CODEWITHSUNDEEP
xamarin.iosmonotouch.dialog
Louis Sherwood
Louis Sherwood

Reputation: 147

Monotouch.Dialog, trying to get EntryElement.ShouldReturn += () => {...}; to work

I want to add an event handler to the "go" button on the UIKeyboard that appears when entering into an EntryElement. Here is my code

EntryElement cPassword;
//
cPassword = new EntryElement (" ", "Password", "", true) {
    ReturnKeyType = UIReturnKeyType.Go
};
//
cPassword.ShouldReturn += () => { Login (); };

The Login method return void and performs a basic logging operation with the entry details provided by the user.

private void Login ()
{
    // Do login stuff
    //
}

But I think it requires a method of return type func as this is the error message I get when trying to use the current code:

Not all code paths return a value in anonymous method of type 'System.Func<bool>' 
(CS1643)

This is the first time I've come up against this type of thing, never seen func<> before :/ and hope that someone could point me in the right direction to using it correctly. Thanks!

Upvotes: 1

Views: 406

Answers (1)

Dimitris Tavlikos
Dimitris Tavlikos

Reputation: 8170

Your anonymous method should return a bool:

cPassword.ShouldReturn = () => {

    Login();
    return true;

};

Also note that since ShouldReturn is a property of a delegate type, the best practice is to assign the value, not add to it like you would do with events ("+=").

Upvotes: 2

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