Casting Between Data Types in C#

Posted by Jimbo on Stack Overflow See other posts from Stack Overflow or by Jimbo
Published on 2010-04-28T10:46:36Z Indexed on 2010/04/28 10:53 UTC
Read the original article Hit count: 327

Filed under:

c#

|

casting

|

objects

|

datatypes

|

generics

I have (for example) an object of type A that I want to be able to cast to type B (similar to how you can cast an int to a float)

Data types A and B are my own.

Is it possible to define the rules by which this casting occurs?

Example

int a = 1;
float b = (float)a;
int c = (int)b;

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about casting

Interface Casting vs. Class Casting

as seen on Stack Overflow - Search for 'Stack Overflow'
I've been led to believe that casting can, in certain circumstances, become a measurable hindrance on performance. This may be moreso the case when we start dealing with incoherent webs of nasty exception throwing\catching. Given that I wish to create more correct heuristics when it comes to programming… >>> More
Which casting technique is better for doing casting from upper class to lower class in C++

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, i want to cast from upper class pointer to lower class i.e from the base class pointer to derived class pointer. Should i use "Dynamic_cast" or "reinterpret_cast"? please advice me >>> More
Type Casting variables in PHP: Is there a practical example?

as seen on Programmers - Search for 'Programmers'
PHP, as most of us know, has weak typing. For those who don't, PHP.net says: PHP does not require (or support) explicit type definition in variable declaration; a variable's type is determined by the context in which the variable is used. Love it or hate it, PHP re-casts variables on-the-fly… >>> More
Explicit casting doesn't work in default model binding

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using ASP.NET MVC2 and Entity Framework. I am going to simplify the situation a little; hopefully it will make it clearer, not more confusing! I have a controller action to create address, and the country is a lookup table (in other words, there is a one-to-many relationship between Country… >>> More
PHP Equivalent of Java Type-Casting Solution

as seen on Stack Overflow - Search for 'Stack Overflow'
Since PHP has no custom-class type-casting, how would I go about doing the PHP equivalent of this Java code: CustomBaseObject cusBaseObject = cusBaseObjectDao.readCustomBaseObjectById(id); ((CustomChildObject) cusBaseObject).setChildAttribute1(value1); ((CustomChildObject) cusBaseObject).setChildAttribute2(value2); In… >>> More