C# Discussion Boards - CodeProject

Re: why should we assigne an object to null?

Alan Balkany23-Jun-08 6:01

Alan Balkany

23-Jun-08 6:01

Ah, so THAT'S why the Code Project agents showed up at my place with a warrent!

Re: why should we assigne an object to null? [modified]

N a v a n e e t h16-Jun-08 20:46

N a v a n e e t h

16-Jun-08 20:46

They both are same. If you are using first one, compiler will give error. But for second one, you will get error only in the runtime.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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modified on Tuesday, June 17, 2008 3:18 AM

Print doc files without MS Word

arslanjatt16-Jun-08 18:55

arslanjatt

16-Jun-08 18:55

Hi,
I have to build a windows application in C#. What the application needs to do is print doc files even Microsoft word is not installed. Do you guys have any solution. Please help me out. Thanks in advance.

regard,
Arslan Ilyas

Re: Print doc files without MS Word

Simon P Stevens16-Jun-08 22:45

Simon P Stevens

16-Jun-08 22:45

.doc is a proprietry format, you need MS word to access it. You may be able to do it with the free "word viewer" but I don't know.

In theory it's possible to reverse engenieer the .doc format and write your own parser to read and print it, but that won't be easy. OpenOffice have obviously done something like that as they can handle word files, so you could start by looking at their source code.

There may be 3rd party libraries out that that provide this kind of functionality (search google), but it's not built into .net as standard.

Simon

How to Add References Dynamically ?

hdv21216-Jun-08 17:29

hdv212

16-Jun-08 17:29

Hi is there any way to add references to my project by code (at runTime)?
thanks.

Re: How to Add References Dynamically ?

dan!sh 16-Jun-08 19:49

dan!sh

16-Jun-08 19:49

Yes[^]

Avoid Google. Use Blackle[^]

Re: How to Add References Dynamically ?

N a v a n e e t h16-Jun-08 20:40

N a v a n e e t h

16-Jun-08 20:40

Use CompilerParameters[^] class and do ReferencedAssemblies.Add().

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: How to Add References Dynamically ?

hdv21217-Jun-08 14:05

hdv212

17-Jun-08 14:05

thanks N a v a n e e t h
but i don't compile my app, i want to add reference to my app at runTime, and i don't want to compile any code.

please solve this webservice problem

Shaik Haneef16-Jun-08 17:09

Shaik Haneef

16-Jun-08 17:09

hi to all

i write some simple webservice in below and put into http://bundi.com/webser.asmx

i take a web refence and created object and it is working fine, plase follow the code and finally please answer my questions

webser.asmx file conetent in which i have in http://bundi.com/webser.asmx
***************

]]>
Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols
Namespace mysimpleWebService

<webservice(namespace:> _
<webservicebinding(conformsto:> _
<global.microsoft.visualbasic.compilerservices.designergenerated()> _
Public Class webser
Inherits System.Web.Services.WebService

<webmethod()> _
Public Function sum(ByVal a As Double, ByVal b As Double) As Double
Return a + b
End Function

End Class

End Namespace

default.aspx page content
*************

Partial Class _Default
Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Dim objweb As New summethod.webser
objweb.sum(19.1, 30.9)
Response.Write("sum result is " & objweb.sum(19.1, 30.9))

End Sub
End Class

here my problem are
**********************

1) this webservice accessign directly how i protect this with password the perticular webservice
2) is anything more need to learn about webservice,what other uses , can u explain any thing more to learn web service

This is haneef.............................................................

SerialPort class with inverted logic

User 1278216-Jun-08 16:07

User 12782

16-Jun-08 16:07

Hi all--

I've written a program to transmit data to a RS-232 device and everything was working fine. Now, due to design constraints, the device uses inverted RS-232 logic. I've tried to compensate for this by inverting my bytes before transmission but that doesn't work. Somebody here thinks that my stop and start bits also have to be inverted and thats why the microcontroller isn't picking anything up.

I'm over my head on this one, anybody have a clue if I'm looking the right direction or is what I'm saying sound stupid?

Thanks,
Aaron

modified 12-Jul-20 21:01pm.

Structs

Illegal Operation16-Jun-08 15:47

Illegal Operation

16-Jun-08 15:47

I need some help again...

