Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related Hot Network Questions. The App class constructor instantiates MainPage. LoadFromXaml initializes all the objects defined in the XAML file, connects them all together in parent-child relationships, attaches event handlers defined in code to events set in the XAML file, and sets the resultant tree of objects as the content of the page.
When you compile and run this program, the Label element appears in the center of the page as the XAML suggests:. Give the page a name, for example, HelloXamlPage :. Two files are added to the project, HelloXamlPage. Edit the HelloXamlPage. Content :. The ContentPage.
Content tags are part of the unique syntax of XAML. At first, they might appear to be invalid XML, but they are legal.
The period is not a special character in XML. Content tags are called property element tags. Content is a property of ContentPage , and is generally set to a single view or a layout with child views. Normally properties become attributes in XAML, but it would be hard to set a Content attribute to a complex object. For that reason, the property is expressed as an XML element consisting of the class name and the property name separated by a period. Now the Content property can be set between the ContentPage.
Content tags, like this:. Many shortcuts exist to set the values of these properties. Some properties are basic data types: For example, the Title and Text properties are of type String , Rotation is of type Double , and IsVisible which is true by default and is set here only for illustration is of type Boolean. For a property of any enumeration type, all you need to supply is a member name. For properties of more complex types, however, converters are used for parsing the XAML.
These are classes in Xamarin. Forms that derive from TypeConverter. Many are public classes but some are not. For this particular XAML file, several of these classes play a role behind the scenes:. The ThicknessTypeConverter can handle one, two, or four numbers separated by commas.
If one number is supplied, it applies to all four sides. With two numbers, the first is left and right padding, and the second is top and bottom. Four numbers are in the order left, top, right, and bottom. The LayoutOptionsConverter can convert the names of public static fields of the LayoutOptions structure to values of type LayoutOptions. The ColorTypeConverter accepts the names of public static fields of the Color structure or hexadecimal RGB values, with or without an alpha channel, preceded by a number sign.
In these cases, the digit is repeated to form the value. We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place. Click HERE to participate the survey. It is a WPF application. I can open the project just fine, I can even build and run it. Whenever I attempt to open a. This had been working fine for a few weeks, then last Friday something happened to cause it to stop working. Yesterday, I tried uninstalling and re-installing again. After re-installing I started up my application and was able to load my. I realized I had not installed Update 4. After installing the update I could not view my.
I tried all of your devenv. I ran vscollect and uploaded to skydrive. In order to check whether the issue only occurred within the specific project, could you please restart your PC, run VS as Admin, create a new and simple WPF app and then open the. You said that you can load. Two other people have sent me WPF projects.
One project I can load the xaml and the other I cannot. I checked your vslog and did not find errors. Based on your description, it seems that the issue only occurred with a specific project. In this case, I doubt the project is corrupted during being sent to you. Please create a new project and files in VS on your machine and copy the contents in files of the old problematic project into the new project or create a new project completely. Another team member sent me an earlier version of the project that had some test code in it and I can load the xaml just fine.
Displays or hides artboard elements. Appears as a symbol of an eye when shown. Locks or unlocks artboard elements. Locked elements can't be modified. Appears as a padlock symbol when locked. Scoping up is applicable only when you're in the scope of a style or template. The Properties window enables you to set property values on controls. Here's what it looks like:. To the right of each property value is a property marker that appears as a box symbol.
The appearance of the property marker indicates whether there's a data binding or a resource applied to the property. For example, a white box symbol indicates a default value, a black box symbol typically indicates that a local resource has been applied, and an orange box typically indicates a data binding has been applied.
When you click the property marker, you can navigate to the definition of a style, open the data binding builder, or open the resource picker. For more information about using properties and handling events, see Intro to controls and patterns. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode.
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