c# wpf File.WriteAllText issue

Question

hello. first i using translate, if have mispellings on the sentences, sugges me...
i work a project with vs2022 and i save a file on a folder.
i write this code for overwrite a file:
using (StreamWriter sw = new StreamWriter(System.AppDomain.CurrentDomain.BaseDirectory + "projectTemplateSource/projekonumveadi.txt"))
{
sw.Write(projectfolder + @"\" + projectname + ".idea");
}

but this not worked on me. Not Save it.

i tried another code for overwrite a file:

File.WriteAllText(System.AppDomain.CurrentDomain.BaseDirectory + "projectTemplateSource/projekonumveadi.txt",  projectfolder + @"\" + projectname + ".idea");

but not worked again.

i already have a file. but can not overwrite it.

i tried to if exists, delete it and write again but not worked again.

can someone help me?

Answer 1

MainWindow.xaml:

  <StackPanel>  
        <TextBox x:Name="tb" Width="800" Height="100" Background="AliceBlue" />  
        <Button Click="Button_Click" Content="click"/>  
    </StackPanel>  

MainWindow.xaml.cs:

public partial class MainWindow : Window  
    {  
        string path = @"C:\Users\...\WpfApp2\a.txt";  
        public MainWindow()  
        {  
            InitializeComponent();  

        }  
        private void Button_Click(object sender, RoutedEventArgs e)  
        {  
            if (File.Exists(path))  
            {  
                string projectfolder = "c:\\users\\";  
                string projectname = "\\0331\\FileOverWriteDemo";  
                string createText = projectfolder + @"\" + projectname + ".idea";  
                File.WriteAllText(path, String.Empty);  
                TextWriter tw = new StreamWriter(path, true);  
                tw.WriteLine(createText);  
                tw.Close();  
                tb.Text = new StreamReader(path).ReadToEnd();  
            }  
        }  
    }  

The result:

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