c# - Why it always shows the error index is out of array bounds? -

i'm crafting app in c#, here problem stopped me. database table has 7 columns , takes 7 while running application. in line singlerow[c] = data[0].tostring(); shows me error telling me index out of bounds of array. please suggest. code below.

public string[] rowonly() {     string[] singlerow = new string[] { };     conn = new oledbconnection(connstr);     conn.open();     cmd = new oledbcommand(query, conn);     data = cmd.executereader();     messagebox.show(data.hasrows.tostring());     int = data.fieldcount;     while (data.read())     {         (int c = 0; c < i; c++)         {             singlerow[c] = data[0].tostring();         }                                }     conn.close();     return singlerow;       } 

string[] singlerow = new string[] { }; 

is creating array of length 0

do this:

string[] singlerow = new string[i]; 

(you'll have move after line initializes i)

i.e:

int = data.fieldcount; string[] singlerow = new string[i]; 

tip: use {} when want initalize collection:

e.g. new string[]{"abc", "def"};