void Search_Crit()
{
string sd = @"SELECT COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME= 'AcquiredBulkInfo'";
SqlConnection con = new SqlConnection("connection string");
con.Open();
SqlCommand cmd = new SqlCommand(sd, con);
SqlDataReader dr;
dr = cmd.ExecuteReader();
if (dr.HasRows)
{
while (dr.Read())
{
comboBox1.Items.Add(dr[0].ToString());
}
}
dr.Close();
con.Close();
}