在 IF ELSE 中使用我的字符串

Question

我在编码方面真的很菜鸟，这是我的第一个程序，也是我第一次接触编码软件。

首先让我告诉你我有什么：

private void SaveClose_Click(object sender, RoutedEventArgs e)
{
    using (var fs = new FileStream(@"Resources\arguments.txt", FileMode.Truncate))
    {
    }

    if (Windowed.IsChecked == true)
        windowed = true;
    else
        windowed = false;

    string text = File.ReadAllText(@"Resources\arguments.txt");

    string createTextWindowed = "-screen-fullscreen 0" + Environment.NewLine;
    File.WriteAllText(@"Resources\arguments.txt", createTextWindowed);

    string createTextFullscreen = "-screen-fullscreen 1" + Environment.NewLine;
    File.WriteAllText(@"Resources\arguments.txt", createTextFullscreen);


    if (windowed == true)
        createTextWindowed 
    else
        createTextFullscreen
}

第 21 行和第 23 行（createTextWindowed 和 createTextFullscreen）是错误，我想修复它们，但我是菜鸟，所以我不知道如何使用我制作的字符串，我想制作如果windowed = true（我想你明白了），程序写入txt文件“-screen-fullscreen 0”，如果它是false，我试过这个，但当然它不起作用:')

Answer 1

1. 您不需要这个，因为 File.WriteAllText 无论如何都会截断文件。

   using (var fs = new FileStream(@"Resources\arguments.txt", FileMode.Truncate))
   {
   }
   

2. 也将其删除，因为您似乎没有使用它

   string text = File.ReadAllText(@"Resources\arguments.txt");
   

3. 定义一个字符串变量，根据它是否窗口化来设置要写入的文本。

   string textWrite;
   
   if (windowed == true)
   {
       textWrite = "-screen-fullscreen 0" + Environment.NewLine;
   }
   else
   {
       textWrite = "-screen-fullscreen 1" + Environment.NewLine;
   }
   

4. 最后只需在文件中写入文本

   File.WriteAllText(@"Resources\arguments.txt", textWrite);
   

修改后的函数完整代码如下：

private void SaveClose_Click(object sender, RoutedEventArgs e)
{
    if (Windowed.IsChecked == true)
        windowed = true;
    else
        windowed = false;

    string textWrite;

    if (windowed == true)
    {
        textWrite = "-screen-fullscreen 0" + Environment.NewLine;
    }
    else
    {
        textWrite = "-screen-fullscreen 1" + Environment.NewLine;
    }

    File.WriteAllText(@"Resources\arguments.txt", textWrite);
}

Answer 2

你的代码的逻辑顺序需要改变，所以：

    string text = File.ReadAllText(@"Resources\arguments.txt");

    if (Windowed.IsChecked)
    {
      text = text + "-screen-fullscreen 0" + Environment.NewLine;
    }
    else
    {
      text = text + "-screen-fullscreen 1" + Environment.NewLine;
    }

    File.WriteAllText(@"Resources\arguments.txt", text);

using 指令不是必需的，因此您可以删除它。

此外，如果windowed bool 没有在此范围之外使用，则没有必要，您可以直接在 if 语句中使用 Windowed.IsChecked。这使代码更加整洁。

然后您需要考虑代码的流程和逻辑。所以也许把它画在一张纸上，我的理解是这样的：

1. 从"Resources\arguments.txt"读取文本
2. 如果Windowed.IsChecked 为真，则将参数-screen-fullscreen 0 添加到文本中
3. 如果Windowed.IsChecked 为假，则将参数-screen-fullscreen 0 添加到文本中
4. 将新文本保存到文件中。

也许在记住这些步骤的情况下回顾您的原始代码，看看您是否可以发现冗余代码。

Answer 3

你只需要稍微改变你的最终逻辑：

if (windowed == true)
{
    string createTextWindowed = "-screen-fullscreen 0" + Environment.NewLine;
    File.WriteAllText(@"Resources\arguments.txt", createTextWindowed);
}
else
{
    string createTextFullscreen = "-screen-fullscreen 1" + Environment.NewLine;
    File.WriteAllText(@"Resources\arguments.txt", createTextFullscreen);
}

然后把支票放在最后

Answer 4

试试这个

private void SaveClose_Click(object sender, RoutedEventArgs e)
{
    string text = File.ReadAllText(@"Resources\arguments.txt");

    string createTextWindowed = "-screen-fullscreen 0" + Environment.NewLine;
    string createTextFullscreen = "-screen-fullscreen 1" + Environment.NewLine;

    if (Windowed.IsChecked == true)
    {
          File.WriteAllText(@"Resources\arguments.txt", createTextWindowed);
    }
    else
    {
          File.WriteAllText(@"Resources\arguments.txt", createTextFullscreen);
    }
}

Answer 5

        string createText;

        if (Windowed.IsChecked){
        createText= "-screen-fullscreen 0" + Environment.NewLine;        
        }
        else{
        createText = "-screen-fullscreen 1" + Environment.NewLine;        
    }
File.WriteAllText(@"Resources\arguments.txt", createText);