C# Discussion Boards - CodeProject

Christian Graus28-Feb-07 18:45

28-Feb-07 18:45

The mouse move is the event that matters. You need to keep track of the co-ordinates it moves to, and use them to draw a line in your onPaint handler. You call Invalidate() to force a Paint event.

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 )

Floting Toolbar

hiremath7128-Feb-07 17:46

hiremath71

28-Feb-07 17:46

I am creating an application in C#
where in I require to add a toolbar.
that is no problem and that is done as well.

What I need now is that the toolbar that i insert should be a floating
toolbar
e.g. any toolbar in Office application is a floating toolbar . One
can drag them anywhere and also fix it on the top.
How do I get my toolbar to be a floating one

help me pls
Thanks
Prasad Smile | :)

Re: Floting Toolbar

stancrm28-Feb-07 19:38

stancrm

28-Feb-07 19:38

How about searching in CodeProject.....

http://www.codeproject.com/cs/menu/ToolBarDock.asp

Re: Floting Toolbar

hiremath711-Mar-07 0:44

hiremath71

1-Mar-07 0:44

hi,

Thank you for u r reply

Actually I am not getting can u say me the steps to create it.

Thank YOu
Prasad Smile | :)

Run From Ram

EscKey200428-Feb-07 16:13

EscKey2004

28-Feb-07 16:13

I am trying to create a application that when it is done updating the files that it need to it has the ability to delete itself. Is there a way of doing this, I thought that maybe if I could launch the program and run it entirely from ram that this would solve the problem.

So does anyone know how I would launch the program and run it from ram or is there a way to delete the executable when it is done?

Re: Run From Ram

Christian Graus28-Feb-07 16:53

Christian Graus

28-Feb-07 16:53

Where else did you think your program is run from ? A program that is running, is in RAM, although the file is locked.

Re: Run From Ram

mav.northwind28-Feb-07 19:31

mav.northwind

28-Feb-07 19:31

You may want to take a look at AppDomain.ShadowCopyFiles.
Simply speaking, with shadow copy enabled, the files holding your classes aren't locked anymore and thus can be deleted while their classes are still loaded in a running program.

Regards,
mav

--
Black holes are the places where God divided by 0...

IDocHostUIHandler [modified]

_808628-Feb-07 15:43

_8086

28-Feb-07 15:43

IDocHostUIHandler[^]Any idea how to solve this? Please help. Crucial Sigh | :sigh:

-- modified at 22:03 Wednesday 28th February, 2007

Re: IDocHostUIHandler [modified]

DavidAtAscent28-Feb-07 17:04

DavidAtAscent

28-Feb-07 17:04

Have you read the info at http://msdn.microsoft.com/library/default.asp?url=/workshop/browser/hosting/wbcustomization.asp[^]?

Unfortunately, all the examples are unmanaged C++. You may need to implement the GetHostInfo() method so as to return appropriate values in the DOCHOSTUIINFO structure.

Also you maybe need to return S_FALSE from the TranslateAccelerator() method.

I did implement this interface some time ago in unmanaged C++ and I'm trying to dig up some old source code.

Also notice that someone else had a working C# implementation of IDocHostUIHandler at
http://www.thescripts.com/forum/thread257999.html[^]

Regards,

David

-- modified at 23:33 Wednesday 28th February, 2007

Re: IDocHostUIHandler

_80861-Mar-07 19:01

_8086

1-Mar-07 19:01

Thanks . But I think I should break my head to understand it. Sigh | :sigh:

286? WOWW! Blush | :O

IMediaEventEx.GetEvent( out code, out p1, out p2, 0 ); - Question

Khoramdin28-Feb-07 13:02

Khoramdin

28-Feb-07 13:02

Hello,

I am using C# dealing with DirectShow and need your help regarding this line of code. Can someone be kind enough and explain to me in plain english this line of code?

IMediaEventEx.GetEvent( out code, out p1, out p2, 0 );

My undrestanding is that the GetEvent method retrieves the next event notification from the event queue. using a txtlog I can see that the local variable "code" contains the Event Code. What I am confused about is, what I am getting on my local variables p1 and p2?

Using the txtlog I can see my p1 is series of digits. But what are they representing and do they have a particular format?

Thank you so much for your help and have a great day.

Khoramdin

Icons for files added to the Deployment project ??

adamhb28-Feb-07 11:43

adamhb

28-Feb-07 11:43

I have a standard windows forms project for which I have created a deployment project. In the deployment project I have added a pdf file which contains the documentation for the application.

In the deployment project I have added a shortcut to the pdf documentation file to the User's Program Menu.

How do I make it so that the icon for this shortcut is the default icon for pdf files? I know that I could add an icon to the Application Folder and have the shortcut file property point to it, however the icon used to represent a pdf document can be different on different target machines. Also, I am not sure how to obtain a pdf icon.

Thanks in advance

Adam

How do I communicate with a stored procedure?

Vernware28-Feb-07 11:04

Vernware

28-Feb-07 11:04

I am developing a program using asp.net 2.0. I am using C# as the programming language.

In this project I am connected to a SQLServer database (SQLServer 2005). I have created a stored procedure in this database and want to call it from C#, pass it some parameters and receive from it a return value.

I am not clear as to how to call it, pass the parameters and then access the return value.

I would appreciate any help/advise/suggestions/etc on this.

