Re: Need C# Tutorial Writers - Will pay - C# Discussion Boards

Adel83k25-Jul-04 6:02

25-Jul-04 6:02

how can i do something like

If (DateTime.Now >= StoredDateTime) ???

i extract the StoredDateTime from database which is save in earlier time useing

DateTime.Now.ToString();

I don't know the setting of time in the machine so i can't expect the returned format .... so how can i accomplish this task..

ADEL K Khalil

Re: if(DateTime.Now>=OldDateTime)..????

ChrisAdams25-Jul-04 12:43

ChrisAdams

25-Jul-04 12:43

Why are you converting the DateTime to a string. Why not keep it as instance of a DateTime object, you can then use the compare method.

Also, use DateTime.UtcNow, instead of Now - this will ensure that your time is always stored using the same timezone. It's should be quite easy to convert it back to the user's timezone for display purposes.

If your stuck saving it as a string to the database, then you should be able to use the string format objects to control the format it is saved as.

Re: if(DateTime.Now>=OldDateTime)..????

DougW4825-Jul-04 19:17

DougW48

25-Jul-04 19:17

Chris is right, try to make the structure in your database hold a DateTime object and not a string. If you try to query the database for dates using comparisons other than equals, you'll get unexpected results since it'll be returning rows based on the STRING value of the datetime, not the actual datetime.

Good luck!

DotNet DataGrid RowHeight

Aerobatty25-Jul-04 5:08

Aerobatty

25-Jul-04 5:08

How can you read the Row Height in a DotNet Datagrid?

AeroBatty

Re: DotNet DataGrid RowHeight

DougW4825-Jul-04 19:45

DougW48

25-Jul-04 19:45

Since all of the cells in a given row will have the same height, you could use the GetCellBounds( rowNum, colNum ).Height to get the height of any row you want. For instance:

dataGrid1.GetCellBounds( 1, 0 ).Height;

would retrieve the height of row 1.

Hopefully that helps you out!

Good luck!

- D Cool | :cool:

Need C# Tutorial Writers - Will pay

checker_src24-Jul-04 16:49

checker_src

24-Jul-04 16:49

Hi,
We are in need of some c# tutorials to be written for us. The writers will be reimbursed for the work.
These materials should not be copied from elsewhere. This might be a good opportunity for people who have worked on c# projects for more than a year and want to share their expertise.
If these materials are good enough, this can become a good long term opportunity for these experts.
If interested, please write an email with your interest and expertise level to checker_src@lycos.com or reply to this thread.

Thanks
Muthu

Re: Need C# Tutorial Writers - Will pay

Small Rat24-Jul-04 17:57

Small Rat

24-Jul-04 17:57

I want to know some detail about your tutorial, such as what kind of material you need or what is that for, how to organize your tutorial.

Alan Shen

Re: Need C# Tutorial Writers - Will pay

checker_src24-Jul-04 19:15

checker_src

24-Jul-04 19:15

Can you write an email to my id? My id is checker_src@lycos.com

Thanks for your interest.

Re: Need C# Tutorial Writers - Will pay

Grimolfr25-Jul-04 2:57

Grimolfr

25-Jul-04 2:57

I *might* be interested, but not without knowing what types of tutorials you're looking for, what topics you're interested in, and what it's going to be used for.

Grim

(aka Toby)

MCDBA, MCSD, MCP+SB

Need a Second Life?[^]

SELECT * FROM user WHERE clue IS NOT NULL
GO

(0 row(s) affected)

Re: Need C# Tutorial Writers - Will pay

checker_src25-Jul-04 3:39

checker_src

25-Jul-04 3:39

Well we can start with the basic level tutorial. The following is
a rough TOC. If you are interested please send an email to checker_src@lycos.com. It will take 6-12 hrs for me to reply because I might not be having access to external email during office hours. We can discuss the payment and deliverables in emails.

The rates can be discussed. If things are acceptable, it can be a long term opportunity for who can provide original and good content.

TOC:
Each topic should include enough code sample/snippet whichever is applicable. Tutorials should start with compiling the program from command line using csc.exe, then progress to using visual studio.net.
1. Basics of .NET
2. C# basics - compiling code
3. C# data types
4. OOP & C#
5. Intermediate Languate
6. C# Namespaces, classes methods, properties in c#
7. exceptions
8. delegates & events
9. overloading operators
10. Windows Forms - Usage & samples for all controls
11. Controls (I expect the number to be approximately 10-15) Button,
Checkbox, listbox, combobox, menu, grid, Label, Edit control, radio
button, progressbar, tab control, filedialogs, color dialog, tree control,
tool tips.
Also:
ADO.NET - Samples
Printing - samples

After finishing the above, pls do consider the following
intermediate/advanced level topics.
1. Reflection in C#
2. COM Interop
3. Inheritance
4. interfaces
5. Attributes
6. Web services intro
7. Sockets in C# - Server & client
8. Multi-threading in c#

Console Applications

Vickie Madigan24-Jul-04 15:33

Vickie Madigan

24-Jul-04 15:33

Greetings,

I am pretty new to console applications (I mostly used to do C# Windows Applications stuff) and I currently need to create a console application for a little personnal project, however, there are a couple of things that I do not know how to do with the console applications.

