C＃WPF-尝试在应用启动时创建文件时出错

Question

I am new to Visual Studios, I am trying to make an app that create an .ahk file. My problem is that when the app starts up I need it to create several files/folders. to do this I added this code

public MainWindow()
{
    InitializeComponent();
    int i = 1;
    while (i < 6)
    {
        string comp_name = System.Environment.UserName;
        System.IO.File.Create(@"C:\Users\" + comp_name + @"\Documents\KeyBind\" + i + @"\Modifier.txt");
        System.IO.File.Create(@"C:\Users\" + comp_name + @"\Documents\KeyBind\" + i + @"\Key.txt");
        System.IO.File.Create(@"C:\Users\" + comp_name + @"\Documents\KeyBind\" + i + @"\Me_Do.txt");
        System.IO.File.Create(@"C:\Users\" + comp_name + @"\Documents\KeyBind\" + i + @"\Text.txt");
        System.IO.File.Create(@"C:\Users\" + comp_name + @"\Documents\KeyBind\" + i + @"\Bind" + i + @".txt");
        System.IO.File.Create(@"C:\Users\" + comp_name + @"\Documents\KeyBind\Bind.ahk");
        i++;
    }
}

this results in the following error

> An unhandled exception of type
> 'System.Windows.Markup.XamlParseException' occurred in
> PresentationFramework.dll
> 
> Additional information: 'The invocation of the constructor on type
> 'WpfApplication2.MainWindow' that matches the specified binding
> constraints threw an exception.' Line number '3' and line position
> '9'.

Not sure what the issue is here. if you want to look at the full code i have here is the link Full Code I know there is alot of redundant code I plan to fix it, once i figure this out. Any Help is appreciated.

Answer 1

Try not using hard-coded Documents paths, and don't try to create directories that already exist. You also may not want to create the files unless they're missing.

private void EnsureFiles()
{
    var numberedFiles = new[] { "Modifier.txt", "Key.txt", "Me_Do.txt", "Text.txt" };

    var basePath = Path.Combine(
        Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments),
        "KeyBind");

    if (!Directory.Exists(basePath))
        Directory.CreateDirectory(basePath);

    var bindAhkPath = Path.Combine(basePath, "Bind.ahk");

    if (!File.Exists(bindAhkPath))
        File.CreateText(bindAhkPath).Dispose();

    for (var i = 1; i < 6; i++)
    {
        foreach (var file in numberedFiles)
        {
            var numberedPath = Path.Combine(basePath, i.ToString());

            if (!Directory.Exists(numberedPath))
                Directory.CreateDirectory(numberedPath);

            var filePath = Path.Combine(numberedPath, file);

            if (!File.Exists(filePath))
                File.CreateText(filePath).Dispose();
        }
    }
}

As others have suggested, you may want to move this method out of your main window and into your App class, then override OnStartup to call it.