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Startup times will get faster, but probably not a lot faster. Also, some BCL classes are slower than their C++ counterparts (but then, some BCL classes are faster than the C++ ones).
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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hello
my question is do .NET base class library functions
been written from scratch or do they call the underlying
Win32 API ?
Are Win32 API (classic) and .NET library two
entire different entities?
Kumar.
"They can because they think they can" - Voltaire
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kumaru_san wrote:
Are Win32 API (classic) and .NET library two
entire different entities?
In most cases, no. The .NET BCL functions/classes usually use the Windows API underneath. However, the layer of abstraction they provide in many cases allows one to create implementations of the base classes for other OSes. For instance, the Mono project has created implementations of many BCL classes for Linux and Mac OSX.
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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jdunlap wrote:
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
you shrunk the quote
how come teacher
I'm not an expert yet, but I play one at work. Yeah and here too.
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Are you asking me why I made the quote be in small letters? I did that so that my sig wouldn't take up too much space. 
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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hi !
i want to add buttons to the dropdownButton(when i click the dropdown style button it will show more buttons in the dropdown menu)......
how i can do that.... i m able to add only contextMenu... but i want buttons....
Plz help me...
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I got an email from windevnet yesterday concerning the performance of C# that people may want to check out:
"Does C# Measure Up"
How does C# and its libraries perform against C, C++, D and Java?
http://www.windevnet.com/
Interestingly, it mentions the "D" language, which I had never heard of before. Go figure.
My 20 favorite films:http://www.ymdb.com/user_top20_view.asp?usersid=8912
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Doesn't seem to be anything to read there, just advertising that it's coming in the next issue?
I've never heard of D either, maybe it's a typo or they haven't finalized the article yet?
------------
Tomorrow is the same day as today was yesterday.
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John Cardinal wrote:
Doesn't seem to be anything to read there, just advertising that it's coming in the next issue?
Did you look below the ads?  There's plenty more after the ads, and more after that below some more ads.
John Cardinal wrote:
I've never heard of D either
As they said, it's written by one person, and marketed by a small company, so it's not too well-known.
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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jdunlap wrote:
John Cardinal wrote:
I've never heard of D either
As they said, it's written by one person, and marketed by a small company, so it's not too well-known.
That and theres what I think 2000 languages out there. I think thats what my java instructor told me. Boy that was grueling. All I ever heard was how much worse c++ is compared to Java. That darn SUN
I'm not an expert yet, but I play one at work. Yeah and here too.
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John Cardinal wrote:
I've never heard of D either, maybe it's a typo or they haven't finalized the article yet?
Isn't that the new language that Microsoft is putting out? They are supposed to have a visual version like VC, of that also, right? I do not know how popular Microsoft's VD 1.0 will be, I am sure people will want to get rid of it quickly...
(This was a late night attempt and humor  )
Rocky Moore <><
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D is a programming language that was designed as a successor to C/C++, but to include such things as garbage collection, design by contract, lightweight objects, RAII, compiles to native code, etc, etc. Think of a mix between C# and C++, leaning towards C++. It has some very interesting concepts.
It's designed and implemented by Walter Bright, a C/C++ compiler implementor from way back (I remember his company Zortech, later Zorland).
Cheers, Julian
Program Manager, C#
This posting is provided "AS IS" with no warranties, and confers no rights.
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Conclusions: C++ has better performance in some areas, and C# has better performance in others, and there are a few places that Java outperforms C# and/or C++, but on the whole C# has better performance than Java. C++ starts up faster than C#, and C# has a number of new, modern language features.
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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Hi
I wanna draw many same objects & define when user click on
one from objects. What should i used Graphics or GraphicsPath
Best regards.
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is it possible to loop through each row of a dataset table, and populate the new column based on another column in the same row?
i have a Contacts class, and a Message Center class. Each get their information from completely different databases, and reference only by the ContactID. ( the messages table in its database only has a contactid field .. not a contact name field )
The constructor of the Contact class takes the ContactID as the argument.
