BUG Compiler

Hi,

Repro:

Make a call to the Cursor ctor like this.Cursor = new Cursor(GetType(),
"SomeCur.cur");

DO NOT have the following line in the program... using System.Reflection;

Watch the Cursor ctro FAIL yet no compiler warning.

Add the using System.Reflection; reference

Build, again no compiler errror or warning (this time correctly) and call
the Cursor ctor, it succeeds.

Why no compiler warning or error?

Thanks.

[Nicholas Paldino [.NET/C# MVP]]

The line:

using System.Reflection;

Is not actually setting a reference, but rather, it is declaring the
shorthand for a namespace, which is different.

What is the error that you are getting when you call it?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

<di********@discussion.microsoft.com> wrote in message
news:uu**************@TK2MSFTNGP10.phx.gbl...

Hi,

Repro:

Make a call to the Cursor ctor like this.Cursor = new Cursor(GetType(),
"SomeCur.cur");

DO NOT have the following line in the program... using System.Reflection;
Watch the Cursor ctro FAIL yet no compiler warning.

Add the using System.Reflection; reference

Build, again no compiler errror or warning (this time correctly) and call the Cursor ctor, it succeeds.

Why no compiler warning or error?

Thanks.

ArgumentNullException.

Yet it is perfectly correct parameters. Works fine with the using
System.Reflection but craps out without it.

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:%2****************@TK2MSFTNGP11.phx.gbl...

The line:

using System.Reflection;

Is not actually setting a reference, but rather, it is declaring the
shorthand for a namespace, which is different.

What is the error that you are getting when you call it?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

<di********@discussion.microsoft.com> wrote in message
news:uu**************@TK2MSFTNGP10.phx.gbl...

Hi,

Repro:

Make a call to the Cursor ctor like this.Cursor = new Cursor(GetType(), "SomeCur.cur");

DO NOT have the following line in the program... using

System.Reflection;

Watch the Cursor ctro FAIL yet no compiler warning.

Add the using System.Reflection; reference

Build, again no compiler errror or warning (this time correctly) and

call

the Cursor ctor, it succeeds.

Why no compiler warning or error?

Thanks.

[Jon Skeet [C# MVP]]

<di********@discussion.microsoft.com> wrote:

ArgumentNullException.

Yet it is perfectly correct parameters. Works fine with the using
System.Reflection but craps out without it.

That seems very unlikely to me. Could you post a short but complete
program which demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for what I mean.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Alvin Bruney]

why dont you just code what he said numbnuts

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

<di********@discussion.microsoft.com> wrote:

ArgumentNullException.

Yet it is perfectly correct parameters. Works fine with the using
System.Reflection but craps out without it.

That seems very unlikely to me. Could you post a short but complete
program which demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for what I mean.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Willy Denoyette [MVP]]

IMO this has nothing to do with Reflection, take a look at your call stack,
probably your resource name is different from the one you used to embed the
cursor resource, resuling in a nullreference exception for the (embedded)
stream.

try this:

using System;
using System.Windows.Forms;
using System.Drawing;
namespace HelpCursor
{
class CursorForm : Form
{
static void Main()
{
CursorForm form = new CursorForm();
form.Text = "Hello";
form.BackColor = Color.Blue;
form.Paint += new PaintEventHandler(form.HelloPaintHandler);
Application.Run(form);

}
void HelloPaintHandler(object sender, PaintEventArgs args)
{
CursorForm form = sender as CursorForm;
Graphics grp = args.Graphics;
grp.DrawString("Setting help cursor", form.Font, Brushes.Black, 0, 0);
this.Cursor = new Cursor(GetType(), @"Help.Cur");
}
}
}

compile with : csc /t:winexe cursp1.cs /res:help,HelpCursor.Help.Cur
the help.cur file from the VS distribution(or any other cursor file).
Willy.

<di********@discussion.microsoft.com> wrote in message
news:uu**************@TK2MSFTNGP10.phx.gbl...

