C# Accessing a methods value dynamically using a string

Question

I am currently setting some strings via this method:

string marketlabel = [email protected]();

I would like to set the market label dynamically by having a string for the actual market choice.

string currentMarketSelected= this.marketTextBox.Text; // Specific market: COLXPM

string marketlabel=allmarketdata.@return.markets.currentMarketSelected.label.ToString();

I have been searching for a few hours and probably am not explaining correctly. I tried some stuff with reflections with no success. Basically what I want to do is have a textbox or list which contains all the market names and based on which one is selected start setting the data.

Above is the best type of example of what I want to do even though it is not syntactically possible to use a variable in place.

public class Markets
{
    public COLXPM COLXPM { get; set; }
    //Lots of markets below here
}

public class COLXPM
{
    public string marketid { get; set; }
    public string label { get; set; }
    public string lasttradeprice { get; set; }
    public string volume { get; set; }
    public string lasttradetime { get; set; }
    public string primaryname { get; set; }
    public string primarycode { get; set; }
    public string secondaryname { get; set; }
    public string secondarycode { get; set; }
    public List<Recenttrade> recenttrades { get; set; }
    public List<Sellorder> sellorders { get; set; }
    public List<Buyorder> buyorders { get; set; }
}
public class Return
{
    public Markets markets { get; set; }
}

public class RootObject
{
    public int success { get; set; }
    public Return @return { get; set; }
}

The proposed solution below that worked

string currentMarketSelected = "DOGEBTC"; // Just selecting one of the markets to test it works
var property = [email protected]().GetProperty(currentMarketSelected);
dynamic market = property.GetMethod.Invoke([email protected], null);
string marketlabel = market.label.ToString(); //Gets all my selected market data

We can't help you without knowing what classes you're using. Those look totally unfamiliar. — Kendall Frey
– Kendall Frey, Commented Jan 26, 2014 at 0:54
All I want to do is replace one of the class names with a string variable. The Class name I want my code to use will change from time to time based on which UI element is selected. — juju
– juju, Commented Jan 26, 2014 at 1:10

Wagner DosAnjos · Accepted Answer · 2014-01-26 03:08:23Z

1

Here is a solution using reflection.

string currentMarketSelected= this.marketTextBox.Text; // Specific market: COLXPM

var property = [email protected]().GetProperty(currentMarketSelected);
dynamic market = property.GetGetMethod().Invoke([email protected], null);
string marketlabel=market.label.ToString();

edited Jan 26, 2014 at 3:08

answered Jan 26, 2014 at 1:34

Wagner DosAnjos

6,3841 gold badge18 silver badges30 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

juju Over a year ago

Just to test that it works I tried one of the other markets in the structure of data and it worked great. I had to move it over one from allmarketdata.@return to [email protected]

Wagner DosAnjos Over a year ago

I fixed the posted solution accordingly.

Umar F Khawaja · Accepted Answer · 2014-01-26 01:10:52Z

0

You need something like this:

public class Markets
{
    public COLXPM this[string key]
    {
        get
        {
            COLXPM colxpm;

            switch (key)
            {
                // TODO : use "key" to select instance of COLXPM;
                case "example1":
                    colxpm = ...;
                    break;

                default:
                    throw new NotSupportedException();
            }

            return colxpm;
        }
    }
}

Then you can do something like:

string [email protected][currentMarketSelected]label.ToString();

This is an indexed property.

answered Jan 26, 2014 at 1:10

Umar F Khawaja

3,9971 gold badge34 silver badges53 bronze badges

3 Comments

juju Over a year ago

I will give this a go and reply back as soon as I can test it out.

juju Over a year ago

I am sure this method works, only reason I avoided it was I would have to update about 92 definitions to include alot of the logic you added above.

Umar F Khawaja Over a year ago

I am glad you found a solution that works. Best of luck!

Collectives™ on Stack Overflow

C# Accessing a methods value dynamically using a string

2 Answers 2

2 Comments

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related