I want to display an image directly into the view and so I am calling an action method and writing the image in output stream.
But I am getting error saying "The image cannot be displayed as it contains error". I am sure the image is generating properly but not sure whats wrong with my controller code.. had anyone came across such scenario?
Thanks in advance..
Here is my controller action
[ChildActionOnly]
public ActionResult GetCaptcha()
{
try
{
this.Session["CaptchaImageText"] = GenerateRandomCode();
this.Response.Clear();
this.Response.ContentType = "image/jpeg";
Bitmap img = new Bitmap(Server.MapPath("../Images/captcha.jpg"));
Graphics graphicImage = Graphics.FromImage(img);
graphicImage.SmoothingMode = SmoothingMode.AntiAlias;
graphicImage.DrawString(this.Session["CaptchaImageText"].ToString(),
new Font("Arial", 12, FontStyle.Bold),
SystemBrushes.WindowText, new Point(100, 250));
graphicImage.DrawArc(new Pen(Color.Red, 3), 90, 235, 150, 50, 0, 360);
//Save the new image to the response output stream.
img.Save(this.Response.OutputStream, ImageFormat.Jpeg);
// Create a CAPTCHA image using the text stored in the Session object.
graphicImage.Dispose();
img.Dispose();
}
catch (Exception ex)
{
ex = null;
}
var v = new FileStreamResult(Response.OutputStream,"image/jpeg");
return v;
}
And here is how I am calling the action method from view
<tr><td> <iframe width="200px" height="80px" frameborder="1" scrolling="no"> <img src="@Url.Action("GetCaptcha")" alt="SimpleChart" /> </iframe> </td></tr>
You need to return file instead of EmptyResult
.
return File(imageByteData, "image/png");
and in the view side:
<tr><td> <iframe> <img src='@Url.Action("GetCaptcha")'/> </iframe> </td></tr>
Update
Don't write to response instead do like below.
[ChildActionOnly]
public ActionResult GetCaptcha()
{
try
{
byte[] imageByteData = null
this.Session["CaptchaImageText"] = GenerateRandomCode();
this.Response.Clear();
this.Response.ContentType = "image/jpeg";
Bitmap img = new Bitmap(Server.MapPath("../Images/captcha.jpg"));
Graphics graphicImage = Graphics.FromImage(img);
graphicImage.SmoothingMode = SmoothingMode.AntiAlias;
graphicImage.DrawString(this.Session["CaptchaImageText"].ToString(),
new Font("Arial", 12, FontStyle.Bold),
SystemBrushes.WindowText, new Point(100, 250));
graphicImage.DrawArc(new Pen(Color.Red, 3), 90, 235, 150, 50, 0, 360);
MemoryStream stream = new MemoryStream();
bitmap.Save(stream, ImageFormat.Jpeg);
imageByteData = stream.ToArray();
// Create a CAPTCHA image using the text stored in the Session object.
graphicImage.Dispose();
img.Dispose();
return File(imageByteData, "image/png");
}
catch (Exception ex)
{
ex = null;
}
}