Question

I have a C# method that I would like to use to update some data. The method could be passed either a string, a double, an integer

public void Update(string ac, string pr, string fld, Int32 intVal = null, double dblVal = null, string strVal = null)
{

Depending on the value of fld I would want to update a certain field name in my table.

Is there some way I could code up the function parameters so I would not have to supply a long list of possible value types?

Ideally I would like to be able to call this function like this:

Update("key1", "key2", "location", "London");
Update("key1" , "key2", "beds", 2);
Update("key1" , "key2", "price", 123.45);

Then inside the function update I would like to have:

public void Update(string ac, string pr, xxx, yyy)
    {
        try
        {
            vm.Product = _product.Get(ac, pr);
            vm.Product.xxx = yyy;
            _product.AddOrUpdate(vm.Product);
        }
        catch (Exception e) { log(e); }
    }

In the xxx I would like to give the field name and yyy the actual value. Maybe inside the function I could do some kind of casting with a case method based on the field name. I only have a small number of field names so that could be easy. Also maybe there is a way I could find the datatype from reflection of the vm class but that’s far beyond my knowledge.

Answer 1

EDIT

It looks like you want to pass in a property name, and a value. A little bit of reflection should make this easy:

public void Update(string ac, string pr, string propertyName, object Value) {
    try {
        vm.Product = _product.Get(ac, pr);
        vm.Product.GetType().GetProperty(propertyName).SetValue(vm.Product, value, null);
        _product.AddOrUpdate(vm.Product);
    }
}

END EDIT

A params array allow your method to accept a variable number of parameters

public void Update(string ac, string pr, params object[] arguments)

Which could be called with any of your examples above

Update("key1", "key2", "location", "London");
Update("key1" , "key2", "beds", 2);
Update("key1" , "key2", "price", 123.45);