QMS.Web/Controllers/_ApiController.cs

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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Text;
using QMS.Common;
using QMS.Model;
using QMS.BLL;
using QMS.Web.Filters;

namespace QMS.Web.Controllers
{
    public class ApiController : Controller
    {
        #region 获取图形验证码
        /// <summary>
        /// 获取图形验证码
        /// GET: /Api/GetImgVerifyCode
        /// </summary>
        /// <returns></returns>
        public ActionResult GetImgVerifyCode(int type = 0)
        {
            VryImgGen gen = new VryImgGen();
            if (type == 0)
            {
                gen.FontSize = 18;
                gen.Padding = 4;
                gen.ChaosColor = Color.DarkGoldenrod;
            }
            string strImgVerifyCode = gen.CreateVerifyCode(4, 0);
            Session["ImgVerifyCode"] = strImgVerifyCode.ToUpper();
            Bitmap bitmap = gen.CreateImage(strImgVerifyCode.ToUpper());
            MemoryStream ms = new MemoryStream();
            bitmap.Save(ms, ImageFormat.Png);
            byte[] fileContent = ms.GetBuffer();
            bitmap.Dispose();
            ms.Close();
            return File(fileContent, "image/png");
        }
        #endregion
    }
}