C# Discussion Boards - CodeProject

Re: How do I delay Windows shutdown with a Console Project in .NET?

DavidWGriffin5-Oct-05 12:05

5-Oct-05 12:05

I got a reply on microsoft.public.dotnet.languages.csharp on this that fixed my problem. I'll reprint it here with his permission in case someone searches here and would like to know how this was resolved:

Willy Denoyette [MVP] Oct 5, 12:23 pm

You can register your own Console control handler by calling Win32 API
SetConsoleCtrlHandler.
Conside following snippet as a sample.

enum CtrlType {
CTRL_C_EVENT = 0,
CTRL_BREAK_EVENT = 1,
CTRL_CLOSE_EVENT = 2,
CTRL_LOGOFF_EVENT = 5,
CTRL_SHUTDOWN_EVENT = 6
}
static object locker = new object();
private delegate bool EventHandler(CtrlType sig);

private static bool Handler(CtrlType sig)
{
bool handled = false;
switch (sig)
{
case CtrlType.CTRL_C_EVENT:
case CtrlType.CTRL_LOGOFF_EVENT:
case CtrlType.CTRL_SHUTDOWN_EVENT:
case CtrlType.CTRL_CLOSE_EVENT:
{
.. do whatever you need to do at shutdown time (here for all
other events too), but keep in mind that the system will kill the process
when you fail to return within 30 seconds.
}
// return true when handled, this signals the system to remove
the process
handled = true;
break;
default:
// return false when not handled
return handled;
}
return handled;
}
static EventHandler _handler;

[DllImport("Kernel32")]
private static extern bool SetConsoleCtrlHandler (EventHandler handler,
bool add);

static void Main()
{
// install the handler
_handler += new EventHandler(Handler);
SetConsoleCtrlHandler(_handler, true);
// and go on
...

Willy.

David W. Griffin
Lockheed Martin Aeronautics Company

Crystal Reports with Multiple Values

dbetting5-Oct-05 2:45

dbetting

5-Oct-05 2:45

I've been trying to find a solution to this problem. Searching here, Business Objects and several other sites, I'm finding many requests outlining the same problem but in none have I found an answer to it.

Given the programatic declaration of a Crystal Report as defined below, it works great in all reports except when I need to use a variable that has to accept multiple values such as prmStatusCodes. With this parameter, the user identifies with check boxes the status' of orders they wish to view.

rptCustomerSummary newRpt = new rptCustomerSummary();
CrystalDecisions.CrystalReports.Engine.ReportDocument rptDocument = new CrystalDecisions.CrystalReports.Engine.ReportDocument();
rptDocument.Load(ReportsPath+"rptCustomerSummary.rpt");
crViewer.ShowGotoPageButton = true;
crViewer.ShowPageNavigateButtons = true;

CrystalDecisions.Shared.TableLogOnInfo rptLogin = new CrystalDecisions.Shared.TableLogOnInfo();
foreach (CrystalDecisions.CrystalReports.Engine.Table tbl in newRpt.Database.Tables)
{
  rptLogin = tbl.LogOnInfo;
  rptLogin.ConnectionInfo.ServerName = dbServer;
  rptLogin.ConnectionInfo.UserID     = dbReportLoginName;
  rptLogin.ConnectionInfo.Password   = dbReportLoginPwd;
  tbl.ApplyLogOnInfo(rptLogin);
}

/* Customer Id Parameter */
currParamValue = new ParameterValues();
paramValue = new ParameterDiscreteValue();
paramValue.Value = CompanyId.ToString();
currParamValue.Add(paramValue);
paramFieldDefs = newRpt.DataDefinition.ParameterFields;
paramFieldDef = paramFieldDefs["prmCustomerId"];
paramFieldDef.ApplyCurrentValues(currParamValue);

/* Selected Status Options */
currParamValue = new ParameterValues();
paramValue = new CrystalDecisions.Shared.ParameterDiscreteValue();
foreach (int i in ReportOptionIntAry)
{
  paramValue.Value = ReportOptionIntAry[i].ToString();
  currParamValue.Add(paramValue);
}
paramFieldDefs = newRpt.DataDefinition.ParameterFields;
paramFieldDef = paramFieldDefs["prmStatusCodes"];
paramFieldDef.ApplyCurrentValues(currParamValue);

crViewer.ReportSource = newRpt;

In Crystal Reports, I've defined the parameter prmStatusCodes as a Discrete of type Number and Allow Multiple Values. In the report Select Expert I have

RPT_CUSTOMER_SUMMARY_V.CUSTOMER_ID} = {?prmCustomerId} and
{RPT_CUSTOMER_SUMMARY_V.STATUS_ID} in {?prmStatusCodes}

In the report, if I change {?prmStatusCodes} to [5, 7, 9, 24] as if the user selected those four statuses, it gives the expected results. If I use the parameter and pass in a set of statuses, only those orders that are the status of the first parameter display. It does matter what parameters are passed in, only the first parameter is recognized.

