Question

关于C#Bitmap System.ArgumentException: 参数无效 问题

<%@ WebHandler Language="C#" Class="HttpHandler访问" %>

using System;
using System.Web;
using System.Drawing;
using System.Drawing.Imaging;

public class HttpHandler访问 : IHttpHandler
{

public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "image/JPEG";

string path = HttpContext.Current.Server.MapPath("1.jpg");//运行到这里出现异常
using (Bitmap bitmap = new Bitmap(path))
{
using (Graphics g = Graphics.FromImage(bitmap))
{
g.DrawString("IP：" + context.Request.UserHostAddress, new Font("黑体", 30), Brushes.Red, 0, 0
);
}
bitmap.Save(context.Response.OutputStream, ImageFormat.Jpeg);
}
}
}

Answer 1

你的图片路径不对吧？如果图片不是放在Debug文件夹下的话，这个路径肯定是不对的啊。