Binding RadioButtons with Gender Property in WPF Using Value Converter

Many WPF developers face a common problem when working with RadioButtons . They try to bind RadioButtons with a Gender property, but the binding does not work as expected . Why does this happen? Because RadioButtons work with true/false values , but in real applications, Gender is stored as meaningful values like: Male Female So the big question is: How do we connect a true/false UI control with a Male/Female data value? Why RadioButton Binding Fails A RadioButton uses the IsChecked property, and this property accepts only: true false But your Gender property is usually: a string ( "Male" , "Female" ) or an enum So the UI value and the data value are different types . This mismatch is the root cause of the problem. The Solution: Value Converter WPF provides a powerful feature called a Value Converter . What is a Value Converter? A Value Converter converts one value type into another. In our case: Convert Gender (...
Post a Comment

Easy way of navigate using Prism in WPF

1.First.xaml



<UserControl x:Class="PrismMain.Views.First"

             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"

             xmlns:local="clr-namespace:PrismMain.Views"

             mc:Ignorable="d"

             xmlns:prism="http://prismlibrary.com/"

        prism:ViewModelLocator.AutoWireViewModel="True">

    <StackPanel>

          <Button Content="Navigate To Second" Margin="5"  Command="{Binding NavigateCommand}" Width="150"/>

    </StackPanel>



</UserControl>


First.xaml.cs

public partial class First: UserControl

    {

        public First(FirstViewModel viewModel)

        {

            InitializeComponent();

            DataContext = viewModel;

        }



    }
FirstViewModel

 

  class FirstViewModel

    {

        public FirstViewModel(IRegionManager iregionManager)

        {
             NavigateCommand = new DelegateCommand(Nevigate);

            IregionManager = iregionManager;

        }



        private void Nevigate()

        {

            IregionManager.RequestNavigate("MainContent", "Second");

        }


        public ICommand NavigateCommand { get; }

        public IRegionManager IregionManager { get; }


    }

2.Second.xaml

 

<UserControl x:Class="PrismMain.Views.Second"

             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"

             xmlns:local="clr-namespace:PrismMain.Views"

             mc:Ignorable="d"

             xmlns:prism="http://prismlibrary.com/"

        prism:ViewModelLocator.AutoWireViewModel="True">

    <StackPanel>

          <Button Content="Navigate To First" Margin="5"  Command="{Binding NavigateCommand}" Width="150"/>

    </StackPanel>



</UserControl>

Second.xaml.cs

public partial class Second: UserControl

    {

        public First(SecondViewModel viewModel)

        {

            InitializeComponent();

            DataContext = viewModel;

        }



    }


SecondViewModel

 

  class SecondViewModel

    {

        public SecondViewModel(IRegionManager iregionManager)

        {

            

            NavigateCommand = new DelegateCommand(Nevigate);

            IregionManager = iregionManager;

        }



        private void Nevigate()

        {

            IregionManager.RequestNavigate("MainContent", "First");

        }



       

        public ICommand NavigateCommand { get; }

        public IRegionManager IregionManager { get; }



    }

To navigate between these Views we need to register these views, for this we need to Implement IModule interface.

Here's how you can implement it:



 class MainModule : IModule

    {

        public void OnInitialized(IContainerProvider containerProvider)

        {

            var region = containerProvider.Resolve<IRegionManager>();

            region.RegisterViewWithRegion("MainContent", typeof(Main));

          //here i register the MainContent region of Main.xaml

        }



        public void RegisterTypes(IContainerRegistry containerRegistry)

        {

      

            containerRegistry.RegisterForNavigation<First>();

            containerRegistry.RegisterForNavigation<Second>();

          

        }



    }

Here MainContent is region name which is present in Main.xaml where these views are navigated.


Main.xaml

    

<metro:MetroWindow x:Class="PrismMain.Views.Main"



        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"



        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"



        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"



        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"



        xmlns:local="clr-namespace:PrismMain.Views"



        mc:Ignorable="d"



        xmlns:prism="http://prismlibrary.com/"



        xmlns:metro="http://metro.mahapps.com/winfx/xaml/controls" >



<Grid>



     <ContentControl prism:RegionManager.RegionName="MainContent" />



 </Grid>

</metro:MetroWindow>

Now time to configure Module to do this we need to override ConfigureModuleCatalog method inside App.xaml.cs

App.xaml.cs






 public partial class App



    {



     



        protected override Window CreateShell()



        {



            var shell = Container.Resolve<Main>();//where Main is a window to display on start up which present in view folder



            return shell;



        }



       



        protected override void RegisterTypes(IContainerRegistry containerRegistry)



        {



            



            



        }



        protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog)



        {



            base.ConfigureModuleCatalog(moduleCatalog);



            moduleCatalog.AddModule<MainModule>();



        }



    }



Comments

Post a Comment

Popular posts from this blog

Filter DataGrid and ListView in wpf using ICollectionView

Image
EmployeeDetails.xaml <UserControl x:Class="PrismMain.Views.EmployeeDetails"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"         xmlns:local="clr-namespace:PrismMain.Views"         mc:Ignorable="d"        >     <Grid HorizontalAlignment="Stretch" VerticalAlignment="Top" Margin="0,50,0,0">         <Grid.RowDefinitions>             <RowDefinition Height="50"/>             <RowDefinition Height="*"/>             <RowDefinition Height="*"/> ...
Read more

Pagination of DataGrid in WPF using MVVM

Image
In this Post i will explain the pagination using the MVVM pattern. Lets first create the View with DataGrid and pagination control with First, Previous, Next and Last buttons and we will also have the number of record per page to be displayed in DataGrid option which is ComboBox and in this DataGrid i will load data from CSV file. View I will create the view with DataGrid like this And in this DataGrid i will load data from CSV file <Window x:Class="CURD.Views.EmployeeDetails"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"         xmlns:local="clr-namespace:CURD.Views"         mc:Ignorable="d"         Title="E...
Read more

How to Create TabControl using Prism Region

Image
MainWindow <metro:MetroWindow x:Class="PrismDemo.Views.MainWindow"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"         xmlns:local="clr-namespace:PrismDemo.Views"         mc:Ignorable="d" xmlns:prism="http://prismlibrary.com/"         Title="MetroPrismDemo"         xmlns:metro="http://metro.mahapps.com/winfx/xaml/controls">     <Grid>         <TabControl Margin="5" prism:RegionManager.RegionName =" TabRegion "                   VerticalAlignment="Stretch" HorizontalAlignment="Left" Bord...
Read more