Question

I am selecting data from database and in while loop, i want it store all data in one variable. How to do that?
The variable selectAnswer is string array type .

I used this code but this give error. Modify this code.

string selectAnswer[] = new string[];
while (rdr.Read())
{
    selectAnswer[] = rdr[0].ToString();
}  

Answer 1

Your question is quite confusing.
You want to store the data into a single variable or into a single string?
If that’s the case why not use a StringBuilder instead.

StringBuilder answer = new StringBuilder();
while (rdr.Read())
{
    answer.AppendLine(rdr[0].ToString());
}

But I’m still not sure if I undestood correctly.

Other option is using a list:

IList<string> answer = new List<string>();
while (rdr.Read())
{
    answer.Add(rdr[0].ToString());
}
answer.ToArray();