Performs a positional delete on the current query. Is better to avoid the positional updates and deletes. Is recommended to use the CommandText or PreparedQuery and ExecuteNonQuery to execute a "delete" query. Positional operations are sometimes dangerous to the data integrity.
Return value:
This function returns null.
Example
...
DataSet.CommadText="select * from my_table";
DataSet.ExecuteQuery();
...
//-----------------------------------------------------------------//
DataSet.Delete();
//-----------------------------------------------------------------//
// is equivalent with
var current_id= DataSet.FieldValues["id"].ToNumber();
DataSet.CommandText="delete from my_table where id=$current_id";
//-----------------------------------------------------------------//