How to clear array in c#?

Question

string[] text;

 

if (ds.Tables[0].Rows[0][i].ToString().ToUpper().Trim().Contains("NUMBER :"))
{
s01 = ds.Tables[s].Rows[0][i].ToString().Trim();
SpirNoSplt1 = s01.Split(':');
i = ds.Tables[0].Columns.Count;
}

i have use array and split and stored in array.now the loop is excute array is not cleared old value is hold in array.

i have use below code

text.clear()

but error occur

How to clear array ?