Currency Converter App WPF in C#.NET

This tutorial will teach how to make a Currency Converter in WPF C#.net.

MainWindow.xaml

<Window x:Class="WPFCurrencyConverter.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:WPFCurrencyConverter"
        mc:Ignorable="d"
        Title="Currency Converter App" Height="250" Width="400">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="25"/>
            <ColumnDefinition Width="350"/>
            <ColumnDefinition Width="25"/>
        </Grid.ColumnDefinitions>

        <Grid.RowDefinitions>
            <RowDefinition Height="25"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="5"/>
        </Grid.RowDefinitions>

        <StackPanel Grid.Column="1"
                    Grid.Row="1" Grid.ColumnSpan="2">

            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="100"/>
                    <ColumnDefinition Width="250"/>

                </Grid.ColumnDefinitions>

                <Grid.RowDefinitions>
                    <RowDefinition Height="25"/>
                    <RowDefinition Height="5"/>
                    <RowDefinition Height="25"/>
                    <RowDefinition Height="5"/>
                    <RowDefinition Height="25"/>
                    <RowDefinition Height="5"/>
                    <RowDefinition Height="25"/>
                    <RowDefinition Height="10"/>

                </Grid.RowDefinitions>

                <Label Content="Amount :"
                       Grid.Row="0"
                       Grid.Column="0"
                      
                       />

                <TextBox
                    x:Name="TextBoxAmount"
                    Grid.Row="0"
                    Grid.Column="1"
                    />

                <Label Content="From :" 
                       Grid.Row="2"
                       Grid.Column="0"
                       
                       />

                <ComboBox  Name="CboFrom" HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" Height="25"  Grid.Row="2"
                    Grid.Column="1">
                    <ComboBoxItem Content="USD"></ComboBoxItem>

                </ComboBox>

                <Label Content="To :"
                         Grid.Row="4"
                         Grid.Column="0"
                       />



                <ComboBox  Name="CboTo" HorizontalAlignment="Left" VerticalAlignment="Top"   
                           Width="100" Height="25"   Grid.Row="4" 
                           Grid.Column="1">
                    <ComboBoxItem Content="Srilankan Rupees"></ComboBoxItem>
                    <ComboBoxItem Content="Indian Rupees"></ComboBoxItem>  

                </ComboBox>


                <Label Content="Total :"
                         Grid.Row="6"
                         Grid.Column="0"
                       />

                <TextBox
                    x:Name="TextBoxTotal"
                    Grid.Row="6"
                    Grid.Column="1"
                    />

            </Grid>

            <StackPanel
                     Grid.Row="8"
                     Grid.ColumnSpan="2"
                     Orientation="Horizontal">

                <Button
                        Width="60"
                        Height="30"
                        Content="Convert"
                    
                        x:Name="ButtonConvert"
                        Margin="10 0 10 0"
                        Click="ButtonConvert_Click" Background="#FF04097E" Foreground="White"/>
            </StackPanel>

        </StackPanel>

    </Grid>
</Window>

MainWindow.xaml.cs

 public MainWindow()
        {
            InitializeComponent();
            ButtonConvert.Click += ButtonConvert_Click;
        }

        private void ButtonConvert_Click(object sender, RoutedEventArgs e)
        {

            double tot;
            double amount = double.Parse(TextBoxAmount.Text);



            if (((ComboBoxItem)CboFrom.SelectedItem).Content.ToString() == "USD" &&
                ((ComboBoxItem)CboTo.SelectedItem).Content.ToString() == "Srilankan Rupees")
            {
                tot = amount * 179.50;
                TextBoxTotal.Text = tot.ToString();

            }
            else if (((ComboBoxItem)CboFrom.SelectedItem).Content.ToString() == "USD" &&
                ((ComboBoxItem)CboTo.SelectedItem).Content.ToString() == "Indian Rupees")
            {
                tot = amount * 70;
                TextBoxTotal.Text = tot.ToString();
            }

        }