CODEWITHSUNDEEP
c#androidxamarinmvvmcross
Adam Diament
Adam Diament

Reputation: 4840

Bind Click function with parameter

In MVVM Cross for Android in Xamarin Studio,

I can write this in my .axml file to bind a click function to a button:

local:MvxBind="Click SendMessage"

SendMessage is a public method on the MvxViewModel with the signature

public void SendMessage() 
{
//do stuff
}


However, I want to do something like like this,

local:MvxBind="Click SendMessage param1: foo, param2: bar"

which should call the method underneath with a signature like this,

public void SendMessage(T foo, T bar) 
{
//do stuff
}

where foo and bar might be the current selected item, or the object represented in a particular row of a table etc.

I can't see anywhere that points towards how to do this, and I am hoping that it is a native functionality! Can anyone help?

Upvotes: 3

Views: 172

Answers (3)

BrunoVT
BrunoVT

Reputation: 723

You can use an ICommand instead of a void to execute your code, here you can paas one parameter.

An other option is to bind the parameters you need to objects and access these objects in your code.

Upvotes: 1

Cheesebaron
Cheesebaron

Reputation: 24460

The binding engine allows you to use either ICommand instances or public void methods. The latter only works if you also install the NuGet package MethodBinding.

As for the amount of parameters supported, it boils down to a single argument, which should correspond to the ViewModel bound to the item in the ListView.

Upvotes: 1

M463
M463

Reputation: 2183

Being a bit illiteracy with the exact functionality in xamarin studio, I would like to suggest a general different approach:

How about letting the controls on your View set a class wide property SelectedItem when they're selected, that could then be accessed by the buttons method when it's clicked?

Upvotes: 0

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