can i chang resolution dpi from c#

Question

2.33/5 (3 votes)

See more:

i want to load int database field in dpi scanner option how to access it from c#

http://imageshack.us/photo/my-images/811/62695829.png/[^]

Posted 4-Aug-12 22:17pm

nagiub2007

Add a Solution

Comments

Kenneth Haugland 5-Aug-12 7:14am

What is stopping you from doing it? Were excactly are you stuck, and did you google it first?

Sergey Alexandrovich Kryukov 5-Aug-12 18:26pm

Not a question. Why changing resolution? This is nothing by a piece of metadata (not in all image formats). If the scan is already done, you cannot change the image quality by changing resolution.
--SA

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Christian Graus · Accepted Answer · 2012-08-05T12:52:00

You want to store the DPI used by your scanner in your db ? It's just an int, storing it is easy. Setting it is the hard bit. There's no TWAIN support in C#, and limited WIA support, so, it depends on if your scanning code has access to DPI settings.

I found this code using google. You should try it.

C#

   private void setItem(IItem item, object property, object value)
       {
           WIA.Property aProperty = item.Properties.get_Item(ref property);
           aProperty.set_Value(ref value);
       }



       internal bool Scan(bool flatBed)
       {

           WIA.DeviceManager manager = new DeviceManager();
           bool result = false;
           object something = 1;
           object somethingElse;
           WIA.Device scanner = manager.DeviceInfos.get_Item(ref something).Connect();
           IItem item = scanner.Items[1];

           setItem(item, "6146", 4);
           setItem(item, "6147", 200);
           setItem(item, "6148", 200);
           setItem(item, "6151", 200 * 8.5);
           setItem(item, "6152", 200 * 11);
}

The first setItem is the color [4 black and white, 2 grayscale, 1 color, 0 unspecified]

The second is horizontal resolution.

The third is veritcal resolution.

The fourth is horizontal scanning area.

The fifth is vertical scanning area.