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To reverse a string which function is used in VB.NET?

Posted By :Abhisek Panda     Posted Date :December 25, 2009    Points :10   Category :VB.Net 
StrReverse(String):- This function reverse the specified string.

Dim Str,RStr As String
Str="Welcome"
RStr=StrReverse(Str)'returns"emocleW"

You can also find related Interview Question to To reverse a string which function is used in VB.NET?  below: 

How do you write a function that can reverse a linked-list in C++?

  
void reverselist(void)
{
if(head==0)
return;
if(head->next==0)
return;
if(head->next==tail)
{
head->next = 0;
tail->next = head;
}
else
{
node* pre = head;
node* cur = head->next;
node* curnext = cur->next;
head->next = 0;
cur-> next = head;

for(; curnext!=0; )
{
cur->next = pre;
pre = cur;
cur = curnext;
curnext = curnext->next;
}

curnext->next = cur;
}
}


Please visit for any help: http://www.hiredotnetdeveloperindia.com/dot-net-development.php (More...)

What is Method Overriding? How to override a function in C#?

  
Use the override modifier to modify a method, a property, an indexer, or an event. An override method provides a new implementation of a member inherited from a base class. The method overridden by an override declaration is known as the overridden base method. The overridden base method must have the same signature as the override method.
You cannot override a non-virtual or static method. The overridden base method must be virtual, abstract, or override. (More...)

To create a string literal exclude escape sequence

  
@string. With adding @ at the beginning you can escape literal (More...)

String is an...........

  
String is an Object Type. where other data types are reference type in .NET (More...)

Define precondition and post-condition to a member function.

  
Precondition:
A precondition is a condition that must be true on entry to a member function. A class is used correctly if preconditions are never false. An operation is not responsible for doing anything sensible if its precondition fails to hold.
For example, the interface invariants of stack class say nothing about pushing yet another element on a stack that is already full. We say that isful() is a precondition of the push operation.


Post-condition:
A post-condition is a condition that must be true on exit from a member function if the precondition was valid on entry to that function. A class is implemented correctly if post-conditions are never false.
For example, after pushing an element on the stack, we know that isempty() must necessarily hold. This is a post-condition of the push operation. (More...)

Difference between a sub and a function.

  
A Sub Procedure is a method will not return a value
-A sub procedure will be defined with a "Sub" keyword
Sub ShowName(ByVal myName As String)
Console.WriteLine("My name is: " & myName)
End Sub
-A function is a method that will return value(s).
-A function will be defined with a "Function" keyword
Function FindSum(ByVal num1 As Integer, ByVal num2 As Integer) As Integer
Dim sum As Integer = num1 + num2
Return sum
End Function (More...)

Where do you store connection string?

  
Database connection string can be stored in the web config file.
The connection string can be stored in the WEB.Config file under
element. (More...)

What does connection string consist of?

  
The connection string consists of the following parts:
In general:

Server: Whether local or remote.

Uid: User Id (sa-in sql server)

Password: The required password to be filled-in here

Database: The database name. (More...)

Difference between String.Empty and ""

  
The main difference is lies on memory management.

String.Empty will not create any object of string where as "" (Double Quote or Empty Quote) will create a new object in the memory for the checking the objects. (More...)

Explain Virtual Function in C#.

  
Virtual functions implement the concept of polymorphism are the same as in C#, except that you use the override keyword with the virtual function implementaion in the child class.

The parent class uses the same virtual keyword. Every class that overrides the virtual method will use the override keyword.


class Shape{
public virtual void Draw()
{ Console.WriteLine("Shape.Draw") ; }
}
class Rectangle : Shape{
public override void Draw()
{ Console.WriteLine("Rectangle.Draw"); }
} (More...)

How do I convert a numeric type to a string?

  
Call Sytem.Object.ToString(). For example, if the variable count is an integer, write the following:
string text = count.ToString(); (More...)

Can I call a Win32 API function from a C# program?

  
Yes, you can.The .NET Framework provides a set of services called Platform Invoke, also known as PInvoke. Refer to the .NET Framework documentation for examples of using PInvoke services. (More...)

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