Hi,

Repro:

Make a call to the Cursor ctor like this.Cursor = new Cursor(GetType(),
"SomeCur.cur");

DO NOT have the following line in the program... using System.Reflection;
Watch the Cursor ctro FAIL yet no compiler warning.

Add the using System.Reflection; reference

Build, again no compiler errror or warning (this time correctly) and call the Cursor ctor, it succeeds.

Why no compiler warning or error?

Thanks.

[Pete Davis]

First of all, with your attitude, you don't really deserve a response, but
Jon is likely to code it correctly. If the original poster has coded it
incorrectly, the only way to know is if he posts the code, numbnuts!
"Alvin Bruney" <alvin.bruney@.telia.com.> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

why dont you just code what he said numbnuts

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

<di********@discussion.microsoft.com> wrote:

ArgumentNullException.

Yet it is perfectly correct parameters. Works fine with the using
System.Reflection but craps out without it.

That seems very unlikely to me. Could you post a short but complete
program which demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for what I mean.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Alvin Bruney]

Temper temper :P
"Pete Davis" <pd******@hotmail.com> wrote in message
news:ce******************************@news.meganet news.com...

First of all, with your attitude, you don't really deserve a response, but
Jon is likely to code it correctly. If the original poster has coded it
incorrectly, the only way to know is if he posts the code, numbnuts!
"Alvin Bruney" <alvin.bruney@.telia.com.> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

why dont you just code what he said numbnuts

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

<di********@discussion.microsoft.com> wrote:
> ArgumentNullException.
>
> Yet it is perfectly correct parameters. Works fine with the using
> System.Reflection but craps out without it.

That seems very unlikely to me. Could you post a short but complete
program which demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for what I mean.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[100]

Hi,
I haven't got this particular Cursor constructor working either. I think
there is some problem in the Cursor class.
Actually, I haven't tried hard.
To load a cursor from resource get the cursor resouce as a stream and use
Cursor's constructor which accepts
streams.

I don't see any reason to have "using System.Reflection" line since you
don't use any type defined in this namespace.

HTH
B\rgds
100

<di********@discussion.microsoft.com> wrote in message
news:uu**************@TK2MSFTNGP10.phx.gbl...

Hi,

Repro:

Make a call to the Cursor ctor like this.Cursor = new Cursor(GetType(),
"SomeCur.cur");

DO NOT have the following line in the program... using System.Reflection;
Watch the Cursor ctro FAIL yet no compiler warning.

Add the using System.Reflection; reference

Build, again no compiler errror or warning (this time correctly) and call the Cursor ctor, it succeeds.

Why no compiler warning or error?

Thanks.

[Stu Smith]

You're the fake Alvin Bruney, right, as opposed to the clever one?
Can you keep your email constant so I don't have to keep adding you to my
kill-file?
"Alvin Bruney" <alvin.bruney@.telia.com.> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

why dont you just code what he said numbnuts

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

<di********@discussion.microsoft.com> wrote:

ArgumentNullException.

Yet it is perfectly correct parameters. Works fine with the using
System.Reflection but craps out without it.

That seems very unlikely to me. Could you post a short but complete
program which demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for what I mean.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Alvin Bruney]

Yes sir overlord

whatever you say sir overlord.

3 bags full overlord
"Stu Smith" <st*****@remove.digita.com> wrote in message
news:Ot**************@TK2MSFTNGP11.phx.gbl...

You're the fake Alvin Bruney, right, as opposed to the clever one?
Can you keep your email constant so I don't have to keep adding you to my
kill-file?
"Alvin Bruney" <alvin.bruney@.telia.com.> wrote in message
news:%2***************@tk2msftngp13.phx.gbl...

why dont you just code what he said numbnuts

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

<di********@discussion.microsoft.com> wrote:
> ArgumentNullException.
>
> Yet it is perfectly correct parameters. Works fine with the using
> System.Reflection but craps out without it.

That seems very unlikely to me. Could you post a short but complete
program which demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for what I mean.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too