1- How do I keep a console alive even though the main method has completed?
2- How can I use a function similar to the timer object in a console application?

I really appreciate your time and replies, thank you.
-Vickie

Re: Console Applications

Small Rat24-Jul-04 17:53

Small Rat

24-Jul-04 17:53

Vickie,

1. I am not sure about what you called "alive", but I think you can start a process like windows service in main method.
2. as to the timer, here is an example from the help file:
using System;
using System.Threading;

class TimerExampleState
{
public int counter = 0;
public Timer tmr;
}

class App
{
public static void Main()
{
TimerExampleState s = new TimerExampleState();

// Create the delegate that invokes methods for the timer.
TimerCallback timerDelegate = new TimerCallback(CheckStatus);

// Create a timer that waits one second, then invokes every second.
Timer timer = new Timer(timerDelegate, s,1000, 1000);

// Keep a handle to the timer, so it can be disposed.
s.tmr = timer;

// The main thread does nothing until the timer is disposed.
while(s.tmr != null)
Thread.Sleep(0);
Console.WriteLine("Timer example done.");
}
// The following method is called by the timer's delegate.

static void CheckStatus(Object state)
{
TimerExampleState s =(TimerExampleState)state;
s.counter++;
Console.WriteLine("{0} Checking Status {1}.",DateTime.Now.TimeOfDay, s.counter);
if(s.counter == 5)
{
// Shorten the period. Wait 10 seconds to restart the timer.
(s.tmr).Change(10000,100);
Console.WriteLine("changed...");
}
if(s.counter == 10)
{
Console.WriteLine("disposing of timer...");
s.tmr.Dispose();
s.tmr = null;
}
}
}

Re: Console Applications

Grimolfr25-Jul-04 2:54

Grimolfr

25-Jul-04 2:54

Vickie Madigan wrote:
1- How do I keep a console alive even though the main method has completed?

- Don't create other threads as background. The app should stay open as long as at least one non-background thread is alive.
- Start a message loop. Either a form or a service, typically.
- Trick the Main method into not exiting until you want, like this:

class Class1
{
	[STAThread]
	static void Main(string[] args)
	{
		//Initialize

		//Execute main code, multi-threaded or otherwise

		//wait until something turns the running flag off
		while (GlobalFlags.Running);
	}
}

internal sealed class GlobalFlags
{
	private static bool _running = true;

	public static bool Running
	{
		get {return _running;}
		set {_running = value;}
	}
}

Vickie Madigan wrote:
2- How can I use a function similar to the timer object in a console application?

Use the System.Timers.Timer object, or a System.Threading.Timer object.

Grim

(aka Toby)

MCDBA, MCSD, MCP+SB

Need a Second Life?[^]

SELECT * FROM user WHERE clue IS NOT NULL
GO

(0 row(s) affected)

Re: Console Applications

Vickie Madigan25-Jul-04 17:24

Vickie Madigan

25-Jul-04 17:24

Well well, this is very CPU-hungry.

Re: Console Applications

Grimolfr26-Jul-04 3:54

Grimolfr

26-Jul-04 3:54

Geez, I assumed you'd know how to make a tight loop not melt the CPU.

Replace while (GlobalFlags.Running); with while (GlobalFlags.Running){System.Threading.Thread.Sleep(100);}

Grim

(aka Toby)

MCDBA, MCSD, MCP+SB

Need a Second Life?[^]

SELECT * FROM user WHERE clue IS NOT NULL
GO

(0 row(s) affected)

XML Data

Anonymous24-Jul-04 10:16

Anonymous

24-Jul-04 10:16

I need to gather data from an xml document and access it in these ways. I need to show all data in 1 window to start then the user can access each section of the form to view and edit the data via seperate forms. For example a customer has a "Details" section, a "Payment" section, and a "Comments" section. When the user pulls an account up it shows these sections in a window. The comments has many lines of comments, the other 2 have details in drop-downs and labels. When the user opens a menu item to view or edit one of these sections i want another window to open so they can view/edit the info. To sum up the problem i need to collaborate these sections so they are easily obtainable (possibly in a dataset) so i can use the data in both the main form and the sub-forms. any comments appreciated.

How to prevent WebBrowser control correspond to click event twice after loads html file twice?

nakey_yang24-Jul-04 8:40

nakey_yang

24-Jul-04 8:40

In my windows application,i embed a Com webbrowser control.In DocumentComplete
Event i add thid code:"Event= (HTMLDocumentEvents2_Event)axWebBrowser1.Document;Event.onclick += new mshtml.HTMLDocumentEvents2_onclickEventHandler(ClickEventHandler);" the ClickEventHandler function is defined as :
private bool ClickEventHandler(mshtml.IHTMLEventObj e)
{
MessageBox.Show(e.type + ":" + e.srcElement.tagName);
return true;
}
Now the problem is,when i first load a html file,it work correctly,but when i load a new file again,the MessageBox appear twice,load third file,it appear three time,and so on.So,What can i do to get rid of it,Let the message just appear one time.

