How come Image.FromFile() member function is not avaiable?

[Gravity]

Hi,

Refering to the title, I am using Visual Studio .NET 2003, WInXP Pro SP2 to
develop C# on PocketPC.

To me surprise, I cannot locate the member function, FromFile( ) from the
System.Drawing.Image class.

My VS only show 8 members functions from the class;

(1) Dispose
(2) Equal
(3) GetHashCode
(4) GetType
(5) Height
(6) Size
(7) ToString
(8) Width

There are just no FromFile( ), thus I could not load a simple image into my
picture box.

Is it my .NET framework is not configurated or installed correctly? How am I
going to know that?

Please advise. I am really confuss.

 

[Jon Skeet [C# MVP]]

Refering to the title, I am using Visual Studio .NET 2003, WInXP Pro SP2 to
develop C# on PocketPC.

To me surprise, I cannot locate the member function, FromFile( ) from the
System.Drawing.Image class.

My VS only show 8 members functions from the class;

(1) Dispose
(2) Equal
(3) GetHashCode
(4) GetType
(5) Height
(6) Size
(7) ToString
(8) Width

There are just no FromFile( ), thus I could not load a simple image into my
picture box.

Is it my .NET framework is not configurated or installed correctly? How am I
going to know that?

Nothing's misconfigured - if you look at the list of members for the
Image class in MSDN, you'll see that only the above members are marked
as being supported by the Compact Framework.

You need to call a constructor of the Bitmap class instead (Bitmap
derives from Image).

The Compact Framework only supports a subset of the functionality of
the full framework.

 

[Gravity]

Thanks for the information. I understand now.

I am new to C# as my background is purely on C/C++/VC++.

What if I need to display a JPEG file? What are my options here for the
Pocket PC (compact franework?) development?

Hope can get some ideals from you.

 

[Jon Skeet [C# MVP]]

Thanks for the information. I understand now.

I am new to C# as my background is purely on C/C++/VC++.

What if I need to display a JPEG file? What are my options here for the
Pocket PC (compact franework?) development?

The Bitmap class covers that too - it's not Bitmap in the sense of only
handling BMP files, it's Bitmap in terms of Windows internal ideas.

 

[Gravity]

A class named "Bitmap" that handle JPEG as well? That's cool. But I think it
should actually use other name rather than Bitmap.

Can I know where is the member class located?

 

[Jon Skeet [C# MVP]]

A class named "Bitmap" that handle JPEG as well? That's cool. But I think it
should actually use other name rather than Bitmap.

Well, a JPEG is a bitmap too, in the abstract sense. The fault is
really in calling a format after a concept than naming the class after
the concept.

Can I know where is the member class located?

What exactly do you mean?

 

[Gravity]

Thank you.

Well, a JPEG is a bitmap too, in the abstract sense. The fault is
really in calling a format after a concept than naming the class after
the concept.


What exactly do you mean?