C# Discussion Boards - CodeProject

Re: AfterCheck event Arg

CocciaStella26-Sep-04 9:00

CocciaStella

26-Sep-04 9:00

ahhh, a good dose of ego deflation.

Thanks!

Reflection : how to transfer messages between to loaded assemblies?

CNU25-Sep-04 17:43

CNU

25-Sep-04 17:43

Hi,
My application loads two assemblies. Now I want to transfer messages between the two loaded assemblies? Is it possible?

Cheers
CNU

How to get local web server's home directory?

CNU25-Sep-04 17:41

CNU

25-Sep-04 17:41

Hi,
I am writing a Windows application using C#, in which I have to copy some files to the local web server's home directory (for ex. c:\inetput\wwwroot or something else). How can I find out the the local web server's home directory? Or is there any other work around?

Cheers
CNU

Re: How to get local web server's home directory?

Colin Angus Mackay26-Sep-04 1:41

Colin Angus Mackay

26-Sep-04 1:41

Open the IIS management console (Administrative Tools --> Internet Information Services) and select the website you want the root folder of (on Windows XP there is only the default website). Right-click the website, select properties from the menu. In the dialog select Home Directory, the information you want is on that tab.

Do you want to know more?

Not getting the response you want from a question asked in an online forum: How to Ask Questions the Smart Way!

Re: How to get local web server's home directory?

CNU27-Sep-04 17:30

CNU

27-Sep-04 17:30

Thanks for the reply.
But I want to know the value of the Home Directory programmatically..
Is it possible?

Cheers
CNU

Re: How to get local web server's home directory?

Colin Angus Mackay27-Sep-04 20:41

Colin Angus Mackay

27-Sep-04 20:41

Okay, I didn't realise you meant programmatically. I thought you wanted to know where to copy your application to.

Cnu wrote:
How can I find out the the local web server's home directory? Or is there any other work around?

I would set the information in the config file of the application because the server editions of Windows can host many websites and therefore have many home directories.

Do you want to know more?

Not getting the response you want from a question asked in an online forum: How to Ask Questions the Smart Way!

Checkers under c#

aeruzcar25-Sep-04 17:31

aeruzcar

25-Sep-04 17:31

Hello there, does anyone know where I can find an example of a checkers program written in c# ??
Thanks!!!!

Re: Checkers under c#

SimonS25-Sep-04 22:25

SimonS

25-Sep-04 22:25

I did a Google and found this.

I haven't downloaded it and don't know if it's complete / a good reference, but it does say that source is included.

Cheers,
Simon

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Re: Checkers under c#

Anonymous26-Sep-04 5:50

Anonymous

26-Sep-04 5:50

Heey thanks a lot, before I asked I did a google search but under c# not under c-sharp
Thanks a lot

Can I put an email to the inbox of the outlook (not outlook express) using outlook object model?

ting66825-Sep-04 16:01

ting668

25-Sep-04 16:01

As title,

I have some existing incoming email and would like to put them to the inbox of outlook. Can I? What is the code?

Thanks

Transfer an SQL database?

cemlouis25-Sep-04 14:09

cemlouis

25-Sep-04 14:09

Hi,

Q1: How can I transfer an SQL database manually? I have a database which is named mydb, I looked at the harddrive and found it on "C:\Program Files\Microsoft SQL Server\MSSQL\Data" there is 2 file one of them is mydb.mdf and the lof file of that. I copied these on another machine on the same path but couldn't make it to work???

Q2: I used the below code to EMPTY a table which is named people but it is not working???:

SqlConnection mySqlConnection4 = new SqlConnection("Initial Catalog=mydb;Data Source=" + comboBox1.SelectedItem.ToString() + ";Integrated Security=SSPI;");
mySqlConnection4.Open();
SqlCommand mySqlCommand4 = mySqlConnection4.CreateCommand();
SqlTransaction myTrans;
myTrans = mySqlConnection4.BeginTransaction(IsolationLevel.ReadCommitted,"SampleTransaction");
mySqlCommand4.Connection = mySqlConnection4;
mySqlCommand4.Transaction = myTrans;
mySqlCommand4.CommandText = "EMPTY people" ;
//mySqlCommand4.ExecuteNonQuery();
myTrans.Commit();
mySqlConnection4.Close();

Anyway What is the problem???