I will appreciate you help!

Microsoft SQL Server Express

Marlun24-Jul-04 5:30

Marlun

24-Jul-04 5:30

Hello!

I just installed Microsoft SQL Server Express and it gave me one warning: That IIS was not installed.

I wonder, do I have to have IIS installed to be able to use Microsoft SQL Server Express with Visual studio and C#? I want to create and play with databases, use northwind and so on.

Thanks in advance!

~~~~~~~~~~~~~~
Martin Lundberg
Student, Sweden

I have to thank every member of the Code Project for making it such a great place for a beginner to learn!

Re: Microsoft SQL Server Express

Dave Kreskowiak24-Jul-04 9:21

Dave Kreskowiak

24-Jul-04 9:21

I haven't tried SQL Express, because I already use SQL Server Enterprise, but the System Requirements don't list IIS as a requirement. My thoughts are you don't need it to use the Server. I can't say anything for the SQL Server Tools though. Those MIGHT be web based...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Microsoft SQL Server Express

Grimolfr25-Jul-04 2:45

Grimolfr

25-Jul-04 2:45

SQL Server Express is the Yukon version of MSDE, right?

If I'm not mistaken, SQL Server Reporting Services is built into Yukon, instead of being an add-on like it is for 2000. The Reporting Services require IIS to be installed for them to work properly.

Most likely this is the functionality that you won't have because you're missing IIS. There may be something else, I haven't been too worried about getting familiar with Yukon yet.

Grim

(aka Toby)

MCDBA, MCSD, MCP+SB

Need a Second Life?[^]

SELECT * FROM user WHERE clue IS NOT NULL
GO

(0 row(s) affected)

Re: Microsoft SQL Server Express

Marlun25-Jul-04 6:22

Marlun

25-Jul-04 6:22

Thank you! =)

~~~~~~~~~~~~~~
Martin Lundberg
Student, Sweden

I have to thank every member of the Code Project for making it such a great place for a beginner to learn!

Winforms Controls

Mankayarkarasi24-Jul-04 2:28

Mankayarkarasi

24-Jul-04 2:28

I am developing a project which features usercontrols like WinForms Controls. I have created controls like text box,picture,etc.,

Each control is a usercontrol and has its own properties.now the problem is when i select the usercontrol i have to get the rectangle that bounds the border of the control when you select a windows control. The user should know which control he/she has selected. Has anyone found a solution for this ?

Thanks in advance Rose | [Rose]

Happy Coding
MankayarKarasi

Re: Winforms Controls

DougW4825-Jul-04 19:36

DougW48

25-Jul-04 19:36

You are making your own controls for textbox, picture, etc? Sounds like you're doing a LOT of work when you don't need to be. Either way, a user control should have a Bounds variable, and you can make your own rectangle object with the information the Bounds variable contains.

Mankayarkarasi wrote:
The user should know which control he/she has selected.

I don't understand what you mean here. Are you trying to highlight the controls, or are there overlapped controls where the selected one needs brought to the front? Explain this a little more.

If you need extra functionality for the controls that already exist in C#, it would be a LOT easier for you to create new classes that inherit the old controls...then just add your new functionality.

Hope I helped out at least a little.

Good luck

- D Cool | :cool:

Re: Winforms Controls

Mankayarkarasi29-Jul-04 0:43

Mankayarkarasi

29-Jul-04 0:43

Thanks. The project I am working inherits few properties from Windows control.

The User can create a report design of his own. so the controls will have the funcition similar to windows control.

When you drag drop a control from Windows forms. A rubberband like highlight will be given to the control.This will be done easily in MFC using crectracker.

In .NET I have dynamically calculated the corners for each control and with graphics has drawn rectangles to the edges. this provides a highlighted control.

Happy Coding
MankayarKarasi

Budding Programmer

doctrane23-Jul-04 23:13

doctrane

23-Jul-04 23:13

I'm a budding programmer looking for vital threads. Learning language and using it are 2 different things although one MUST receive it before they can express it. Grasping the basic concepts of OOD and the languages (VB,C#,C++(concepts)), learning the system classes, .net and language functional constructs (gdi,reflection,diagnostics), etc. etc. , What is(are), the single best tools to use to convert ideas into code?
1. UML??
2. Keep reading??
3. Keep doing??
4. Usage of interfaces, events(delegates)??
5. A pad and a pencil??

Any thoughts to help steer me into coding effective design, architecture, OUTPUT!!! .....TIPS .. pLeAsE
Trane Lives (that's Coltrane)

THANX
ds Confused | :confused:

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.