需要将我的枚举插入 C# 中的 combobox

Question

I need help with getting the information in my enum into a combobox.

Here is the code for my enum:

namespace Arsalan_Salam_991571527_A2
{
    public enum CarType
    {
        Odyssey,
        Rouge,
        Sienna,
        Accord
     }
 }

I have found some code that was suppose to work and I tried to implement into my code to make the information inside of enum appear as shown below:

   private void AddingEnumIntoComboBox(Car c)
    {
        foreach (var item in Enum.GetValues(typeof(CarType)))
        {
            carTypeInput.Items.Add(item);
        }
    }

But for some reason the program works fine but this code does not show the information of my enum into the combobox which is called carTypeInput. This is for a college assignment.

Here is the xaml that I used to create the UI interface:

<Page
x:Class="Arsalan_Salam_991571527_A2.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:Arsalan_Salam_991571527_A2"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid RenderTransformOrigin="0.497,0.522">
    <TextBlock HorizontalAlignment="Left" Margin="572,10,0,0" Text="DriveWell Inc." TextAlignment="Center" FontSize="50" VerticalAlignment="Top" Width="374" Height="72"/>
    <TextBlock HorizontalAlignment="Left" Margin="87,88,0,0" Text="Vin Number" TextAlignment="Center" FontSize="30" VerticalAlignment="Top" Width="192" Height="67" RenderTransformOrigin="0.457,-0.751"/>
    <TextBlock HorizontalAlignment="Left" Margin="67,185,0,0" Text="Car Make" TextAlignment="Center" FontSize="30" VerticalAlignment="Top" Width="194" Height="63"/>
    <TextBlock HorizontalAlignment="Left" Margin="87,282,0,0" Text="Car Type" TextAlignment="Center" FontSize="30" VerticalAlignment="Top" Width="183" Height="61"/>
    <TextBlock HorizontalAlignment="Left" Text="Purchase Price"  TextAlignment="Center" FontSize="30" VerticalAlignment="Top" Margin="87,380,0,0" Width="226" Height="61" RenderTransformOrigin="3.948,-0.233"/>
    <TextBlock HorizontalAlignment="Left" Margin="87,487,0,0" Text="Model Year" TextAlignment="Center" FontSize="30" VerticalAlignment="Top" Height="65" Width="190" RenderTransformOrigin="3.283,-2.555"/>
    <TextBlock HorizontalAlignment="Left" Margin="87,584,0,0" Text="Mileage (Km)" TextAlignment="Center" FontSize="30" VerticalAlignment="Top" Height="43" Width="192"/>
    <Button x:Name="addingCar" Click="addingCar_Click" Content="Add Car" FontSize="30" Margin="43,639,0,0" VerticalAlignment="Top" Height="56" Width="156"/>
    <Button x:Name="clearing" Click="clearing_Click" Content="Clear" FontSize="30" Margin="224,639,0,0" VerticalAlignment="Top" Height="56" Width="134"/>
    <Button x:Name="updatingCar" Click="updatingCar_Click" Content="Update" FontSize="30" Margin="379,639,0,0" VerticalAlignment="Top" Height="56" Width="130"/>
    <ComboBox x:Name="carTypeInput" Margin="348,282,0,0" Width="191" Height="57"/>
    <ComboBox x:Name="modelYearInput" Margin="348,483,0,0" Width="191" Height="52"/>
    <TextBox x:Name="vinNumberInput" HorizontalAlignment="Left" Margin="348,88,0,0" Text="" FontSize="25"  VerticalAlignment="Top" Height="40" Width="191" RenderTransformOrigin="0.476,-1.383"/>
    <TextBox x:Name="carMakeInput" HorizontalAlignment="Left" Margin="348,185,0,0" Text="" FontSize="25"  VerticalAlignment="Top" Height="40" Width="191"/>
    <TextBox x:Name="purchasePriceInput" HorizontalAlignment="Left" Margin="348,380,0,0" Text="" FontSize="25"  VerticalAlignment="Top" Height="52" Width="191"/>
    <TextBox x:Name="mileageInput" HorizontalAlignment="Left" Margin="348,584,0,0" Text="" FontSize="15"  VerticalAlignment="Top" Height="32" Width="191"/>
    <Image x:Name="carImageOutput" HorizontalAlignment="Left" Height="429" Margin="1013,106,0,0" VerticalAlignment="Top" Width="226"/>
    <TextBlock x:Name="errorMessageOutput" HorizontalAlignment="Left" Margin="572,624,0,0" Text="" FontSize="35" VerticalAlignment="Top" Width="641" Height="62"/>
    <ListView x:Name="lstCarDetailOutput" Margin="572,88,315,120"></ListView>

</Grid>
</Page>

Answer 1

jdweng pointed this out in their comment, but I'll expand on it and make it an answer:

The problem is that Enum.GetValues returns the values of an enum, which is a integral type (currently C# enums are more or less a fancy wrapper around a bunch of constant numbers). By default this is a int (more here ). Meaning your call to Enum.GetValues(typeof(CarType)) is returning int[] . Now there are multiple ways to get the name of an enum value, I'll demonstrate two.

1. Convert the int back to an enum value and call ToString

foreach (var item in Enum.GetValues(typeof(CarType))
{
    // This can be written as 'carTypeInput.Items.Add(((CarType) item).ToString());'
    var carType = (CarType) item;
    carTypeInput.Items.Add(carType.ToString());
}

2. Use Enum.GetName to avoid having to get an instance of CarType

foreach (var item in Enum.GetValue(typeof(CarType))
{
    // This can be written as 'carTypeInput.Items.Add(Enum.GetName(typeof(CarType), item));
    var carTypeName = Enum.GetName(typeof(CarType), item);
    carTypeInput.Items.Add(carTypeName);
}

Answer 2

Why not use Enum.GetNames?

private void Form1_Load(object sender, EventArgs e)
{
    comboBox1.Items.AddRange(Enum.GetNames(typeof(CarType)));
}

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    string carTypeName = comboBox1.SelectedItem.ToString();
    
    if(carTypeName == CarType.Accord.ToString())
    {
    ...
    }
}