C# Discussion Boards - CodeProject

Kristian Sixhøj10-Dec-07 8:02

10-Dec-07 8:02

kekrops wrote:
How do i get processor usage status, virtual memory status, physical memory status and free space on C: drive using C# functions?

Look at the performance counter component. It can do all the things you're asking for.

Kristian Sixhoej

"Failure is not an option" - Gene Kranz

Re: How to get system information

alanteigne10-Dec-07 8:49

alanteigne

10-Dec-07 8:49

Here's a little bit of help, pulling code from something I wrote a while back:

add this reference...
using System.Diagnostics;

create a perf counter...
private PerformanceCounter cpuCounter;

define it
cpuCounter = new PerformanceCounter("Processor", "% Processor Time", "_Total", true);

get the value:
cpuCurrValue = Convert.ToInt32(cpuCounter.NextValue());

I created a myPerfMon class that uses the perf counters to get and return the values, and another class that tells it to do so on a timer.

Reading registry values

TheJudeDude10-Dec-07 6:29

TheJudeDude

10-Dec-07 6:29

I am trying to get the Computer's name in the registry under
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ComputerName\ComputerName
with the following:

string strCompName = (string)Registry.LocalMachine.GetValue("SYSTEM\\ControlSet001\\Control\\ComputerName\\ComputerName\\ComputerName");

But I am getting a null value.

BTW I did search the forum, but every post I clicked on from the query sent me to the main forum page.

Thanx in advance!

Jude

Re: Reading registry values

TheJudeDude10-Dec-07 6:44

TheJudeDude

10-Dec-07 6:44

Figured it out. I thought that RegistryKey.CreateSubKey() would create values, but it reads the subkey.

Jude

Re: Reading registry values

Kristian Sixhøj10-Dec-07 7:12

Kristian Sixhøj

10-Dec-07 7:12

This can be accomplished in an easier way:

Environment.MachineName will return the computers NetBIOS name. (If that's what you're looking for).

Kristian Sixhoej

"Failure is not an option" - Gene Kranz

Re: Reading registry values

TheJudeDude10-Dec-07 7:20

TheJudeDude

10-Dec-07 7:20

Heh! That easy!?!?! Thanx for the reply. What I am trying to accomplish is connection to an MSDE on the fly.

So far I got it working!

Jude

Re: Reading registry values

Pete O'Hanlon10-Dec-07 9:24

Pete O'Hanlon

10-Dec-07 9:24

Why not just use localhost?

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

My blog | My articles

triggers

waheed awan10-Dec-07 6:29

waheed awan

10-Dec-07 6:29

is it possible to call a C# code functio from the trigger.....

Re: triggers

Kristian Sixhøj10-Dec-07 7:17

Kristian Sixhøj

10-Dec-07 7:17

waheed awan wrote:
trigger.....

Do you mean event handler?

If I have understood your question, you're asking if it is possible to call a method from an event handler, right? Well, the answer is yes. You just type the name of the method within the event handler, then it will be called every time that event is triggered.

private void timer1_Tick(object sender, EventArgs e)
{
    SomeMethod();
}

Kristian Sixhoej

"Failure is not an option" - Gene Kranz

gridview boundfield link

eyeseetee10-Dec-07 5:04

eyeseetee

10-Dec-07 5:04

Hi does any1 know how to allow a user to click on a boundfield in a gridview and it takes them to another page?
cheers

MS ACCESS 2003 connection from .NET 2005 C#

s3rro10-Dec-07 4:49

s3rro

10-Dec-07 4:49

Hi,
I have a UI with textfields I want to record whatever input is typed to those fields to a db. I created a db in ms access, can someone tell me how to connect these two together.

- I want to write all the field inputs to a db.

Thanks

Re: MS ACCESS 2003 connection from .NET 2005 C#

led mike10-Dec-07 4:57

led mike

10-Dec-07 4:57

I imagine the Database Articles[^] will help you.

Re: MS ACCESS 2003 connection from .NET 2005 C#

Paul Conrad10-Dec-07 10:27

Paul Conrad

10-Dec-07 10:27

http://www.connectionstrings.com[^] might be of use for you.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

How to pass object between MFC C++ DLL and C# program?

JMisfit10-Dec-07 4:22

JMisfit

10-Dec-07 4:22

I really hope I'm not asking a question that has already been answered, I've searched and couldn't find an adequate answer so thought I'd ask and hope that those that understand this technology much better than me can help me out.

