Question

Beloew is my code which i want to save some info the user key in to be saved to the file, how come i keep encountering Ioexception error after i debug and click on the save button..pls kindly adv..thks!!! i guess it has something to do with the filefolder but have absolutely no idea..

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace ASSISNMENTTT
{
    public partial class Registeration : Form
    {
        public Registeration()
        {
            InitializeComponent();
        }

        private void Btn_Save_Click(object sender, EventArgs e)
        {
            // This is the button labeled "Save" in the program.
            //
            File.WriteAllText("C:\demo.txt", Tb_Admin.Text);
            File.WriteAllText("C:\demo.txt", Tb_Name.Text);
            File.WriteAllText("C:\demo.txt", Tb_Gender.Text);
        }
    }
}

Answer 1

很可能是Win7或Vista,无法接触:驾驶。

Answer 2

如果贵方能查阅C:驱动力, demo.txt可能只贴上“。



这部法典显示了一种未经许可的接受,其错误文本与你对您的问题和其他答复的评论相同。

static void Main(string[] args)
{
    var demoTxt = new FileInfo("C:\demo.txt");
    demoTxt.Attributes |= FileAttributes.ReadOnly;

    WriteAllText("should succeed");


    try
    {
        demoTxt.Attributes |= FileAttributes.ReadOnly;
        WriteAllText("should fail");
    }
    catch (UnauthorizedAccessException uae)
    {
        Debug.WriteLine(uae.ToString());
    }
}

static void WriteAllText(string text)
{
    // This is the button labeled "Save" in the program.
    //
    File.WriteAllText("C:\demo.txt", text);
}


今后,这可能有助于你为SO员额提供更多信息。

    private void Btn_Save_Click(object sender, EventArgs e)
    {
        try
        {
            // This is the button labeled "Save" in the program.
            //
            File.WriteAllText("C:\demo.txt", Tb_Admin.Text);
            File.WriteAllText("C:\demo.txt", Tb_Name.Text);
            File.WriteAllText("C:\demo.txt", Tb_Gender.Text);
        }
        catch(IoException ex)
        {
            //View the Output Window, copy the text to your question
            System.Diagnostics.Debug.WriteLine(ex.ToString());
        }
    }

友情链接