I need to create a Struct to pass to an Array, trouble is I have NEVER worked with structs. I am not even sure that this can be done. I have read about structs and my understanding about them are that a class uses the managed heap and a struct uses the stack, this makes for a LITTLE performance gain.

I also understand that you can create your own Value Types for example:

My Variable
{
private string myString;
private int myInt;
}

Theoretically this gives me a variable "Variable" that's of type string and int?? Am I in the right direction??

Thanks in advance!!

Illegal Operation

Re: Structs

N a v a n e e t h16-Jun-08 20:38

N a v a n e e t h

16-Jun-08 20:38

Illegal Operation wrote:
a class uses the managed heap and a struct uses the stack, this makes for a LITTLE performance gain.

It's not true always. It depends on the context where you declare the value type variable. Read this[^]

Illegal Operation wrote:
I also understand that you can create your own Value Types for example:

You can create your own structs which are value types.

struct MySampleStruct
{
   public int a;
}

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: Structs

Alan Balkany17-Jun-08 4:35

Alan Balkany

17-Jun-08 4:35

Good reference.

What's an easy way to add Keys programatically?

That Asian Guy16-Jun-08 12:08

That Asian Guy

16-Jun-08 12:08

I am working with a component which requires a System.Windows.Forms.Keys value. Right now, the only way I know how to change this value programatically, through user input, is:

if (input == "a")
{
key = Keys.A;
}
// ... keep going

I am sure there is an easier way to do this. Can someone help me out?

Thanks in advance.

Re: What's an easy way to add Keys programatically?

Christian Graus16-Jun-08 14:14

Christian Graus

16-Jun-08 14:14

Is there a Keys.FromChar or something ? Is Keys an enum and Enum.Parse would do it ?

Christian Graus

Please read this if you don't understand the answer I've given you

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Re: What's an easy way to add Keys programatically?

Anthony Mushrow16-Jun-08 14:16

Anthony Mushrow

16-Jun-08 14:16

Well, if your in a Console Application then you can use ReadKey which can tell you the key that was pressed.

ConsoleKey thing = Console.ReadKey(true).Key;

The true means that the key the user pressed will not be printed onto the screen.

If you're in a Windows Application then set the forms KeyPreview property to true and use the KeyPress event which will have data on the key that was pressed.

My current favourite word is: I'm starting to run out of fav. words!

-SK Genius

Game Programming articles start -here[^]-

Re: What's an easy way to add Keys programatically?

OR0N16-Jun-08 14:31

OR0N

16-Jun-08 14:31

You want to use the Enum.Parse static method

public static object Parse(<br />
 Type enumType,<br />
 string value,<br />
 bool ignoreCase<br />
);

Applying this method to your example goes like this:

key = (Keys)Enum.Parse(typeof(Keys), input, true);

Don't forget to sanitize the input value.

Re: What's an easy way to add Keys programatically?

Ed.Poore16-Jun-08 14:57

Ed.Poore

16-Jun-08 14:57

It doesn't always work (Unicode & foreign languages are the trickiest) but you can simply cast them:

key = (Keys)input;

I doubt it. If it isn't intuitive then we need to fix it. - Chris Maunder

Re: What's an easy way to add Keys programatically?

That Asian Guy16-Jun-08 15:59

That Asian Guy

16-Jun-08 15:59

I tried this and got error CS0030: Cannot convert type 'string' to 'System.Windows.Forms.Keys'

Re: What's an easy way to add Keys programatically?

Ed.Poore16-Jun-08 22:23

Ed.Poore

16-Jun-08 22:23

Input has to be a char not a string. If you know your input will be a string but only one character long then you can use:

Keys output = (Keys)input[0];

I doubt it. If it isn't intuitive then we need to fix it. - Chris Maunder

Re: What's an easy way to add Keys programatically?

That Asian Guy16-Jun-08 16:05

That Asian Guy

16-Jun-08 16:05

Thanks, it works.

Anyone else seen the new C# .NET CommandBars beta from Codejock? I think I like it :)

gerbiling16-Jun-08 8:09

gerbiling

16-Jun-08 8:09

I was just doing some google searches looking for ways to improve the GUI of my C# app. I stumbled upon Codejock Software and seen they have some really nice C# components. Right now their CommandBars component is still in beta, but I like what I have seen so far. You can find the beta here: http://codejock.com/downloads/[^]

So what do you guys think of this? Should I use this? Any cons to using a third party component?

Thanks Smile | :)