如何在asp.net核心项目中使用图像流

using System.IO;
using System.Drawing;
using Microsoft.AspNetCore.Mvc;

public IActionResult GetImage()
{
    // 创建一个位图对象
    Bitmap bitmap = new Bitmap(200, 200);
    Graphics graphics = Graphics.FromImage(bitmap);

    // 绘制图像内容
    graphics.FillRectangle(Brushes.Red, 0, 0, 200, 200);
    graphics.DrawString("Hello, Image!", new Font("Arial", 12), Brushes.White, new PointF(50, 80));

    // 将位图保存到内存流中
    MemoryStream memoryStream = new MemoryStream();
    bitmap.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Png);

    // 返回图像流
    return File(memoryStream.ToArray(), "image/png");
}

app.UseEndpoints(endpoints =>
{
    endpoints.MapControllerRoute(
        name: "default",
        pattern: "{controller=Home}/{action=Index}/{id?}");
});

<img src="@Url.Action("GetImage", "YourControllerName")" alt="Image" />