windows-phone-7 – Page 5

How can I data bind a list of strings to a ListBox in WPF/WP7?

February 9, 2023 by Tarik

If simply put that your ItemsSource is bound like this: YourListBox.ItemsSource = new List<String> { “One”, “Two”, “Three” }; Your XAML should look like: <ListBox Margin=”20″ Name=”YourListBox”> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation=”Horizontal”> <TextBlock Text=”{Binding}” /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> Update: This is a solution when using a DataContext. Following code is the viewmodel you will be … Read more

TextBox.TextChanged event firing twice on Windows Phone 7 emulator

January 19, 2023 by Tarik

The reason the TextChanged event fires twice in WP7 is a side effect of how the TextBox has been templated for the Metro look. If you edit the TextBox template in Blend you will see that it contains a secondary TextBox for the disabled/read-only state. This causes, as a side effect, the event to fire … Read more

How to post data using HttpClient?

January 4, 2023 by Tarik

You need to use: await client.PostAsync(uri, content); Something like that: var comment = “hello world”; var questionId = 1; var formContent = new FormUrlEncodedContent(new[] { new KeyValuePair<string, string>(“comment”, comment), new KeyValuePair<string, string>(“questionId”, questionId) }); var myHttpClient = new HttpClient(); var response = await myHttpClient.PostAsync(uri.ToString(), formContent); And if you need to get the response after post, … Read more

Add custom header in HttpWebRequest

January 3, 2023 by Tarik

You use the Headers property with a string index: request.Headers[“X-My-Custom-Header”] = “the-value”; According to MSDN, this has been available since: Universal Windows Platform 4.5 .NET Framework 1.1 Portable Class Library Silverlight 2.0 Windows Phone Silverlight 7.0 Windows Phone 8.1 https://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.headers(v=vs.110).aspx

Developing cross platform mobile application [closed]

December 29, 2022 by Tarik

My answer here covers some of the technical limitations of cross-platfrom tools but let me expand a bit: I think that cross-platform tools have historically always been also-rans because such tools have the wrong philosophical focus. All the selling points for cross-plaform tools are the benefits they bring to developers. They are sold on the … Read more

How to trigger event when a variable’s value is changed?

December 22, 2022 by Tarik

Seems to me like you want to create a property. public int MyProperty { get { return _myProperty; } set { _myProperty = value; if (_myProperty == 1) { // DO SOMETHING HERE } } } private int _myProperty; This allows you to run some code any time the property value changes. You could raise … Read more

Calculating Distance between two Latitude and Longitude GeoCoordinates

November 27, 2022 by Tarik

The GeoCoordinate class (.NET Framework 4 and higher) already has GetDistanceTo method. var sCoord = new GeoCoordinate(sLatitude, sLongitude); var eCoord = new GeoCoordinate(eLatitude, eLongitude); return sCoord.GetDistanceTo(eCoord); The distance is in meters. You need to reference System.Device.

How to hash a password

November 16, 2022 by Tarik

Most of the other answers here are somewhat outdated considering today’s best practices. The most robust password-hashing algorithm that’s natively available in .NET is PBKDF2, represented by the Rfc2898DeriveBytes class. The following code is in a stand-alone class in this post: Another example of how to store a salted password hash. The basics are really … Read more

Getting Started with Windows Phone 7 [closed]

November 12, 2022 by Tarik

Windows Phone 7 Jumpstart Training Training (Video and PDF) includes: An Introduction to the Windows Phone Platform Game Building on the Windows Phone Platform Advanced Windows Phone Development Selling Your Windows Phone Solutions & Wrap Up