CODEWITHSUNDEEP
mvvmwindows-8windows-store-appscaliburn.micro
Zach Johnson
Zach Johnson

Reputation: 123

Displaying MessageDialog using MVVM and Caliburn.Micro

I need to display a MessageDialog to the user if certain fields in the view are blank when they click a button to navigate. I can handle the input field validation from the view model just fine, I'm just not sure how to invoke a messagedialgo.showasync method from the view model and have it display on the view. Any suggestions?

Upvotes: 1

Views: 1007

Answers (1)

Farhan Ghumra
Farhan Ghumra

Reputation: 15296

I saw the sample and lib source of Caliburn.Micro. IWindowManager interface is only for WPF and Silverlight. For WinRT the sample contains this helper class.

using System;
using Windows.UI.Popups;

namespace Caliburn.Micro.WinRT.Sample.Results
{
    public class MessageDialogResult : ResultBase
    {
        private readonly string _content;
        private readonly string _title;

        public MessageDialogResult(string content, string title)
        {
            _content = content;
            _title = title;
        }

        public async override void Execute(ActionExecutionContext context)
        {
            var dialog = new MessageDialog(_content, _title);

            await dialog.ShowAsync();

            OnCompleted();
        }
    }
}

It can be called from viewmodel like this

new MessageDialogResult("content", "title");

See the code at CodePlex

CoroutineViewModel.cs

MessageDialogResult.cs

Upvotes: 1

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