C＃Windows应用程序将文本写入文件

Question

Having real problems with writing to a text file using following code

using HCP1.Common;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.UI.Xaml.Media.Imaging;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.Storage;
using System.Threading.Tasks;
using System.Text;
using System.Diagnostics;

private void imageview_DoubleTapped(object sender, DoubleTappedRoutedEventArgs e)
    {
        var point = e.GetPosition(imageview);
        var  p1 = (int)point.X;
        var p2 = (int)point.Y;
        string stringVal1;
        string stringVal2;   
        stringVal1 = System.Convert.ToString(p1);
        stringVal2 = System.Convert.ToString(p2);
        Text3.Text = stringVal1;
        Text4.Text = stringVal2;

        if (p2 > 210 && p2 < 235 && p1 > 339 && p1 < 367) { 

            string dave = Environment.NewLine + Text3.Text + "," + Text4.Text;
            string path = @"C:\myfile.txt";
            StreamWriter sw = new StreamWriter(path);
            string bufferOne = dave;
            sw.Write(bufferOne);
            sw.Close();
            sw.Dispose();
            };
                }

When a double tap is done it should save the contents of a textblock to a file but I have three errors

The best overloaded method match for 'System.IO.StreamWriter.StreamWriter(System.IO.Stream)' has some invalid arguments (This is at the Streamwriter Line)

cannot convert from 'string' to 'System.IO.Stream' (At the same line)

'System.IO.StreamWriter' does not contain a definition for 'Close' and no extension method 'Close' accepting a first argument of type 'System.IO.StreamWriter' could be found (are you missing a using directive or an assembly reference?) (This is at the Close line)

As you can see I have SYstem.io reference

Any ideas where im going wrong?

Any help appreciated

Mark

Answer 1

Use File.WriteAllText . It's a static method and does the same as opening, writing and closing a file. Remember, the less code the less bugs.

  if (p2 > 210 && p2 < 235 && p1 > 339 && p1 < 367) 
  { 
        string dave = Environment.NewLine + Text3.Text + "," + Text4.Text;
        File.WriteAllText(@"C:\myfile.txt", dave);
  }