My end goal is to expose the Text value of a TextBox that I have in a UserControl, from the UserControl's call in XAML.
<my:UserControl SetCustomText="Blah blah this is variable"> would render the UserControl with that TextBox's text filed in.
I've been working at it using various examples but I always end up with "The Property SetCustomText was not found in type UserControl"
Example of how you can do this:
<UserControl x:Class="Test.UserControls.MyUserControl1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" Name="control"> <Grid> <!-- Text is being bound to outward representative property --> <TextBox Text="{Binding MyTextProperty, ElementName=control}"/> </Grid> </UserControl> public partial class MyUserControl1 : UserControl { // The dependency property which will be accessible on the UserControl public static readonly DependencyProperty MyTextPropertyProperty = DependencyProperty.Register("MyTextProperty", typeof(string), typeof(MyUserControl1), new UIPropertyMetadata(String.Empty)); public string MyTextProperty { get { return (string)GetValue(MyTextPropertyProperty); } set { SetValue(MyTextPropertyProperty, value); } } public MyUserControl1() { InitializeComponent(); } } <uc:MyUserControl1 MyTextProperty="Text goes here"/> 