Can someone point out the error of ways?

How to populate bool array with all true values

jills5-Oct-05 2:39

jills

5-Oct-05 2:39

I want to populate bool array with all true value

in java there is a method called Arrays.Fill to populate all the elements in an array in one go

Is there anything similar in C# ?

jills

Re: How to populate bool array with all true values

Stefan Troschuetz5-Oct-05 4:17

Stefan Troschuetz

5-Oct-05 4:17

There is the Array.Initialize[^] method, but it only works if the array is a value-type array and the value type has a default constructor.

www.troschuetz.de

Re: How to populate bool array with all true values

jills5-Oct-05 19:38

jills

5-Oct-05 19:38

Hey Stefan,
I want to populate the boolean array with all "true" value!
using this Array.Initialize i can initialize them to false value ..
which is by default while u instantiate the bool array !!!

jills

Re: How to populate bool array with all true values

Stefan Troschuetz8-Oct-05 1:42

Stefan Troschuetz

8-Oct-05 1:42

Hi,

i wasn't sure what is the default value value of a boolean. Unfortunately it is the wrong one for your needs Wink | ;)

In this case you won't get around using a for loop to initialize the array:

bool[] array = new bool[5];
for (int index = 0; index < array.Length; index++)
  array[index] = true;

www.troschuetz.de

remote information processing

andre.pietsch5-Oct-05 1:46

andre.pietsch

5-Oct-05 1:46

Hallo,

I want to build a server and a client application.

The server should be some kind of intelligent. He is able to process information from one format to another.

The client should be thumb. On the client machine is an Excel application which could be started by the client.

The situation is that the client starts the Excel application and remembers a pointer to it. This pointer should be send to the server. The server should use the pointer to execute commands directly on the Excel application on the client machine. For example to open an Excel workbook that lies on the client machine and to read information from a worksheet of this workbook.

How can I realize the communication between the server and the client? Can I use Remoting or should I use some kind of socket communication? Is there a tutorial which I can use as a reference?

Thanks allot

Andre Pietsch

PS: sorry if there are mistakes in my english Smile | :)

Image Rotation

PHDENG815-Oct-05 1:39

PHDENG81

5-Oct-05 1:39

I have the following code to rotate an image:

Image img=new Bitmap(400,400);

//assigned to pictureBox 4
pictureBox4.Image=img;
Graphics g=Graphics.FromImage(pictureBox4.Image);

//Create a new matrix
Matrix mm=new Matrix();

mm=new Matrix(1,0,0,-1,0,0);

mm.Translate(25,104,MatrixOrder.Append);

g.Transform=mm;

Matrix mm1=new Matrix();

mm1.RotateAt(
trackBar1.Value,
new Point(67,2),
MatrixOrder.Append);

GraphicsPath gp=new GraphicsPath();

Image imgpic=(Image)Rotor_pictureBox.Image;

gp.AddPolygon(new Point[]{new Point(0,Rotor_pictureBox.Height),new Point(Rotor_pictureBox.Width,Rotor_pictureBox.Height),new Point(0,0)});

gp.Transform(mm1);

//get the resulting path points
PointF[] pts=gp.PathPoints;

//draw on the picturebox content of imgpic using the local transformation
//using the resulting parralleogram described by pts
g.DrawImage(imgpic,pts);
pictureBox4.Refresh();

This code works great. However, I can't get the image to BrintToFront. I need it to rest on top of another picturebox. If there is another picture box within the rotating image's area, it covers it up. I tried to put an image WITHIN the picturebox that the rotating image is being drawn on, but it doesn't show up. Any help would be much appreciated. Thanks.

