CODEWITHSUNDEEP
c#.net
Raj
Raj

Reputation: 837

data mismatch in array's C# when both are made equal

I declared an array like

string[] arr1;
string[] arr2;

In one point i assigend value for that 

arr1 = new string[] { "value1" , "Value2 };
arr2 = arr1;

After that again i am changing that value of arr1 like 

arr1[0]="value3";
arr1[1]="value4";

now if i check the arr2 these changes in arr1 also reflects.

arr2[0] value is "value3";
arr2[1] value is "value4";

how its happening ?

Upvotes: 0

Views: 71

Answers (2)

p.s.w.g
p.s.w.g

Reputation: 149050

Arrays are reference types in .NET. When you did arr2 = arr1 you made both variables point to the same array in memory. Any change to the elements of one will be directly reflected in the other.

To make a copy of an array, use the Array.Clone method:

arr2 = (string[])arr1.Clone();

or Linq's Enumerable.ToArray method:

arr2 = arr1.ToArray();

Upvotes: 6

KF2
KF2

Reputation: 10171

because arr2 is reference to arr1 so arr2 is point to arr1 in memory. every change to arr1 will reflect to arr2.

Upvotes: 1

Related Questions