CODEWITHSUNDEEP
c#arraysstring
Anurag
Anurag

Reputation: 572

String array to string with an external parameter

I have a small question.

I have a string array and on the basis of a parameter I need to store the values of the array into a string.

string[] x={"A","B","C","D","F","G"};
for(int i=0;i<number;i++)
{
string y=y+","+x[i];
}

If number=3, then my string should have (A,B,C,D)

The above implementation throws an error that y cannot be used.

What should be the right kind of implementation to achieve the above functionality?

Any help will be greatly appreciated.

Regards

Anurag

Upvotes: 1

Views: 62

Answers (3)

Grant Winney
Grant Winney

Reputation: 66449

You could try a simple LINQ statement:

var partOfString = string.Join("", x.Take(number));

If you want to pass in 3, but get 4 records, just add 1:

var partOfString = string.Join("", x.Take(number + 1));

If the format you want is literally (A,B,C,D):

var partOfString = string.Format("({0})", string.Join(",", x.Take(number + 1)));

Upvotes: 4

nabuchodonossor
nabuchodonossor

Reputation: 2060

string y = String.Empty;
string[] x={"A","B","C","D","F","G"};

for(int i = 0; i < x.GetUpperBound(0); i++)
{
    y = y + "," + x[i];
}
y = y.TrimEnd(',');

And please use the StringBuilder Class for manipulating string.

Upvotes: 1

Ehsan
Ehsan

Reputation: 32681

Modified version of your code.

string[] x = { "A", "B", "C", "D", "F", "G" };

string result = string.Empty;
int number = 3;
for (int i = 0; i < number + 1; i++)
{
     result = result + "," + x[i];
}
result = result.TrimStart(',');

or simple LINQ

string[] x = { "A", "B", "C", "D", "F", "G" };
int number = 3;            
string result = string.Join(",", x.Take(number+1)); ;

Upvotes: 1

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