D

-- modified at 7:41 Wednesday 5th October, 2005

move form without title bar

Rizwan Bashir4-Oct-05 23:59

Rizwan Bashir

4-Oct-05 23:59

I have designed a form with border style = none.
now I put the panel on top what I want is to move the form on mousedown event of panel. if any one can help me would be appreciated. I found one code for VB.Net . if any one can convert this would be great

Private Declare Function ReleaseCapture Lib "user32" () As Integer
'UPGRADE_ISSUE: Declaring a parameter 'As Any' is not supported. Click for more: 'ms-help://MS.VSCC.2003/commoner/redir/redirect.htm?keyword="vbup1016"'
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Integer, ByVal wMsg As Integer, ByVal wParam As Integer, ByRef lParam As Object) As Integer

Private Const HTCAPTION As Short = 2
Private Const WM_NCLBUTTONDOWN As Short = &HA1s

Private Const WM_SYSCOMMAND As Short = &H112s

' the event part is

Dim Button As Short = e.Button \ &H100000
Dim Shift As Short = System.Windows.Forms.Control.ModifierKeys \ &H10000
Dim X As Single = VB6.PixelsToTwipsX(e.X)
Dim Y As Single = VB6.PixelsToTwipsY(e.Y)
ReleaseCapture()
SendMessage(Handle.ToInt32, WM_NCLBUTTONDOWN, HTCAPTION, 0)

thanks for the support

Re: move form without title bar

PHDENG815-Oct-05 1:31

PHDENG81

5-Oct-05 1:31

Point MouseCurrrnetPos,MouseNewPos,formPos,formNewPos;
bool mouseDown=false;

private void MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
//Calculate offset

if(e.Button==MouseButtons.Left)
{
mouseDown = true;
MouseCurrrnetPos = Control.MousePosition;
formPos = this.Location;
}
}

private void MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button==MouseButtons.Left)
mouseDown=false;
}

private void MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(mouseDown==true)
{
// get the position of the mouse in the screen
MouseNewPos=Control.MousePosition;

formNewPos.X=MouseNewPos.X-MouseCurrrnetPos.X+formPos.X;
formNewPos.Y=MouseNewPos.Y-MouseCurrrnetPos.Y+formPos.Y;

Location=formNewPos;
formPos=formNewPos;
MouseCurrrnetPos=MouseNewPos;
}

}

Simply call the three event handlers within the "Event" properties for the control you plan to use.

D

joining excel sheet to c#(Ado.net) but giving error

Member 23064614-Oct-05 23:23

Member 2306461

4-Oct-05 23:23

hi
i am trying too connect excel sheet with my program but its giving me an error "unrecognised formt of database" this is my connectionstring

string s="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Book1.xls;Extended Properties="+"Excel 8.0;HDR=Yes;IMEX=1"+"";

con= new OleDbConnection(s);

con.open();//--------------------->its giving exception on this line

helpers hand

How To Convert IHTMLElement to IHTMLElementRender

prochf4-Oct-05 22:04

prochf

4-Oct-05 22:04

First I redefine the IHTMLElementRender interface:
[Guid("3050f669-98b5-11cf-bb82-00aa00bdce0b"),
InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
ComVisible(true),
ComImport]
interface IHTMLElementRender
{
void DrawToDC([In] IntPtr hDC);
void SetDocumentPrinter([In, MarshalAs(UnmanagedType.BStr)] string bstrPrinterName, [In] IntPtr hDC);
};
and the following code is baseing on C#
I am not sure what exactly I am doing wrong:
Process m_Proc=Process.Start("IExplore.exe");
//this.WindowState=FormWindowState.Minimized;
Thread.Sleep(500);
InternetExplorer m_IE = null;
while(m_IE==null)
{
foreach(InternetExplorer Browser in sws)
{
if(Browser.HWND == (int)m_Proc.MainWindowHandle)
{
m_IE = Browser;
break;
}

}
Application.DoEvents();
}
if(m_IE==null)
{
MessageBox.Show("no InternetExplorer open,please try agin");
return;
}
object v1="",v2="",v3="",v4="";
m_IE.Navigate("http://mail.163.com",ref v1,ref v2,ref v3,ref v4);
IHTMLDocument2 doc=(IHTMLDocument2)m_IE.Document;
if(doc==null)
{
MessageBox.Show("why document is null?");
return;
}
IHTMLElement em=(IHTMLElement)doc.body;
if(em==null)
{
MessageBox.Show("IHTMLElement is null");
return;
}
AxWebBrowserSystem.InvalidCastException
But when I Use AxWebBrowser control
the Cast(IHTMLElementRender ren=(IHTMLElementRender)em;) is ok
Thanks for any help! Rose | [Rose]

Need a recursive logic

Chetan Ranpariya4-Oct-05 21:34

Chetan Ranpariya

4-Oct-05 21:34

HI Friends,
Look at this.
I have a array like this.
A B C
P Q R
1 2 3

Now I want something like the following.