I want to create a dataset of the last 50 messages and have the Contact Name in the same data set.
for example:
<br />
. . . . . . . .<br />
string sql = "SELECT ContactID,Message from Messages ORDER BY MessageID DESC LIMIT 50";<br />
SqlDataAdapter da = new SqlDataAdapter(sql,con);<br />
ds = new DataSet();<br />
da.Fill(ds,"Messages");<br />
<br />
ds.Tables["Messages"].Columns.Add("ContactName");<br />
Now how would I iterate through each row of the Messages.ContactID table, and populate the Messages.ContactName field of the same row ?
I hope I made sense =/ .. Thanks for reading this.
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after messing around with the beautiful intellisense of vs, i think this might work:
for(int i=0; i ds.Tables["Issues"].Rows.Count ; i++)
{
Contacts.Contact Contact = new Contacts.Contact(ds.Tables["Messages"].Rows[i]["ContactID"]);
ds.Tables["Messages"].Rows[i]["ContactName"] = Contact.FirstName + " " + Contact.LastName;
}
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In sql I would say
SELECT MES.ContactID, CON.COntactName, MES.Message FROM MessageDatabase..Messages AS MES
INNER JOIN ContactDatabase..Contacts AS CON ON MES.ContactID = CON.ID
ORDER BY MES.MessageID DESC LIMIT 50
that would combine them
or in code
dsTables["Messages"].Columns.Add("ContactName");
foreach( DataRow row in dsTables["Messages"] )
row["ContactName"] = Contact.FullName;
I'm not an expert yet, but I play one at work. Yeah and here too.
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Foreach loop will be work in this case, but in some cases as adding/deleting rows or modifing primary keys or some computations (resetting expressions to null - it's .net error) will not.
Hi,
AW
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explain further on that. Dont see how foreach won't work. Its the same as using a counter just cleaner code. You can always test for null or the famous DBNull value
I'm not an expert yet, but I play one at work. Yeah and here too.
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It's not a joke; see help (.Net Framework, foreach, syntax):
The foreach statement is used to iterate through the collection to get the desired information, but should not be used to change the contents of the collection to avoid unpredictable side effects 
I spent some nights with fighting with error at computed fields/expressions ...
Hi,
AW
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hey can you post a link to that?
I'm not an expert yet, but I play one at work. Yeah and here too.
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Yes and no actually
The foreach statement repeats a group of embedded statements for each element in an array or an object collection. The foreach statement is used to iterate through the collection to get the desired information, but should not be used to change the contents of the collection to avoid unpredictable side effects. The statement takes the following form:
This doesnt mean you cant change the data in the elements of the collections just the contents of a collection.
Like so, if you add, delete, or sort the collection while inside an enumerator it will have un expected results for the simple fact that is an Enumerator and just grabs one time data. Much like modifying a pointer while iterating.
You can change the data inside the elements without it affecting them.
I have more than 20 classes linked to datagrids and use foreach to iterate through them and have not witnessed any unpredicted results yet. And besides all doc code shows ms using that especially in implementing collections.
Could use post a code example or detailed situation so I could try it and determine the root problem.
nick
I'm not an expert yet, but I play one at work. Yeah and here too.
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It's clear. The error is only with computed fields, I send it some time ago to C#corner forum (it's now unusable). It's solved now. The reason is:
1. I created a table with about 400 fields dynamically.
2. I assigned Expression based on another fields to one of them:
dtBufor.Columns["aggr"].Expression="...";
3. I assigned null (or zer-length string) to this expression
4. After it getting from any table field was possible, but setting - sometimes impossible. Using dtBufor.Rows[rowno]["fieldname"] generated an immediate NullObjectReference error and dtBufor.Rows[rowno].ItemArray[fieldno] updated nothing without error
5. After setting Expression="0" it works (workaround).
6. See http://www.codeproject.com/script/comments/forums.asp?forumid=1649&mode=all&userid=56906&select=407524&df=100&app=50&fr=8305#xx407524xx
Hi,
AW
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Hi,
 A terrible mistake I formatted the wrong drive and along with it my C# project.. All I have is the release executable.. Is there any way I can re-engineer this back to my code.. I mean if it's in byte code...
Please Please help!!
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