C# Discussion Boards - CodeProject

Ahmed EL Gendy6-Mar-07 3:26

6-Mar-07 3:26

hi all here

i want to know ,that if it is posible to make a variable that i can control it from any page from my website ???
if yes , HoW can i do this ??

Ex: String X ;

page.aspx page2.aspx page3.aspx

x = "abc"; x = "def"; x = "ghi";

i hope that any one understand what i mean.
best regards

Ahemd EL GEndy

Re: How can i make ..

Guffa6-Mar-07 3:36

Guffa

6-Mar-07 3:36

The Application object has a collection where you can put variables. As the Application object is global for the application, any page can use the variable.

Example:

Application["info"] = "asdf";

string info = (string)Application["info"];

When changing application variables you can use Application.Lock and Application.Unlock to make sure that only one page has access to the variables at the moment.

---
single minded; short sighted; long gone;

Re: How can i make ..

Ennis Ray Lynch, Jr.6-Mar-07 11:56

Ennis Ray Lynch, Jr.

6-Mar-07 11:56

Guffa's answer will work if you want an application global. However, from reading, it seems you may want

Session["something"] = 12;
int i = (int)Session["something"];

Also, i you will be managing a large amount of data between pages in session, or application, I would consider creating a serializable object that can be used. Also, instead of retrieving the object from session or application create a static method of the object to retrieve itself.

public class SomeClass{
    private const string SESSION_KEY = "SomeClass";

    public static SomeClass GetInstance(Page page){
        if(Session[SESSION_KEY] == null)
            Session[SESSION_KEY] = new SomeClass();
         return (SomeClass)Session[SESSION_KEY];
    }

    private SomeClass(){}

}

File Not Found

WINDOWPLACEMENT structure in .Net

manustone6-Mar-07 3:21

manustone

6-Mar-07 3:21

Hi All

I'm newbe to interop and marshaling in .Net
I would like to retrieve the position of a window. I use the code below

using System.Runtime.InteropServices;

[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll", SetLastError = true)]
static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);

but I receive error that WINDOWPLACEMENT is not valid.
Is it possible to import it or do I have to create it on my own?

Regards
ManuStone

Re: WINDOWPLACEMENT structure in .Net

Martin#6-Mar-07 3:38

Martin#

6-Mar-07 3:38

Hello,

you have to define the struct WINDOWPLACEMENT in your code;
like:
http://www.pinvoke.net/default.aspx/user32/GetWindowPlacement.html[^]

Editing Datagrid

Member 38935606-Mar-07 3:00

Member 3893560

6-Mar-07 3:00

Hey there,
I am trying to edit a datagrid. Whenever I click the edit button the grid enters edit mode. But when I change the text in the textbox and click the update(link button) the textbox always goes back to the previous text that was in it.
How do I extract the text from the textbox in the datagrid without losing my change.
below is my code for the update process:

public void Update_dgMilage(object sender, DataGridCommandEventArgs e)
{
TextBox StartMiles = new TextBox();
TextBox EndMiles = new TextBox();
TextBox PersonalMiles = new TextBox();
TextBox BusinessMiles = new TextBox();
TextBox TotalMiles = new TextBox();

StartMiles = (TextBox)e.Item.Cells[3].FindControl("txtStartMiles");
EndMiles = (TextBox)e.Item.Cells[4].FindControl("txtEndMiles");
PersonalMiles = (TextBox)e.Item.Cells[6].FindControl("txtPersonalMiles");
BusinessMiles = (TextBox)e.Item.Cells[7].FindControl("txtBusinessMiles");
TotalMiles = (TextBox)e.Item.Cells[8].FindControl("txtTotalMiles");

string connectionString = ConfigurationSettings.AppSettings["connectionString1"];
OracleConnection con = new OracleConnection(connectionString);
con.Open();

string SQLText = @"update appl_support.HSC_LEASED_CAR_MILES set RPE_MILE_START = '" + StartMiles.Text.ToString() + "', RPE_MILE_END = '" + EndMiles.Text.ToString() + "', PERSONAL_MILES = '" + PersonalMiles.Text.ToString() + "', BUSINESS_MILES = '" + BusinessMiles.Text.ToString() + "', TOTAL_MILES = '" + TotalMiles.Text.ToString() + "' where LCM_PKEY = '" + e.Item.Cells[1].Text.ToString() + "'"; //e.Item.Cells[1].Text.ToString()

// assign query and execute
OracleCommand cmd = new OracleCommand(SQLText,con);

cmd.ExecuteNonQuery();

con.Close();
con.Dispose();

//gets datagrid out of edit mode

dgMilage.EditItemIndex = -1;

getLeaseMilage();

}

Please Help anyone

Re: Editing Datagrid

Vasudevan Deepak Kumar6-Mar-07 9:14

Vasudevan Deepak Kumar

6-Mar-07 9:14

I think you should be checking IsPostBack to enter the EditEventHandler to avoid the superflous databind.

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

Convert text retrived from mail body to tiff file

rsgdba6-Mar-07 2:59

rsgdba

6-Mar-07 2:59

Hi!

I'm retrieving mail body text and I need to convert it into multipage tiff file if text does not fit in one A4 size Page. I'm using System.Drawing.Printing.PrintDocument class. I'm facing these problems.

1. It passes the file onto Printer but I need to save it to the disk.
2. I'm not able to get all the text in tiff file, only some portion is returned.
If there is any other class in Dot net framework 2.0, which can be useful here Please let me know.