AP1, AP1, AP3, AQ1, AQ2, AQ3, AR1, AR2, AR3,
BP1, BP2, BP3, BQ1, BQ2, BQ3, BR1, BR2, BR3,
CP1, CP2, CP3, CQ1, CQ2, CQ3, CR1, CR2, CR3,

The total number of combination will be 3 * 3 * 3;

THis is the problem.
Do u have any recursive logic of this.
Mind well,this array can be of any size.

Thank u all in advance.

Process terminating event

Prashant Gadhave4-Oct-05 21:31

Prashant Gadhave

4-Oct-05 21:31

How can I get an event of one process that is terminating in other process.Any idea ?

Re: Process terminating event

Stefan Troschuetz4-Oct-05 21:55

Stefan Troschuetz

4-Oct-05 21:55

Get a Process object for the wanted process e.g. by calling Process.GetProcessesByName. Then set its EnableRaisingEvents property to true and register to its Exited event.

www.troschuetz.de

Asynchronous Callback

Member 22045224-Oct-05 20:53

Member 2204522

4-Oct-05 20:53

Hi,

I have been trying to use Asynchronous Callback to access
XML Web Services from my client application (Windows Form).
The client will call the method which will return a DataSet
and display the results on the DataGrid.

The problem is, the DataGrid doesn't seem to be updated
everytime the result is returned. Anyone knows why?

I have also checked using Debugger and the web method did
return the correct result.

Thanks.

Re: Asynchronous Callback

Stefan Troschuetz4-Oct-05 22:14

Stefan Troschuetz

4-Oct-05 22:14

Could you please provide some code?

www.troschuetz.de

Re: Asynchronous Callback

S. Senthil Kumar5-Oct-05 1:25

S. Senthil Kumar

5-Oct-05 1:25

Did you use Invoke[^] or BeginInvoke[^] to do the update? If you didn't, you can try using it as you are updating the UI from a callback thread.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Some problem regarding access permission

akshayswaroop4-Oct-05 19:32

akshayswaroop

4-Oct-05 19:32

Hi!
I am having a typical problem ,I am using management classes to get the path for shared folders and files of the system.The code is working fine for console and winforms,but it is not working for web applications.I have tried giving admin rights to aspnet account,but the problem remains there.Please help

ManagementObjectSearcher searcher1=null;
searcher1=new ManagementObjectSearcher("SELECT * FROM Win32_Share");
try
{
foreach(ManagementObject share in searcher1.Get())
{
s=share["Path"].ToString();//for asp.net pages giving null obj ref exception

}

Playing dat files through C# code

Prashant Gadhave4-Oct-05 18:56

Prashant Gadhave

4-Oct-05 18:56

I dont know how to play dat files in a C# form .If anybody has any idea please let me know .Thank you.

Re: Playing dat files through C# code

leppie4-Oct-05 20:47

leppie

4-Oct-05 20:47

And what exactly is this 'dat' file?

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

Creating a xaml project with visual c#

TssPrasad4-Oct-05 18:53

TssPrasad

4-Oct-05 18:53

Hi,

I am beginning visual c# programming with xaml.

I was told, creating xaml file can be done using xamlpad. I am not clear with how to integrate this file with visual c# project and create an corresponding .xaml.cs file and add it under .xaml file.

Can somebody guide me how to create a .xaml project with visual c#, like the sample projects available in winfx sdk samples.

Thanks,

Re: Creating a xaml project with visual c#

David Stone4-Oct-05 20:51

David Stone

4-Oct-05 20:51

Are you using Visual C# 2005 Express or Visual Studio? Or are you compiling everything by hand?

Picture a huge catholic cathedral. In it there's many people, including a gregorian monk choir. You know, those who sing beautifully. Then they start singing, in latin, as they always do: "Ad hominem..."
-Jörgen Sigvardsson

CellChangedDataEvent

RoboIchi4-Oct-05 18:32

RoboIchi

4-Oct-05 18:32

When a value of CELL such as Grid was changed, a setting color wants to change temporarily, but is who or good advice not?

I'm Studying

2 server

aarontan4-Oct-05 18:27

aarontan

4-Oct-05 18:27

Hi,
I have an application which will connect to server A. However if server A fails...it should try to connect to server B. I have no idea how to go about implementing this. Any suggestions?

Wink | ;)

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