Any help would be greatly appreciated...
Cem Louis

Re: Transfer an SQL database?

Colin Angus Mackay25-Sep-04 14:56

Colin Angus Mackay

25-Sep-04 14:56

Q1: What was the error message when you tried to attach it to the SQL Server on the other machine?

Q2: At a quick glance the line with the ExecuteNonQuery() is commented out. Also, I cannot find the EMPTY keywork in the Transact-SQL reference. Are you sure you are using the right command? I would have used DELETE.

Do you want to know more?

Not getting the response you want from a question asked in an online forum: How to Ask Questions the Smart Way!

trying to fade in and out a picture on a form?

vista2725-Sep-04 13:46

vista27

25-Sep-04 13:46

i'm trying to have a particular picture fade in and out on my form. so the simplest way i thought to achieve this would be to embed another form on my mainform, add a picturebox to that embedded form, and fade that embedded form in and out by incrementing/decrementing the opacity on that embedded form. problem is, changing the opacity on that embedded form does nothing. anyone know why? is there something i need to do differently when changing opacity with embedded forms? is there any easier way i can accomplish this? perhaps just inc/dec the alpha values on the image itself? will that work?

any suggestions/help appreciated!

Re: trying to fade in and out a picture on a form?

Alex Korchemniy25-Sep-04 15:03

Alex Korchemniy

25-Sep-04 15:03

suggestion. do not use a form to do this. i would suggest that you create a custom control to do this.

have a timer and paint the image urself using GDI. as far as alpha levels you are going to have to do a little playing around with GDI+ features. i haven't done much of this but you can take a look at some of the GDI tutorials here on CP. This one looks interesting: http://www.codeproject.com/cs/media/CsTranspTutorial1.asp[^] and this one
http://www.codeproject.com/cs/media/CsTranspTutorial2.asp[^]

Re: trying to fade in and out a picture on a form?

yoaz26-Sep-04 3:43

yoaz

26-Sep-04 3:43

i don't think having 2 forms is a good idea.
maybe you can set the Alpha property of the image by defining System.Drawing.Imaging.ColorMatrix something like:

float[][] matrixItems ={ 
	new float[] {1, 0, 0, 0, 0},
	new float[] {0, 1, 0, 0, 0},
	new float[] {0, 0, 1, 0, 0},
	new float[] {0, 0, 0, xxxf, 0}, 
	new float[] {0, 0, 0, 0, 1}}; 
System.Drawing.Imaging.ColorMatrix colorMatrix = new System.Drawing.Imaging.ColorMatrix(matrixItems);

where xxx is the desired alpha value. its a float between 0 and 1. Now create an image attrbute:

System.Drawing.Imaging.ImageAttributes imageAtt = new System.Drawing.Imaging.ImageAttributes();

Finally, draw the image using the DrawImage function of a Graphics object you have created from your pictureBox, panel, etc. to which you pass the ImageAttributes object you've just created

there are no facts, only interpretations

Reflection and operators

Ben Martin25-Sep-04 12:39

Ben Martin

25-Sep-04 12:39

So, I get a type and I want to check to make sure it supports +, say, and then use it. But operators don't show up for Type.GetMembers() or for Type.FidMembers() or for Type.InvokeMembers(), at least as far as I can tell (and I did make sure I was looking for STATIC members), unless I am doing something wrong. So how do I get at these elusive operators?

"In a mad world, only the mad are sane."

Re: Reflection and operators

Alex Korchemniy25-Sep-04 12:58

Alex Korchemniy

25-Sep-04 12:58

This works for me.... The following is the operator code.

class TestClass
{
public static TestClass operator ++(TestClass tc)
{
// do work here
return tc;
}
}

The following is the reflection code....

TestClass tc = new TestClass();
MethodInfo[] methods = tc.GetType().GetMethods(BindingFlags.Public | BindingFlags.Static);

this way also works...

