sizeof

Roberto Lopes

Hi!,
I have a class in which I have, lets say 8 int members;
I need to know the size of that class ( which is now 8 * 4 bytes ).
In C, we used sizeof( myClass ), but I can't find how to do it in C#.
Any idea how to do it the .Net way ? ( besides using unsafe and sizeof)

Thanks

Nov 17 '05 #1

Subscribe Post Reply

3149

Nicholas Paldino [.NET/C# MVP]

Roberto,

Unsafe is really the only way to do it. However, this isn't the true
size of your class (due to things such as method tables and whatnot).

What is it you are trying to do?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Roberto Lopes" <ro************@yahoo.ca> wrote in message
news:ea**************@TK2MSFTNGP12.phx.gbl...

Hi!,
I have a class in which I have, lets say 8 int members;
I need to know the size of that class ( which is now 8 * 4 bytes ).
In C, we used sizeof( myClass ), but I can't find how to do it in C#.
Any idea how to do it the .Net way ? ( besides using unsafe and sizeof)

Thanks

Nov 17 '05 #2

Shaun Wilson

You will want to look at the Marshal class since sizeof() is for unsafe
codeblocks only. Marshal class has the ability to get the unmanaged storage
requirements of a struct, for instance.

This isn't usually something you need to concern yourself with in the
managed world. Ever.

"Roberto Lopes" <ro************@yahoo.ca> wrote in message
news:ea**************@TK2MSFTNGP12.phx.gbl...

Hi!,
I have a class in which I have, lets say 8 int members;
I need to know the size of that class ( which is now 8 * 4 bytes ).
In C, we used sizeof( myClass ), but I can't find how to do it in C#.
Any idea how to do it the .Net way ? ( besides using unsafe and sizeof)

Thanks

Nov 17 '05 #3

by: Sunil Menon | last post by:

Dear All, A class having no member variables and only a method sizeof(object) will return 1byte in ANSI and two bytes in Unicode. I have the answer for this of how in works in ANSI. But I don't...

C / C++

About the result of sizeof(a class without data members and virtual functions)

by: Xiangliang Meng | last post by:

Hi, all. What will we get from sizeof(a class without data members and virtual functions)? For example: class abnormity { public: string name() { return "abnormity"; }

C / C++

sizeof(struct dirent.d_ino)

by: Martin Pohlack | last post by:

Hi, I have a funtion which shall compute the amount for a later malloc. In this function I need the sizes of some struct members without having an instance or pointer of the struct. As...

C / C++

sizeof (char)(char)2

by: M Welinder | last post by:

This doesn't work with any C compiler that I can find. They all report a syntax error: printf ("%d\n", (int)sizeof (char)(char)2); Now the question is "why?" "sizeof" and "(char)" have...

C / C++

sizeof a + b and strange value

by: dam_fool_2003 | last post by:

#include<stdio.h> int main(void) { unsigned int a=20,b=50, c = sizeof b+a; printf("%d\n",c); return 0; } out put: 24

C / C++

sizeof() style question

by: Christopher C. Stacy | last post by:

Some people say sizeof(type) and other say sizeof(variable). Why?

C / C++

question related to sizeof operator

by: junky_fellow | last post by:

Consider the following piece of code: #include <stddef.h> int main (void) { int i, j=1; char c; printf("\nsize =%lu\n", sizeof(i+j));

C / C++

sizeof

by: pnreddy1976 | last post by:

Hi, How can we write a function, which functionality is similar to sizeof function any one send me source code Reddy

C / C++

Implementing the sizeof operator

by: Abhishek Srivastava | last post by:

Hi, Somebody recently asked me to implement the sizeof operator, i.e. to write a function that accepts a parameter of any type, and without using the sizeof operator, should be able to return...

C / C++

enum { int_size_checked = 1/(sizeof(int)==4) };

by: Francois Grieu | last post by:

Does this reliably cause a compile-time error when int is not 4 bytes ? enum { int_size_checked = 1/(sizeof(int)==4) }; Any better way to check the value of an expression involving sizeof...

C / C++

Basic Javascript concepts

by: aa123db | last post by:

Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...

Javascript

Batch import of multiple excel files into the database

by: ryjfgjl | last post by:

If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...

Data Management

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

Navigating the Data Structures and Algorithms (DSA)

by: BarryA | last post by:

What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...

Algorithms / Advanced Math

Looking to do Android software development, any suggestions? Is flutter better?

by: nemocccc | last post by:

hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?

General

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

General

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

C / C++

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

Online Marketing

Similar topics