()
{

    string logsFolder = "CertificationTools_App\\bin\\Debug\\net48LogsFolder"; // Folder for logs
    if (!Directory.Exists(logsFolder))
    {
        Directory.CreateDirectory(logsFolder);
    }


    string timestamp = DateTime.Now.ToString("hhmmss");
    string logFileName = Path.Combine(logsFolder, $"Logs_{timestamp}.txt");
    string errorLogFileName = Path.Combine(logsFolder, $"ErrorLog_{timestamp}.txt");



    using (StreamWriter logWriter = new StreamWriter(logFileName))
    using (StreamWriter errorLogWriter = new StreamWriter(errorLogFileName))
    {

        foreach (var item in LogGrid.Children)
        {
            logFileName = $"{item}";
            logWriter.WriteLine(logFileName);

            if (IsErrorLog(logFileName))
            {
                errorLogWriter.WriteLine(errorLogFileName);
            }
        }

    }

}

private bool IsErrorLog(string logText)
{
    
    return logText.Contains(LogType.Error.ToString()) || logText.Contains(LogType.Warning.ToString());
}

In a class called SDKService here is an example of where I would like to Log message in the app but also export it:

public void DeleteCredentials(int nbOfCredentialsToDelete, bool deleteAll, bool deleteMatchingCardholders)
{
    if (ListCredentials.Count == 0)
    {
        Log("No credentials to delete", LogType.Warning);
        return;
    }
    if (ListCredentials.Count < nbOfCredentialsToDelete)
    {
        Log($"Only {ListCredentials.Count} credential(s) in the system - Impossible to delete {nbOfCredentialsToDelete}", LogType.Warning);
        return;
    }

... etc

I cant make it static cause LogGrid and IsErrorLog gets as error "an object reference is required for the non static field, method or property "MainWindow.LogGrid""

I made an instance of MainWindow in the SDKService class (at the beginning) and called the instance after the Log message line.

MainWindow export = new MainWindow();

...

 public void DeleteCredentials(int nbOfCredentialsToDelete, bool deleteAll, bool deleteMatchingCardholders)
{
    if (ListCredentials.Count == 0)
    {
        export.exportLogs();
        Log("No credentials to delete", LogType.Warning);
        
        return;
    }
    if (ListCredentials.Count < nbOfCredentialsToDelete)
    {
        export.exportLogs();
        Log($"Only {ListCredentials.Count} credential(s) in the system - Impossible to delete {nbOfCredentialsToDelete}" , LogType.Warning);
        
        return;
    }
    {
        export.exportLogs();
        Log("Starting delete", LogType.Info);
        
    }

...

However when I run it, i get this error in the MainWindow class:

Method: public readonly DependencyProperty IsUserConnectedProperty = DependencyProperty.Register("IsUserConnected", typeof(bool), typeof(MainWindow), new PropertyMetadata(default(bool)));

Error Message: System.ArgumentException: ''IsUserConnected' property was already registered by 'MainWindow'.'

I am sorry if I didn't explain well or if I did something wrong. Any help would be appreciated.

What I have tried:

I read forums and I still have no clue where to go.

In summary I just want my method to export all the logs to a text file, which it makes a new txt everytime you run it again. Also if it has a warning or error, it instead goes towards a txt file ErrorLogs.