Re: Testing the type of data - C# Discussion Boards

Re: MultiThreading

led mike5-Jan-07 5:10

led mike

5-Jan-07 5:10

You may want to study some on threads and synchronization for your solution. However I may be wrong because:

asif_aslam wrote:
First Thread reading Method from XML file and starting the 1st Thread.

First thread starts the first thread? I am pretty sure that cannot happen.

and...

asif_aslam wrote:
Onec which ever thread complete method it's takes next method.

We have a communication breakdown because I have no idea what that means.

led mike

Re: MultiThreading

indiaone7-Jan-07 19:56

indiaone

7-Jan-07 19:56

It's my fault.
I have explain properly.
Basically What I want

In my program, two thread running.

Both thread taking method Name from Array and and executing.
Only method name from the Array.

problem is when i m assigning like this i m getting error.

strMN is Variable Name.

strMN getting it's value from the Array.

like this.

string strMN = strMName[i].ToString();

Thread trdIncrementer = new Thread(new ThreadStart(strMN));

Error :-> "strMN is a Variable but it's used like Method"

help me out .

It's arrgent.

Thanks

Re: MultiThreading[What i want]

indiaone8-Jan-07 2:35

indiaone

8-Jan-07 2:35

I have two thread.

I have more than one method in the array.

I want Two thread should run side by side.
and execute methods.

Suppopse array contains four method name:

1.A
2.B
3.C
4.D
So,
First thread take A method name from the array.
Second thread take B method name from the array.

Once Any of these two thread comleted their task then it has to take next C
method from the array....

Example:-

if suppose 1st thread complete before 2nd thread. it' should take 3rd method name then 2nd thread should not take 3rd method name from the array. it should take 4th method name from the array.

Thanks

Re: MultiThreading

led mike8-Jan-07 5:44

led mike

8-Jan-07 5:44

asif_aslam wrote:
string strMN = strMName[i].ToString();

Thread trdIncrementer = new Thread(new ThreadStart(strMN));

If you are trying to execute different operations in threads using configuration information (data) you are going about it all wrong. Implementing that does not require multiple thread methods.

led mike

Testing the type of data

manustone5-Jan-07 0:20

manustone

5-Jan-07 0:20

Hi all

I'm new in C# development.
I've got a function with a parameter of type object that is casted to a string to be used in it.

How to test a variable before passing it to the function? There is some function making sure that a variable I'm using is a string. What checking to do?
I need to use it also with assertion in debug code.

Regards
manuStone

Re: Testing the type of data

Russell Jones5-Jan-07 0:26

Russell Jones

5-Jan-07 0:26

2 ways depending on how you want to play it

if(myUnknownObject is string)
{
string myString = (string)myUnknownObject;
DoStuff(myString);
}

or

string myString = myUnknownObject as string;
DoStuff(myString);

the second way will leave myString as null if myString wasn't a string so you'll have to check for nulls in DoStuff, but you'd do that anyway as a string could be null. The difference is whether a null string has a significance in your application.

HTH

Russell

Re: Testing the type of data

manustone5-Jan-07 0:43

manustone

5-Jan-07 0:43

Hi Russel
thank you very much for your quick response.
Have a nice day
manuStone

Re: Testing the type of data

User 66585-Jan-07 2:09

User 6658

5-Jan-07 2:09

Additional to arachnoids second solution you may also do this:

if(obj is string)
        DoStuff((string)obj);

regards

modified 12-Sep-18 21:01pm.

System.Windows.Forms.WebBrowser and I.E. System cache

Cozumel995-Jan-07 0:19

Cozumel99

5-Jan-07 0:19

I've got a WebBrowser control and when I do a:

browser.Navigate("http://some.url")

it will work fine the first time, but a subsequent call to the same URL will ALWAYS return instantly with the locally cached copy... when what I really want it to do is a complete new download.

How do I force browser.Navigate to ignore the local system cache??

Just for grins, I tried setting:

browser.Refresh(WebBrowserRefreshOption.Completely)

just after the InitializeComponent method, hoping it would force the control to bypass the cache, but it didn't (and according to the documentation, this just does a refresh and doesn't set the DocumentCompleted event anyway...) but I couldn't find anything else that might bypass the cache and force a reload.

What am I missing?

Thanks!
-Dan

Re: System.Windows.Forms.WebBrowser and I.E. System cache

Steve Hansen5-Jan-07 2:11

Steve Hansen

5-Jan-07 2:11

You could always try to create a unique url to display.

Let's say you want to display the microsoft page (http://www.microsoft.com/en/us/default.aspx[^])

If you add a random number after it and put a ? between it. Like this:

http://www.microsoft.com/en/us/default.aspx?541231[^]

This page can never be cached because it could easily mean something to the webserver. If you page already has a ?blabla=something part then you can still do ?blabla=something&rndid.

