Drag and drop between my program and explorer [modified] - C# Discussion Boards

John Ad11-Jun-08 4:13

11-Jun-08 4:13

Hi Yogesh,

Refer to the following links:

http://www.codeproject.com/KB/cs/LanChat.aspx

http://www.codeproject.com/KB/IP/ChatMasala.aspx

I hope this would be helpful.

Vinay
ComponentOne LLC.
www.componentone.com

CP IGNORE

leckey11-Jun-08 4:41

leckey

11-Jun-08 4:41

Cross poster.

My oh my.
http://craptasticnation.blogspot.com/[^]

Creating Forms By Type

Dirso11-Jun-08 3:34

Dirso

11-Jun-08 3:34

Hi,

I'd like to create a method that can make an instance of a class just by knowing its type. Something like:

void createInstance(Type formType)
{
  ConstructorInfo info = formType.GetConstructor(new System.Type[] {this.GetType()});
  FormBase res = info.Invoke( new object[] { this });
  return res;
}

I think I missundertood the use of Invoke for ConstructorInfo.

Thanks,
Dirso.

Re: Creating Forms By Type

leppie11-Jun-08 3:54

leppie

11-Jun-08 3:54

Activator.CreateInstance()

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IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: Creating Forms By Type

Dirso11-Jun-08 6:12

Dirso

11-Jun-08 6:12

Thank you so much!!!

Dumping xml schema from the Type/Graph

Eric Burns11-Jun-08 3:25

Eric Burns

11-Jun-08 3:25

I'm having trouble serializing my class and someone suggested I dump the xml schema from the Type/Graph to take a look.

I hunted around and couldn't figure out how to do that.

Could someone help me out?

Thanks!

Re: Dumping xml schema from the Type/Graph

leppie11-Jun-08 3:56

leppie

11-Jun-08 3:56

Hehe, I will answer that!

Open the .NET/VS Command Prompt, and run the following:

xsd /t:MyNamespace.MyType yourdllorexe

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IronScheme - 1.0 alpha 4a out now (29 May 2008)

Drag and drop between my program and explorer [modified]

Razvan Dimescu11-Jun-08 2:49

Razvan Dimescu

11-Jun-08 2:49

Can you point me out in some directions of how to support drag and drop between my application and windows explorer?
The only article that I found on this was the this one written by Michael Dunn, but it's implemented in C++ and it's not even working with Windows Vista.
This article it's doing exactly what I need, but unfortunately it's not working under windows vista even though I'm running it with administrator rights

modified on Wednesday, June 11, 2008 9:33 AM

Re: Drag and drop between my program and explorer

Eslam Afifi11-Jun-08 3:06

Eslam Afifi

11-Jun-08 3:06

I hope this is what you're looking for. http://www.codeproject.com/KB/shell/Explorer_Drag_Drop.aspx

Eslam Afifi

Re: Drag and drop between my program and explorer

Razvan Dimescu11-Jun-08 3:14

Razvan Dimescu

11-Jun-08 3:14

Thank you Eslam!
I found that article too but it only supports copy from the console while I am more interested in a mouse drop rather than ctrl c

Re: Drag and drop between my program and explorer

Eslam Afifi11-Jun-08 3:21

Eslam Afifi

11-Jun-08 3:21

razvan_dme wrote:
but it only supports copy from the console

What console!!! WTF | :WTF:

It's drag and drop.

Eslam Afifi

Re: Drag and drop between my program and explorer

Razvan Dimescu11-Jun-08 3:31

Razvan Dimescu

11-Jun-08 3:31

Sorry, it was a typo(I meant clipboard). The application you sent me works perfectly under windows xp, but under vista it's not working anymore

Re: Drag and drop between my program and explorer

Eslam Afifi11-Jun-08 3:37

Eslam Afifi

11-Jun-08 3:37

Well, I haven't worked with Vista before so I'll leave it to the experts. Sorry I couldn't help.

Eslam Afifi

Re: Drag and drop between my program and explorer

DaveyM6911-Jun-08 3:39

DaveyM69

11-Jun-08 3:39

What error(s) are you getting under Vista?
I bet it's something to do with permissions - you may have to add an application manifest file and alter the requested execution level.

Dave

convert from Single to Decimal

George_George11-Jun-08 2:15

George_George

11-Jun-08 2:15

Hello everyone,

I think convert from Single or Double to Decimal is always fine since Decimal has broader precision and broader range. Why it is mentioned,

"Conversions from Single or Double to Decimal throw an OverflowException if the result of the conversion is not representable as a Decimal."

http://msdn.microsoft.com/en-us/library/system.decimal(VS.80).aspx

thanks in advance,
George

Re: convert from Single to Decimal

leppie11-Jun-08 2:38

leppie

11-Jun-08 2:38

George_George wrote:
I think convert from Single or Double to Decimal is always fine since Decimal has broader precision and broader range.

floating point types will always have a bigger range, but not precision.

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IronScheme - 1.0 alpha 4a out now (29 May 2008)

Re: convert from Single to Decimal

George_George11-Jun-08 2:44

George_George

11-Jun-08 2:44

Float type has bigger range than Decimal?

regards,
George

Re: convert from Single to Decimal

Guffa11-Jun-08 2:54

Guffa

11-Jun-08 2:54

George_George wrote:
Float type has bigger range than Decimal?

Yes.

Single (float) has a range of -3.402823e38 to +3.402823e38.
Decimal has a range of -79,228,162,514,264,337,593,543,950,335 to +79,228,162,514,264,337,593,543,950,335.

So, the value 8e29 can be stored in a float but not in a Decimal.

Despite everything, the person most likely to be fooling you next is yourself.

Re: convert from Single to Decimal

George_George11-Jun-08 3:26

George_George

11-Jun-08 3:26

Thanks Guffa!

Question answered.

regards,
George

Re: convert from Single to Decimal

Eslam Afifi11-Jun-08 2:44

Eslam Afifi

11-Jun-08 2:44

I think this is because Single and Double are floating point numerical representation. They have value INF (infinity) and NaN (not a number) which cannot be converted to Decimal.
http://en.wikipedia.org/wiki/Floating_point#Dealing_with_exceptional_cases

Eslam Afifi

Re: convert from Single to Decimal

George_George11-Jun-08 2:47

George_George

11-Jun-08 2:47

Hi Eslam,

From the link, it is not mentioned explicitly Nan can not be converted to Decimal. If I missed anything, could you point out please? Smile | :)

regards,
George

Re: convert from Single to Decimal

User 665811-Jun-08 2:54

User 6658

11-Jun-08 2:54

Can't you just try it out for yourself?

float f = float.NaN;
Decimal d = Convert.ToDecimal(f);

yields a OverflowException

modified 12-Sep-18 21:01pm.

Re: convert from Single to Decimal

George_George11-Jun-08 3:24

George_George

11-Jun-08 3:24

My mistake, Greeeg! Float has less precision, but broader range. Smile | :)

regards,
George

Re: convert from Single to Decimal

Eslam Afifi11-Jun-08 3:00

Eslam Afifi

11-Jun-08 3:00

How would you represent INF or NaN as a Decimal? And as leppie said, floating point types cover a wider range than Decimal.
Double.MaxValue = 1.79769313486232E+308
Single.MaxValue = 3.402823E+38
Decimal.MaxValue = 79228162514264337593543950335

Eslam Afifi

Re: convert from Single to Decimal

George_George11-Jun-08 3:25

George_George

11-Jun-08 3:25

My mistake, Eslam! Float has less precision, but broader range.

regards,
George

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