In this post we will see how we can pass the parameters using Custom Markup Extensions . Now that we have a understanding of how Custom Markup Extensions work in Silverlight lets quickly get into the code . I modify my class FirstCME as shown as below : public class FirstCME : IMarkupExtension<string> { public object value1 { get; set; }
public object value2 { get; set; }
public string ProvideValue(IServiceProvider serviceProvider) { double _val1 = Convert.ToDouble(value1); double _val2 = Convert.ToDouble(value2);
return (_val1 + _val2).ToString(); } } Go ahead and modify the xaml to pass the value to the parameters . It would look like below : <UserControl x:Class="SLCustomMarkup.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:SLCustomMarkup" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White"> <TextBlock Text="{local:FirstCME value1=10,value2=20}"></TextBlock> </Grid> </UserControl> Lets give it a run and see the output : The above xaml code could be modified as shown below : It would still work the same way . Here we pass the parameters in a Angular Bracket < > Format . Lets now give it a run : In the next post on Custom Markup Extensions we will see what are the advantages of Custom Markup Extensions . Thanks . Happy Coding.
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