使用表单和文件.AppendAllText更新多个日志

本文关键字：更新 日志 AppendAllText 文件 表单 | 更新日期: 2023-09-27 17:53:39

我对编程很陌生，所以如果这太简单了，我很抱歉。

我正在尝试我的第一个程序，c#中的GUI表单，将使用文本框将文本发送到"密钥"文件，这将反过来启动机器人复制同步。在代码中，我试图测试这与。txt文件。

从Program.cs 

{
    string fileName = @"c:''Test.txt";
    string textToAdd = textBox1.ToString();
    var culture = new CultureInfo("en-US");
    string newTime = new DateTime.Now.ToString(culture);
    //File.AppendAllText(fileName, newTime,  System.Environment.UserName, textToAdd);
    //using (StreamWriter w = new StreamWriter(fileName))
    {
        File.AppendAllText(fileName, String.Format("{0} {1} {2}", newTime, System.Environment.UserName, textToAdd));
    }
}

这是来自form .cs，我不确定我需要在这里添加什么才能使按钮工作。目前这些按钮什么也不做，尽管被设置为取消和确定。

 public void textBox1_TextChanged(object sender, EventArgs e)
 {
     string var;
     var = textBox1.Text;
 }
 private void button_OK_Click(object sender, EventArgs e)
 {
     Form1 myForm = new Form1();
     if(myForm.DialogResult == DialogResult.OK)
     {

         MessageBox.Show("You have successfully added this entry to the key files.");
          // object MessageBoxButtons = new MessageBoxButtons;
           // MessageBoxButtons.OK = this.Close();               
     }
}
private void button_Cancel_Click(object sender, EventArgs e)
{    
    Form1 myForm = new Form1();
    if(myForm.DialogResult == DialogResult.Cancel)
    {
         //   this.Close();
            Application.Exit();
    }
}

使用表单和文件.AppendAllText更新多个日志

我想你忘记添加事件处理程序到你的方法。您可以从按钮属性窗口中的编辑器或代码中执行此操作，例如:

public Form1() 
{ 
      InitializeComponent(); 
      this.button_OK.Click+=new EventHandler(button_OK_Click); 
      this.button_Cancel.Click+=new EventHandler(button_Cancel_Click);
}

无论如何，你的代码有很多错误。在您的button_OK_Click中，您从相同的形式创建Form1的新实例是无稽之谈。你不应该使用Program.cs

中的任何代码

编辑

让我们分析一下代码中的错误:

Form1 

public void textBox1_TextChanged(object sender, EventArgs e)
{
    //This does nothing. You are creating a variable whose scope is just
    // this method, so you wouldn't be able to access it from outside
    string var;
    var = textBox1.Text;
 }
 private void button_OK_Click(object sender, EventArgs e)
 {
     Form1 myForm = new Form1(); //You are creating a new Form1..Why?
     //there won't be a dialogResult,as you are not showing the form with ShowDialog
     if(myForm.DialogResult == DialogResult.OK) 
     {
         MessageBox.Show("You have successfully added this entry to the key files.");
         // object MessageBoxButtons = new MessageBoxButtons;
         // MessageBoxButtons.OK = this.Close();               
     }
}
private void button_Cancel_Click(object sender, EventArgs e)
{    
     Form1 myForm = new Form1();
     if(myForm.DialogResult == DialogResult.Cancel)
     {
     //   this.Close();
        Application.Exit();
     }
}

现在多少应该是这样了:

首先删除您添加到Program.cs的所有代码。然后你的Form1看起来应该是这样的:

Form1 

public Form1()
    {
        InitializeComponent();
        this.button_OK.Click += new EventHandler(button_OK_Click);
        this.button_Cancel.Click += new EventHandler(button_Cancel_Click);
    }
    private void button_OK_Click(object sender, EventArgs e)
    {
        if (MessageBox.Show("Are you sure?", "Add text", MessageBoxButtons.YesNo) == DialogResult.Yes)
        {
            string fileName = @"c:''Test.txt";
            string textToAdd = textBox1.ToString();
            string newTime = DateTime.Now.ToString("dd/MM/yy HH:mm:ss");
            try
            {
                File.AppendAllText(fileName, String.Format("{0} {1} {2}", newTime, System.Environment.UserName, textToAdd));
                MessageBox.Show("You have successfully added this entry to the key files.");
            }
            catch (Exception ex)
            {
                MessageBox.Show("There was an error adding this entry to the key files.");
            }
        }
    }
    private void button_Cancel_Click(object sender, EventArgs e)
    {
        Form1 myForm = new Form1();
        if (MessageBox.Show("Are you sure?", "Exit", MessageBoxButtons.YesNo) == DialogResult.Yes)
        {
            Application.Exit();
        }
    }
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