Re: System.Windows.Forms.WebBrowser and I.E. System cache

Cozumel995-Jan-07 17:24

Cozumel99

5-Jan-07 17:24

Excellent suggestion... not sure why I didn't think of it... Big Grin | :-D

. Not real elegant, but works perfectly! Thanks for the tip and quick reply!

-Dan

how can i obtain memory and pin information of smart divice

02122534-Jan-07 23:59

0212253

4-Jan-07 23:59

Hi everybody! I want to read memory and pin information of smartphone or PDA but i don't know what function can be used in C#. I found in MSDN but it in Visual C++. Now i wonder either i can do it in C# or not. Please help me!
Thank.

execute exe file

suveenmohan4-Jan-07 23:44

suveenmohan

4-Jan-07 23:44

Hi All,
Here i want to execute an .exe file on particular button. Plz hlep

Regards:
Suveen

Re: execute exe file

slugonamission4-Jan-07 23:47

slugonamission

4-Jan-07 23:47

Process.Start(string exeName); is probably the best way. I can't remember the namespace, but it's probably in System.Diagnostics

Re: execute exe file

Christian Graus4-Jan-07 23:47

Christian Graus

4-Jan-07 23:47

PRocess.Start will start any exe for you.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Motion Blur Effect in c#

Black Mole4-Jan-07 23:05

Black Mole

4-Jan-07 23:05

Hi,
I need to add motion blur effect to my image. Did anyone know the code for this in c#.
Thanks

Re: Motion Blur Effect in c#

Pete O'Hanlon4-Jan-07 23:20

Pete O'Hanlon

4-Jan-07 23:20

This article might help (as a starting point).
http://www.codeproject.com/opengl/MotionBlur.asp[^]

the last thing I want to see is some pasty-faced geek with skin so pale that it's almost translucent trying to bump parts with a partner - John Simmons / outlaw programmer

Deja View - the feeling that you've seen this post before.

Re: Motion Blur Effect in c#

Black Mole4-Jan-07 23:46

Black Mole

4-Jan-07 23:46

Hi,
I have seen that code .But it is in c++.

Re: Motion Blur Effect in c#

Christian Graus4-Jan-07 23:49

Christian Graus

4-Jan-07 23:49

My image processing libraries are in C sharp. You should be able to read those, and this article, and work out how to port the code. Then, you can write your own article ç'=

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Motion Blur Effect in c#

Stanciu Vlad5-Jan-07 1:19

Stanciu Vlad

5-Jan-07 1:19

Motion blur is an efect obtaind by exposing a moving object to a reciver for a longer period of time, in witch the object changes it's position.

So, if your image is static and you want to generate a "blurred" version of it I wold recommend you to add to a new ARGB image the original one and with an different alpha value the same image with different displacements, depending on the desired effect. Suposing you want the image to look like moving in a line you would and a sequence of alpha images at diferent y (or x) coordinates (depending on the "speed"). Or for instance if you want your immage to look like an "earth-quake" one, do like in the line instance, but in the + and - direction of the x coordinate (or the floor line).

I hope this helps.

protected internal static readonly ... and I wish the list could continue ...

XP Themes

Russell Jones4-Jan-07 22:17

Russell Jones

4-Jan-07 22:17

How do i detect if windows is using themes or classic mode?

I'm building a control which needs to have 2 comboboxes touching each other(or nearly). If I make them touch in my development environment(windows classic) then they overlap under XP styles. If I make them touch in XP styles there are huge gaps in Windows Classic.

Is there an easy way to find out which mode i'm in or what the drawable area of the control is?

Thanks

Russ

Re: XP Themes

Dominik Reichl4-Jan-07 22:42

Dominik Reichl

4-Jan-07 22:42

To check if themes are enabled, have a look at this property:
System.Windows.Forms.VisualStyles.VisualStyleRenderer.IsSupported[^]

To get detailed information about how comboboxes will be drawn, have a look at this:
System.Windows.Forms.VisualStyles.VisualStyleElement.ComboBox[^]

Too many passwords to remember? Try KeePass Password Safe!

Re: XP Themes

Russell Jones4-Jan-07 22:46

Russell Jones

4-Jan-07 22:46

thank you,

Just what i needed.

Russell

using a namespace

Member 20251764-Jan-07 21:40

Member 2025176

4-Jan-07 21:40

Greeting,
I made a solution with some projects.
Every project has it's own namespace.(ie,ns1,ns2,...)
When I want to use a namespace(ex in ns2 i want to use ns1) with this instruction :
using ns1;
at compile or build time this error occurred :
he type or namespace name 'ns1' could not be found (are you missing a using directive or an assembly reference?)
What I should to do to solve this problem?
Regards

Re: using a namespace

Russell Jones4-Jan-07 21:48

Russell Jones

4-Jan-07 21:48

have you referenced the project that contains a namespace from the one using it?

russell

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