将 Json 数据加载到 WPF

Question

I'm trying to load Json file into my wpf project but it's not working.. Can you help me please? I watched many videos and still didn't find the right solution

After ruining program is throwin an exception "Error converting value "{" to type 'Test.MyLibrary', Path", line 3, position 1

This is my Json file "test.json".

{
                    "Name" : "Apple",  

                    "ExpiryDate" : "May",

                    "Price" : 3.99

                    }

This is my class MyLibrary

 class MyLibrary
{


        public string Name { get; set; }
        public string ExpiryDate { get; set; }
        public double Price { get; set; }

}

My C# code

public MainWindow()
    {

        string path = "test.json";
        String myStream= File.ReadAllText(path);
        InitializeComponent();


        try

        {

            MyLibrary myLibrary= JsonConvert.DeserializeObject<MyLibrary>(myStream.ToString());

            DataContext = myLibrary;

        }

        catch (Exception ex)

        {


            MessageBox.Show(ex.Message);

        }

And now i want to show Name in WPF label

<Window x:Class="Test.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:Test"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800">
<Window.DataContext>
    <local:MyLibrary/>
</Window.DataContext>
<Grid>
    <StackPanel>
        <TextBox x:Name="firstLabel" Text="{Binding Path=Name}"></TextBox>
        <Label Content="{Binding Path=Price}"></Label>

    </StackPanel>

</Grid>

What i'm doing wrong ? Any ideas?

Answer 1

Do you have any error, exception? What is wrong? Also you didn't write which library you use for JSON serialization(I assume it is Newtonsoft.Json).

I tried your code but with one small change and works:

MyLibrary myLibrary = JsonConvert.DeserializeObject<MyLibrary>(@"{""Name"" : ""Apple"", ""ExpiryDate"" : ""May"", ""Price"" : 3.99}");