Many thanks

Saurabh Gupta
Software Engineer

Re: Convert text retrived from mail body to tiff file

m@u6-Mar-07 3:30

m@u

6-Mar-07 3:30

Hi
PrintDocument.Print always causes a Print. to save a multipage Tiff you must do the following:

1. take a look at http://www.codeproject.com/cs/media/SaveMultipageTiff.asp[^] this shows you how to create multipage Tiffs
2. a Multipage Tiff contains one or more Bitmaps so:
- Create a new Bitmap for each page you want to print and set the Size of it to the size of one Page
- Create a Graphics - Object with Graphics.FromImage
- Paint on the Bitmap like you would on the Printer
- Use the Library from 1 to save your Bitmaps into 1 Multipage Tiff Document

hope this helps

greets
m@u

books for c#

Bala subramanyam M6-Mar-07 1:52

Bala subramanyam M

6-Mar-07 1:52

hi every one
iam a beginer learning c#. please suggest me some good books

(M.BALA SUBRAMANYAM)

Re: books for c#

Frank Kerrigan6-Mar-07 2:01

Frank Kerrigan

6-Mar-07 2:01

C# 2005 Step By Step.

Use this with Express C# (its free) and you have your self a very cheap starter pack for development.

Grady Booch: I told Google to their face...what you need is some serious adult supervision. (2007 Turing lecture)

http:\\www.frankkerrigan.com

Re: books for c#

Vasudevan Deepak Kumar6-Mar-07 7:57

Vasudevan Deepak Kumar

6-Mar-07 7:57

Professional C#

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

Re: books for c#

Keshav V. Kamat6-Mar-07 18:26

Keshav V. Kamat

6-Mar-07 18:26

See if you can lay your hands on the following book

- Microsoft Visual C#.NET step by step.
by John Sharp,Jon Jagger

Its been given a good rating by several publishers. Smile | :)

Keshav kamat

Re: books for c#

Keshav V. Kamat6-Mar-07 18:29

Keshav V. Kamat

6-Mar-07 18:29

You can also go for the following most trusted series of the complete reference

C#: The Complete Reference
By Schildt, Herbert

Still I will try to find more easier books for beginners. Smile | :)

Keshav Kamat
India

Re: books for c#

Keshav V. Kamat6-Mar-07 18:34

Keshav V. Kamat

6-Mar-07 18:34

This is again one of the best book for beginners

C#: A beginners Guide
by Herbert Schildt

Its been given a 4.5 rating.

I remember, I just happened to glance through this book.
Its certainly good.

Keshav Kamat Smile | :)

India

Color problem C# WinCE VS2003

trab0076-Mar-07 1:33

trab007

6-Mar-07 1:33

hi,

When I give a button a colour, I can see it in design window. But when I simulate the program the button will be gray. There is something like appearance = "default" but I can't see it by the button (in the properties window).

Could it be that there is a bug in Visual studio 2003 when I program for WindowsCE.
The weird thing is, I can change the font and textheight and also the colour of the form.

Only the color of the button I can't change.

greetz

Re: Color problem C# WinCE VS2003

Frank Kerrigan6-Mar-07 2:02

Frank Kerrigan

6-Mar-07 2:02

Could be your target OS or framework does not support colored buttons. Try using an image button instead.

Grady Booch: I told Google to their face...what you need is some serious adult supervision. (2007 Turing lecture)

http:\\www.frankkerrigan.com

dsn

vijayashanthi6-Mar-07 1:30

vijayashanthi

6-Mar-07 1:30

hi i want to create a dsn in sql server authentication pls help me..

Re: dsn

Frank Kerrigan6-Mar-07 2:04

Frank Kerrigan

6-Mar-07 2:04

Take it this is a file DSN ?

http://www.connectionstrings.com/[^]

Grady Booch: I told Google to their face...what you need is some serious adult supervision. (2007 Turing lecture)

http:\\www.frankkerrigan.com

Re: dsn

Vasudevan Deepak Kumar6-Mar-07 7:57

Vasudevan Deepak Kumar

6-Mar-07 7:57

http://www.databasejournal.com/features/mssql/article.php/2238221[^]

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

mihksoft6-Mar-07 1:28

mihksoft

6-Mar-07 1:28

I make a program and when I run it I can create a component (textbox,...) and I can move and resize this component. I pt a property grid to see component's property and I can see them. But when I move or resize the component the propertygrid didn't auto update. I can't use propertyGrid.Refresh...because that include multiple operations ...
Do you have any idea?

10x Big Grin | :-D

Re: hy

Frank Kerrigan6-Mar-07 2:06

Frank Kerrigan

6-Mar-07 2:06

I think I knwo what you mean, I assume you are developing ASP.NET ie web

You can try and put the grid in Div and set the grid to be 100% width and height. Scroll bars should also kick in as required. Try and use flow layout as well

Grady Booch: I told Google to their face...what you need is some serious adult supervision. (2007 Turing lecture)

http:\\www.frankkerrigan.com

Re: hy

mihksoft6-Mar-07 2:11

mihksoft

6-Mar-07 2:11

I need that in a WindowsApplication in C#

the debugger

hadad6-Mar-07 1:15

hadad

6-Mar-07 1:15

Hello
I'm using windows xp the debugge engine always appear if there is any error
in the apps running specialy with the internet explorer 7. I want to stop it
from doing this .

Dad

Re: the debugger

Christian Graus6-Mar-07 1:26

Christian Graus

6-Mar-07 1:26

Go into the settings for IE and turn off script debugging there.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

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