Type Casting in C#

EDN Admin · Apr 6, 2007

Hi,
 
I am Using VS2005 and framework 2.0

I have read about boxing and unboxing [ ref: <a title="http://msdn2.microsoft.com/en-us/library/yz2be5wk.aspx http://msdn2.microsoft.com/en-us/library/yz2be5wk.aspx http://msdn2.microsoft.com/en-us/library/yz2be5wk.aspx ] at msdn and it is costing more in term of memory usage on the heap, and anybody tell me do i use typecasting or System.Convert.ToInt32 ot ToDateTime etc.
e.g: 
 
TypeCasting: 
int intABC;
intABC = (int)DropDownList.SelectedValue;
 
Converting:
int intABC;
intABC = System.Convert.ToInt32(DropDownList.SelectedValue);
 
From above example which result to a good and optimized performance in terms of memory usage on the heap for objects

 Above was just an example for which selectedvalue returns string, but what if and return type is just an object and i want to convert to int/ string/ etc..

This is required if i am using any type which returns an object type value
 
Is type conversion is equally costing in vb.net though programmer is not doing any casting, but i assume the CLR is doing it return.

My concern from this post is is casting or converting really consume response time to display output to user in ASP.NET and / or the memory of the server is used a lot as boxing creates objects on heap.
 
Regards,
Hardik I. Shah

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Type Casting in C#

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