在 C# 控制台应用程序中居中文本仅适用于某些输入

Question

我在 C#.NET4 控制台应用程序中将文本居中时遇到问题。

这是我将文本居中的方法：

private static void centerText(String text)
{
    int winWidth = (Console.WindowWidth / 2);
    Console.WriteLine(String.Format("{0,"+winWidth+"}", text));
}

但是，我只是得到了正常输出的输出。 但是，如果我使用这一行：

Console.WriteLine(String.Format("{0,"+winWidth+"}", "text"));

“文本”应该居中。

我用这两种方法打电话给centerText：

private static void drawStars()
{
    centerText("*********************************************");
}
private static void title(string location)
{
    drawStars();
    centerText("+++ Du er nu her: " + location + "! +++");
    drawStars();
}

Answer 1

试试这个：

private static void centerText(String text)
{
    Console.Write(new string(' ', (Console.WindowWidth - text.Length) / 2));
    Console.WriteLine(text);
}

您的初始代码的问题是您的文本开始 在屏幕中心。您希望文本的中心在那里。

如果你想打印这样居中的整个段落，你需要做更多的工作。

Answer 2

我有自己的调用控制台头的方法：

public static void Header(string title, string subtitle = "", ConsoleColor color = ConsoleColor.White)
{
    int windowWidth = 90 - 2;
    string titleContent = String.Format("║{0," + ((windowWidth / 2) + (title.Length / 2)) + "}{1," + (windowWidth - (windowWidth / 2) - (title.Length / 2) + 1) + "}", title, "║");
    string subtitleContent = String.Format("║{0," + ((windowWidth / 2) + (subtitle.Length / 2)) + "}{1," + (windowWidth - (windowWidth / 2) - (subtitle.Length / 2) + 1) + "}", subtitle, "║");

    Console.WriteLine("╔════════════════════════════════════════════════════════════════════════════════════════╗");
    Console.WriteLine(titleContent);
    if (!string.IsNullOrEmpty(subtitle))
    {
        Console.WriteLine(subtitleContent);
    }
    Console.WriteLine("╚════════════════════════════════════════════════════════════════════════════════════════╝");
}

那你这样称呼YourStaticClass.Header("Test", "Version 1.0");

应该是这样的：

╔════════════════════════════════════════════════════════════════════════════════════════╗
║                                          Test                                          ║
║                                      Version 1.0                                       ║
╚════════════════════════════════════════════════════════════════════════════════════════╝

您可以将windowsWidth 中的90 替换为Console.WindowWidth

更新 - 2019 年 2 月 - 代码清理并动态大小

/// <summary>
/// Application header, also sets the console title
/// </summary>
/// <param name="title">Title of application</param>
/// <param name="subtitle">Subtitle of application</param>
/// <param name="foreGroundColor">Foreground color</param>
public static void Header(string title, string subtitle = "", ConsoleColor foreGroundColor = ConsoleColor.White, int windowWidthSize = 90)
{
    Console.Title = title + (subtitle != "" ? " - " + subtitle : "");
    string titleContent = CenterText(title, "║");
    string subtitleContent = CenterText(subtitle, "║");
    string borderLine = new String('═', windowWidthSize - 2);

    Console.ForegroundColor = foreGroundColor;
    Console.WriteLine($"╔{borderLine}╗");
    Console.WriteLine(titleContent);
    if (!string.IsNullOrEmpty(subtitle))
    {
        Console.WriteLine(subtitleContent);
    }
    Console.WriteLine($"╚{borderLine}╝");
    Console.ResetColor();
}

/// <summary>
/// Align content to center for console. Can be used with decoration if used inside menu or header
/// </summary>
/// <param name="content">Content to center</param>
/// <param name="decorationString">Left and right decoration, default is empty/none</param>
/// <returns>Center aligned text</returns>
public static string CenterText(string content, string decorationString = "", int windowWidthSize = 90)
{
    int windowWidth = windowWidthSize - (2 * decorationString.Length);
    return String.Format(decorationString + "{0," + ((windowWidth / 2) + (content.Length / 2)) + "}{1," + (windowWidth - (windowWidth / 2) - (content.Length / 2) + decorationString.Length) + "}", content, decorationString);
}

Answer 3

传入的文本可能有空格，例如\r\n，然后在调用写入之前将其删除，例如

string textClean = Regex.Replace(text, @"([\r\n])", string.Empty);

// Then center on text clean