CODEWITHSUNDEEP
vb.net
user3500553
user3500553

Reputation: 9

why Tostring doesnot convert int to string

Consider this code:

Dim a As Integer = 4
Dim c As Integer = 3
Console.WriteLine(a.ToString + c)
Console.ReadLine()

it should return 43 as a is being converted to string but still return 7

Upvotes: 1

Views: 53

Answers (1)

David Heffernan
David Heffernan

Reputation: 612993

Because you need to convert both operands to string, and/or use the string concatenation operator &.

As it stands, you are evaluating this expression:

"4" + 3

and VB decides to convert the first operand to be an integer to match the second operand. VB will only perform string concatenation with + if both operands are strings. It prefers arithmetic with +.

Some useful links:

As you can see from these links, the setting of Option Strict plays a role. You clearly have it set to Off but frankly setting it to On would be prudent.

Personally I'd write it like this

a.ToString & c.ToString

The bottom line is that if you know you want to concatenate strings, it is always clearer to use the dedicated string concatenation operator &.

Upvotes: 2

Related Questions