Response.BinaryWrite v/s Response.Write

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Hi Everyone,

I have one HTML page, on submitting I am calling a Hanlder (ASHX).

In handler, I am generating an image. That image should not be saved on client/server machine. So I saved the Image in MemoryStream. After that I need to display that image with some detail text.

I could display the Image with Response.BinaryWrite() method.. but when I try to write text with Response.Write(), text does not appear.

VB

Dim ms As MemoryStream = New MemoryStream()
BCImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg)
context.Response.ContentType = "image/jpeg"
context.Response.Clear()
context.Response.BinaryWrite(ms.ToArray())
context.Response.Write("<BR> HI <BR>")

Any ideas... !!

Posted 24-Oct-10 22:54pm

Sifar - 0

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Comments

Sunasara Imdadhusen 25-Oct-10 5:38am

I think you should provide full privilege of folder

2 solutions

Solution 1

You have told the browser to expect a image of type jpeg with

VB

context.Response.ContentType = "image/jpeg"

so it is not expecting you to also send plain/html text, so it will either ignore it or maybe lump it in with the image data, either way it will not display it.

Posted 25-Oct-10 0:33am

Rod Kemp

Comments

NMehta83 25-Oct-10 6:41am

If you remove this line 'context.Response.ContentType = "image/jpeg"' then also it will not show you the plain/html text. I also tried it.

Sifar - 0 25-Oct-10 6:44am

Yes, I had also tried this.... removing "image/jpeg". No Use. :(

Rod Kemp 25-Oct-10 7:45am

Removing the ContentType has no effect because browsers can display jpg files internally so the first thing a browser sees is a jpg file header and the assumption is made that all data that follows is image data, if you were trying to push a zip or a pdf file out with BinaryWrite and no ContentType you would normally see something very different.

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NMehta83 · Accepted Answer · 2010-10-25T00:56:00

PS:This below code is in C#.
Please do the following steps to resolve it.

Step1: Take 1 new Page Test.aspx

Code behind Test1.aspx.cs

C#

protected void Page_Load(object sender, EventArgs e)
{
System.Drawing.Image BCImage = new  System.Drawing.Bitmap(@"C:\test.jpg");
MemoryStream ms = new MemoryStream();
BCImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
Response.ContentType = "image/jpeg";
Response.Clear();
Response.BinaryWrite(ms.ToArray());
}

Step2: On your handler page

C#

Image img = new Image();
img.ImageUrl = "~/Test1.aspx";
panel1.Controls.Add(img);
Response.Write("<BR> HI <BR>");

Then it will show you both the things(Image and text/html content)

If this helped you then please Vote and accept as Answer :rose:

Response.BinaryWrite v/s Response.Write

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Solution 1

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Response.BinaryWrite v/s Response.Write

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