TestClass tc = new TestClass();
MemberInfo[] members = tc.GetType().GetMembers(BindingFlags.Public | BindingFlags.Static);

Re: Reflection and operators

Ben Martin25-Sep-04 14:52

Ben Martin

25-Sep-04 14:52

Ah, indeed. Yeah, I was doing basically that. The difference was I was doing it in general, and passing in a primitve, for which it evidently does not find operators. Not sure how to get around that problem.

Re: Reflection and operators

Ben Martin25-Sep-04 20:12

Ben Martin

25-Sep-04 20:12

So apparently with primitives the operators are completely built in. This would make sense, since they are in every other language, but somehow one assumes everything will work the same way as the in C#.

So, I suppose I can just check if the object is a primitve that would support the operation I want in addition to checking the supported methods. I looove special cases Smile | :)

"In a mad world, only the mad are sane."

find a record

cmarmr25-Sep-04 12:27

cmarmr

25-Sep-04 12:27

ok i know i can use the method below to find a record using a prime key how do i search on a key that is not a prime key i am useing both sql and foxpro databases

conn.Open();
string search="someString";
OleDbDataAdapter da = new OleDbDataAdapter("select * from test",conn);
DataSet ds = new DataSet("test");
da.FillSchema(ds,System.Data.SchemaType.Source,"test");
da.Fill(ds,"test");
DataRow current;
current=ds.Tables["test"].Rows.Find(search.ToUpper().Trim());
if(current != null)
{

}
da=null;
ds=null;
current=null;
conn.Close();

thanks
chad

Re: find a record

Alex Korchemniy25-Sep-04 12:44

Alex Korchemniy

25-Sep-04 12:44

AFAIK you can only use the Find* method on PKs. You can however try using the DataView and using a RowFilter

Digi cam wizard

Alex Korchemniy25-Sep-04 12:25

Alex Korchemniy

25-Sep-04 12:25

I'm creating a custom program that's going to be used to run a "presentation station". The presentation station should enable the user to supply photos from any camera.

I need to replace the windows camera wizard with my own wizard. I'm going to provide some of the functionality of the original one, and a more elegant UI.

How would I approach this? Would Windows Image Acquistion Automation Layer do the job?

A few details. I need to be able to do the following...
- Most importantly - automatically start my wizard when camera is detected. (i would like the scanner to be ignored if possible)
- Transfer images to computer
- Delete image on camera
- Get thumbnails is optional - can be accomplished by getting full images and creating thumbnails manually

Difference between 2 datetime

Apusnaias25-Sep-04 11:48

Apusnaias

25-Sep-04 11:48

hi everybody,

i have some provlems ti find a good way to make difference between 2 datetime.

for example i want the difference between the DateTime.Now and 2004-05-03 12:56:32.
And i would like to have the result like 0year 4m ?h ?m ?s .

DO you have any idea plz.

thx in advance !

Re: Difference between 2 datetime

Alex Korchemniy25-Sep-04 12:28

Alex Korchemniy

25-Sep-04 12:28

DateTime a;
DateTime b;

TimeSpan ts = a - b;

Smile | :)

Re: Difference between 2 datetime

Apusnaias25-Sep-04 12:44

Apusnaias

25-Sep-04 12:44

well i have already test this , but the results are strange :/

DateTime dt = new DateTime(2004,05,17,04,45,20);<br />
			DateTime dt2 = DateTime.Now;<br />
			TimeSpan ts = dt2-dt;<br />
			DateTime result2 = new DateTime(ts.Ticks);<br />
			Console.WriteLine(dt2.ToString());<br />
			Console.WriteLine(dt.ToString());<br />
			Console.WriteLine(result2.ToString());<br />
			Console.WriteLine(result2.ToString("y'y' M'M' dd'd' H'h' mm'm' ss's'"));

Here are the results :

26/09/2004 00:46:50
17/05/2004 04:45:20

12/05/0001 20:01:30
1y 5M 12d 20h 01m 30s

isn't it strange ?

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