Graphics.DrawString()的中心文本输出

using System.Drawing;
using System.Windows.Forms;

public class CenteredTextForm : Form
{
    public CenteredTextForm()
    {
        this.Size = new Size(300, 200);
        this.Paint += OnPaint;
    }

    private void OnPaint(object sender, PaintEventArgs e)
    {
        string text = "Hello, World!";
        Font font = new Font("Arial", 12);
        Rectangle bounds = this.ClientRectangle;

        // 计算文本的大小
        Size textSize = TextRenderer.MeasureText(text, font);

        // 计算文本的位置，使其居中
        Point textPosition = new Point
        {
            X = bounds.X + (bounds.Width - textSize.Width) / 2,
            Y = bounds.Y + (bounds.Height - textSize.Height) / 2
        };

        // 绘制文本
        TextRenderer.DrawText(e.Graphics, text, font, textPosition, Color.Black);
    }
}