public ActionResult Captcha()
{
string code = ValidateHelper.CreateValidateCode(5);
_session.SetString("ValidateCode", code);
byte[] bytes = ValidateHelper.CreateValidateGraphic(code);
return(File(bytes, @"image/jpeg"));
}
protected void Page_Load(object sender, EventArgs e)
{
string Code;
var ms = ValidateHelper.CreateValidateGraphic(out Code, 6, 200, 50, 10);
//将生成的图片发回客户端
//RequeryToModeltext页面中引用
Response.ClearContent(); //需要输出图象信息 要修改HTTP头
Response.ContentType = "image/Png";
Response.BinaryWrite(ms.ToArray());
}