Interface Method 1 to keep and 1 to override...
Hello, I have a data connection wrapper I'm building to allow programs to act as the data source for another.
Here is the issue. I have an interface, "IDataEngine", and in it, it has 2 methods. (more, but it only needs 2 for this example of it)
The Methods are,
public DataSet QuerySet(string sql); // inheriting classes should need to override this;
public DataTable QueryTable(string sql) // inheriting classes should not need to override this.
{
// does error checking but is essentially,
return QuerySet(sql).Tables[0];
}
Clearly, I do not need EVERY inheriting app to rewrite the same code for QueryTable, since it will be the same EVERY time.
But so far, every time I tell a class to implement the IDataEngine interface, it overrides the methods that have code as well as the ones without.
How do I change this, so overriding classes do not need to rewrite methods that are already functional on an interface? Thanks.
Here is the issue. I have an interface, "IDataEngine", and in it, it has 2 methods. (more, but it only needs 2 for this example of it)
The Methods are,
public DataSet QuerySet(string sql); // inheriting classes should need to override this;
public DataTable QueryTable(string sql) // inheriting classes should not need to override this.
{
// does error checking but is essentially,
return QuerySet(sql).Tables[0];
}
Clearly, I do not need EVERY inheriting app to rewrite the same code for QueryTable, since it will be the same EVERY time.
But so far, every time I tell a class to implement the IDataEngine interface, it overrides the methods that have code as well as the ones without.
How do I change this, so overriding classes do not need to rewrite methods that are already functional on an interface? Thanks.
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And I'm also finding validation on this as well.
ASKER
Despite that, I'm sure I've seen this done with an interface, but its dificult finding this kind of information by searching.
Anyone know if this can be done with an interface? (without producing static methods that the overiding methods can call?)