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Can you store multiple data types in System.Array?

Posted By :iswarya     Posted Date :November 14, 2011    Points :40   Category :C# 
No.

You can also find related Interview Question to Can you store multiple data types in System.Array?  below: 

Can you store multiple data types in System.Array?

  
No, If the System.Array is of Some Particular Data Type.(Primitive Data Type)

yes, If the System.Array is of Object Type.

Ex :

create an array of objects.

int in = 50;
string st = "Fifty";

object [] obj = new object[2];
obj[0] = in;
obj[1] = st; (More...)

How is the data structure of System R different from the relational structure?

  
Unlike Relational systems in System R
1.Domains are not supported
2.Enforcement of candidate key uniqueness is optional
3.Enforcement of entity integrity is optional
4.Referential integrity is not enforced (More...)

What is the difference between "using System.Data;" and directly adding the reference from "Add References Dialog Box"?

  
When you compiles a program using command line, u add the references using /r switch. When you compile a program using Visual Studio, it adds those references to our assembly, which are added using "Add Reference" dialog box. While "using" statement facilitates us to use classes without using their fully qualified names.

For example: if u have added a reference to "System.Data.SqlClient" using "Add Reference" dialog box then u can use SqlConnection class like this:

System.Data.SqlClient.SqlConnection

But if u add a "using System.Data.SqlClient" statement at the start of ur code then u can directly use SqlConnection class.

On the other hand if u add a reference using "using System.Data.SqlClient" statement, but don't add it using "Add Reference" dialog box, Visual Studio will give error message while we compile the program. (More...)

What's the difference between the System.Array.CopyTo() and System.Array.Clone() in c#?

  
The first one performs a deep copy of the array, the second one is shallow. (More...)

What Are the Generic Methods of System.Array?

  
The System.Array type is extended with many generic static methods. The generic static methods are designed to automate and streamline common tasks of working with arrays, such as iterating over the array and performing an action on each element, scanning the array looking for a value that matches a certain criteria (a predicate), converting and sorting the array, and so on. Below is a partial listing of these static methods (More...)

What's the difference between the System.Array.CopyTo() and System.Array.Clone()?

  
The Clone() method returns a new array (a shallow copy) object containing all the elements in the original array. The CopyTo() method copies the elements into another existing array. Both perform a shallow copy. A shallow copy means the contents (each array element) contains references to the same object as the elements in the original array. A deep copy (which neither of these methods performs) would create a new instance of each element's object, resulting in a different, yet identacle object. (More...)

Name the classes that are contained in System.Data NameSpace?

  
DataSet
DataTable
DataColumn
DataRow
DataRealation
Constraint (More...)

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