Thanks, Vern

Vern

Re: How do I communicate with a stored procedure?

kryzchek28-Feb-07 12:54

kryzchek

28-Feb-07 12:54

Use an SqlCommand object:

<br />
<br />
using System.Data;<br />
using System.Data.SqlClient;<br />
<br />
SqlConnection objConnection = null;<br />
SqlCommand objCommand = null;<br />
<br />
//Set up your SqlConnection object<br />
objConnection = new SqlConnection(YOUR_CONNECTION_STRING);<br />
<br />
//Set up your SqlCommand object<br />
objCommand = new SqlCommand();<br />
objCommand.CommandType = CommandType.StoredProcedure;<br />
objCommand.Connection = objConnection;<br />
objCommand.Connection.Open();<br />
<br />
//Add in any parameters<br />
objCommand.Parameters.Add("@MyParam", MyParamValue);<br />
<br />
objCommand.ExecuteNonQuery();<br />
<br />
if (objCommand.Connection != null)<br />
{<br />
	objCommand.Connection.Close();<br />
	objCommand.Connection.Dispose();<br />
}<br />
<br />
if (objCommand != null)<br />
{<br />
	objCommand.Dispose();<br />
        objCommand = null;<br />
}<br />
<br />

Re: How do I communicate with a stored procedure?

Vernware2-Mar-07 1:57

Vernware

2-Mar-07 1:57

kryzchek:

Thanks for the code. This code and other code I got from this site was very helpful.

Thanks again, Vern

Re: How do I communicate with a stored procedure?

Ennis Ray Lynch, Jr.28-Feb-07 12:59

Ennis Ray Lynch, Jr.

28-Feb-07 12:59

See using System.Data.SqlClient;

Here is some code to play with. If you are returning a query use ExecuteReader instead.

SqlConnection connection = new SqlConnection("someConnectionString");
			SqlCommand command = new SqlCommand();
			command.Connection = connection;
			command.CommandType = System.Data.CommandType.StoredProcedure;
			command.CommandText = "stored procedure name");

			SqlParameter parameterCustomerId = command.CreateParameter();
			parameterCustomerId.DbType = System.Data.DbType.Int64;
			parameterCustomerId.Direction = System.Data.ParameterDirection.Output;
			
			command.ExecuteNonQuery();

I feel so silly, my code doesn't work!

parameterCustomerId.ParameterName = "@customerId";
command.Parameters.Add(parameterCustomerId);

needs to be added before the execute.

File Not Found

Re: How do I communicate with a stored procedure?

Vernware2-Mar-07 1:56

Vernware

2-Mar-07 1:56

Ennis:

Thanks for the tips. This wsa very helpful.

Thanks again, Vern

Date Conversion

mrarunks28-Feb-07 10:38

mrarunks

28-Feb-07 10:38

I am trying to get a 6 or 8 digit date and convert it to a 10 digit mm/dd/ccyy.
The date entered is going to be in mmddyy or mm/dd/yy.

Can you help me on how we do it.

Ps: This is my first project in C#. So excuse me if this is a very basic question.

Thanks,Arun

Re: Date Conversion

Christian Graus28-Feb-07 10:41

Christian Graus

28-Feb-07 10:41

A regex will do this, or the Substring method on the string class will allow you to pull out the pairs of numbers and add a "/" between them.

string date = "120199";
string formated = date.Substring(0,2) + "/" + date.Substring(2,2) + "/" + date.Substring(4);

Note, it's possible to give the substring one parameter, and it grabs the rest of the string.

Re: Date Conversion

Scott Dorman28-Feb-07 14:16

Scott Dorman

28-Feb-07 14:16

You should be able to use any of these: DateTime.Parse, DateTime.TryParse. There is also a DateTime.ParseExact method you could use if you can guarantee the formats.

-----------------------------
In just two days, tomorrow will be yesterday.

Re: Date Conversion

mrarunks1-Mar-07 11:21

mrarunks

1-Mar-07 11:21

Thanks. The DateTime.ParseExact really worked.

When I try this code i get a "System.Exception._COMPlusExceptionCode"
"-532459699" Error. Can you help me out on that one.

string textDate = textBox1.Text;
DateTime MyDate; //= DateTime.Now;
DateTime date;
int len = textDate.Length;
//DateTime MyDate = DateTime.Now;
try
{
if (len == 6)
{
MyDate = DateTime.ParseExact(textBox1.Text,"MM/dd/yyyy", null);
MessageBox.Show(textDate + MyDate);
textDate = MyDate.ToString("MM/dd/yyyy");
}
}
catch (Exception)
{
MessageBox.Show("Enter a valid Date in mmddyy Format");
}

Thanks,Arun

Re: Date Conversion

Scott Dorman1-Mar-07 15:57

Scott Dorman

1-Mar-07 15:57

Sorry, I don't see anything wrong with the code. I was able to run it without any problems, other than to remove the if (len==6) statement so I could test it.

Do you get this error everytime the code runs or just with certain input?

-----------------------------
In just two days, tomorrow will be yesterday.

Re: Date Conversion

mrarunks2-Mar-07 2:53

mrarunks

2-Mar-07 2:53

This is with any date value that I type and happens every time.
I have the same issue even after removing if (len ==6) statement.

Thanks,Arun

Re: Date Conversion

mrarunks2-Mar-07 3:32

mrarunks

2-Mar-07 3:32

I got it. My mistake was to try using the date "121203" and trying to use the
DateTime.ParseExact(txtEffDt.Text, "MM/dd/yyyy", null) instead of DateTime.ParseExact(txtEffDt.Text, "MMddyy", null).
Thanks all for the help.

Thanks,Arun

Re: Date Conversion

Scott Dorman2-Mar-07 4:20

Scott Dorman

2-Mar-07 4:20

No problem. Glad you were able to figure out what was going on. If you know you will only be accepting a limited number of input formats you can pass a string array to the DateTime.ParseExact method and it will try to match against any of the formats in the array.

You also might want to look at the DateTime.TryParseExact method as well. The benefit to this is that it doesn't throw the exception and returns a bool value that indicates if the parse passed. The new date is returned as an out parameter.

-----------------------------
In just two days, tomorrow will be yesterday.

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