Insert, else Update, Access DB

[Sl1ver]

i have a Access DB table there is only one row allowed so if no row exist it shouls create one else it should just update it. What should i put in the if statement?

if ()
            {
                int i = 1;
                string UpdateStr = "Insert into qx_Company " +
                                          "(AST__ID, AST__NAME, AST__STREET, AST__TOWN, AST__CITY, AST__TEL, AST__FAX, AST__MAIL, AST__SITE, AST__POST )" +
                                          "values(" +i.ToString()+ ",'"+ txtComp_Name.Text +"','"+ txtComp_Street.Text + "','"+ txtComp_Town.Text +"','"+ txtComp_City.Text +"','"+ txtComp_Tel.Text +"','"+ txtComp_Fax.Text + "','"+ txtComp_Email.Text +"','"+ txtComp_Website.Text +"',"+ txtComp_Box.Text +")";

            }else{
                string UpdateStr = "UPDATE qx_Company SET AST__NAME = '" + txtComp_Name.Text +"', " +
                               " AST__STREET = '" + txtComp_Street.Text + "', " +
                               " AST__TOWN = '" + txtComp_Town.Text + "', " +
                               " AST__CITY = '" + txtComp_City.Text + "', " +
                               " AST__TEL = '" + txtComp_Tel.Text + "', " +
                               " AST__FAX = '" + txtComp_Fax.Text + "', " +
                               " AST__MAIL = '" + txtComp_Email.Text + "', " +
                               " AST__SITE = '" + txtComp_Website.Text +"', " +
                               " AST__POST = '" + txtComp_Box.Text + "', " +

             }

[balame2004]

First you get no.of records from the table and use the count in the if condition.

Eg:

string Query= "select count(*) from qx_Company" 
SqlCommand cmd=new SqlCommand(---)
cmd.CommandText(Query);
int count=Convert.ToInt32(cmd.ExecuteScalar());
if(count=0)
{
  //Your insert code
}
else
{
  //Your update code
}