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I am not an expert on this, but I think the Dataset object in ADO.NET will do what you want. It isn't limited to single-table queries but can handle multiple tables and relationships.
It's also disconnected, and knows how to reconcile changes back to the source tables.
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gicio wrote:
Is something like that possible or am I excepting too much
of the .NET?
It is possible, but I don't think there is anything available yet to do so. I've heard of several projects that are working on doing this, but I can't remember any names 
James
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gicio wrote:
Now, I would like to connect the object Model containing
TWO Entities (Patient, Disease) with the relational
database (containing THREE tables).
actually... I would claim that a good design gives you three objects, just like the relational model.
You have the Patient object, the DiseaseCollection object, and the Disease object.
that said, I think it would serve you well to take a look how Connections, Adapters, and Strongly Typed DataSets can fit together to create a very usefull and powerful data object engine.
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is it something like Objectspaces ???
Pawel
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couldn't really tell you the answer there because i'm not too familiar with objectspaces.
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hi!
have you some infos about objectspaces???
Pawel
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How can I open and preview the font in my app?
Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C# and C++!
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Im using a mySQL DB and some obj that does the connect to it (called DBOperation).
in the DBOperation() constructor I do my connecting to the DB
myDb = new OleDbConnection(myConnectionString);
myDb.Open();
then i got some funtions for reading/writing..
in my ~DBOperation() destructor I call a Disconnect() fkt where i do:
myDB.Close
but while Calling that i get a Exception : "Handle is not initialized"
here is the full Exception Text:
Exception: Handle is not initialized.
at System.WeakReference.get_Target()
at System.Data.Common.WeakReferenceCollection.Close(Boolean flag)
at System.Data.OleDb.OleDbConnection.CloseReferences(Boolean canceling)
at System.Data.OleDb.OleDbConnection.DisposeManaged()
at System.Data.OleDb.OleDbConnection.Close()
at DBTest.DBOperation.Disconnect()
at DBTest.DBOperation.Finalize()
Can anyone tell me why this happens ... any Help would be great
Yours LaMagra
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Are you sure your destructor is called?
It sounds like that on yoo, but the destructors in C# is not the same as C++' destructors. It's not a guarantee that C# destructors are called when an object is destroyed. I don't knwo why (have forgot it )
But this maybe wasn't big help to you, sorry! 
Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C# and C++!
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This code doesn't work for me:
String str = this.textBox1.Text;
String newStr = str.Trim();
MessageBox.Show(newStr);
The MessageBox that appears contain the string WITH all white spaces!!!
Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C# and C++!
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Trim only removes leading and trailing whitespace. It doesnt remove the spaces between words etc. Is that what you mean?
--
David Wengier
Sonork ID: 100.14177 - Ch00k
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hm.. what I understod from my book it was suppose to do that... but okay!
Thank ya!
Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C# and C++!
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Nish - Native CPian wrote:
It worked for me
huh?
Well I can compile it... but I missunderstod the use of Trim(). I thought it was suppose to remove all white spaces in the string!
Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C# and C++!
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I think what you're looking for is Replace.
<br />
String str = this.textBox1.Text;<br />
String newStr = str.Replace(" ", "");<br />
MessageBox.Show(newStr);<br />
Andy Gaskell, MCSD MCDBA
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Quote frpm MSDN ( I suggest you use it )
String.Trim Method
Removes all occurrences of a set of specified characters from the beginning and end of this instance.
Overload List
Removes all occurrences of white space characters from the beginning and end of this instance.
<br />
public string Trim();<br />
Removes all occurrences of a set of characters specified in a Unicode character array from the beginning and end of this instance.
<br />
public string Trim(params char[]);<br />
IOW
<br />
String str = this.textBox1.Text;<br />
String newStr = str.Trim(' ');
MessageBox.Show(newStr);<br />
Hope this helps
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Is there anything in C#.that is similar to Control ID's in MFC ?
VIKS
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For what purpose? Without knowing what you wish to do its hard to know if an alternative exists.
James
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Actually I have some MFC code. I don't want to write it down again in c#. That why I need this stuff.
VIKS
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vikrams wrote:
I don't want to write it down again in c#.
If you don't want to write in C#, then why do you bother
..this is a VB Programmers' world and we all are just visitors - Someone in a MSJ article
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As James said, it's hard to suggest something without knowing what you are trying to achieve, but perhaps you are looking for the Control.Name Property
Nish
Author of the romantic comedy
Summer Love and Some more Cricket [New Win]
Buy it, read it and admire me
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Actually I have some MFC routines (inside dll) that I want to use in c# UI .
VIKs
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I am sorry. But I dont have any idea about P/Invoke . can you give little example?
VIKs
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vikrams wrote:
But I dont have any idea about P/Invoke . can you give little example?
In my opinion P/Invoke is ugly and I recommend that you use MC++ and IJW.
Nish
p.s. Chk the Managed C++ sections for some related articles
Author of the romantic comedy
Summer Love and Some more Cricket [New Win]
Buy it, read it and admire me 
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