The problem: I have a program written in MFC, I want to remove a portion of it and wrap it into a .dll, including an object with over 200 properties and forms so that this common code can be accessed from the program it's currently in as well as newer programs being written in C#. Basically this DLL will allow a user to change many properties of an object and I want to pass that object back and forth between the C# programs and the MFC DLL.

Ideally I'd like to be able to create the object in the C# program, fill its properties, pass the object to the MFC DLL, allow user to edit properties, and pass back to C# program.

Is there a clean way to pass the class object or reference to it in one call without having to pass each property individually?

Thank you for any and all help!

Re: How to pass object between MFC C++ DLL and C# program?

Pete O'Hanlon10-Dec-07 4:27

Pete O'Hanlon

10-Dec-07 4:27

Take a look at PInvoke and see what it can do for you. You are going to have to create a struct on the C# side to map across.

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

My blog | My articles

Re: How to pass object between MFC C++ DLL and C# program?

Rob Graham10-Dec-07 4:32

Rob Graham

10-Dec-07 4:32

If you are going to move the class into a dll anyway, consider reimplementing it a s a COM object with an interface. That can be wrapped in a Com Callable wrapper to give .Net access to the class.

save file

venky45610-Dec-07 4:12

venky456

10-Dec-07 4:12

Hi,
how to save a file in local system without dialog message.
here i pass the file path propgramatically.not use the upload controls.
plz help me to solve the problem asap.

regards

venkat.
venkat

Re: save file

Judah Gabriel Himango10-Dec-07 4:22

Judah Gabriel Himango

10-Dec-07 4:22

Use the System.IO.File APIs. If that's not what you're looking for, you'll need to provide more information.

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Judah Himango

Show Decimal Data in Label.Text

tr_thorn10-Dec-07 4:10

tr_thorn

10-Dec-07 4:10

Hi ,

string strBaglanti = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=ftakip.mdb";

// Baglanti nesnemiz:
OleDbConnection conBaglanti = new OleDbConnection(strBaglanti);
OleDbCommand komut = new OleDbCommand();
komut.CommandType = CommandType.Text;
komut.CommandText = "SELECT sum(F_TUTAR) as toplam FROM F_KAYIT where DURUM='BIZDE'";
komut.Connection = conBaglanti;
conBaglanti.Open();
lblToplam.Text = Convert.ToString(komut.ExecuteScalar());

F_TUTAR COLOUMN IS DECIMAL i wanna show it in lblToplam.Text .. but its show it like 1397 but it must be 1.397,00 Currency.

Re: Show Decimal Data in Label.Text

Pete O'Hanlon10-Dec-07 4:28

Pete O'Hanlon

10-Dec-07 4:28

You are going to have to use one of the string formatters.

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

My blog | My articles

Re: Show Decimal Data in Label.Text

tr_thorn10-Dec-07 20:06

tr_thorn

10-Dec-07 20:06

thanx for ur help.

DataGridView

Member 403999510-Dec-07 3:53

Member 4039995

10-Dec-07 3:53

I am using a DataGridView and had to override the ProcessCmdkey and ProcessDialogKey to treat a enter like a tab. Reason being is with this application the user only uses the 10 key. My problem is that I need to validate a cell before moving on and if the validation fails, I need to put the focus back on that cell. I have tried to use the cell validating and several other methods to put the validation code and then used the following code to set the focus. It seems like it sets the focus but then process the tab.

dgvDetails.CurrentCell.Selected = false;
dgvDetails.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected = true;
dgvDetails.CurrentCell = dgvDetails.SelectedCells[0];

Re: DataGridView

CKnig10-Dec-07 4:06

CKnig

10-Dec-07 4:06

Did you try to set the cancel property of the Validation-event-args?

Re: DataGridView

Member 403999510-Dec-07 5:20

Member 4039995

10-Dec-07 5:20

That worked except instead of using the .value of the cell, I had to use the EditedFormattedValue. I am guessing this is due to a lifecycle issue. Thanks for your help

Static Constructor

Shubhabrata Mohanty10-Dec-07 3:42

Shubhabrata Mohanty

10-Dec-07 3:42

I have a class with a static constructor. First time I access the class the static constructor gets executed and there an exception occurs. After that if I try to access any of the methods of the class I am getting the same exception that was occured in the constructor.

public class Test1
{
static Test1()
{
//some exception here - ExceptionTest
}

public static void LoadData()
{
//if I access this method then I am getting ExceptionTest everytime I call this method.
//The type initializer for 'X.Test1' threw an exception.
}
}

How do I get rid of this?

Thanks
Shubho

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