为什么datagrid不会在行中显示数据

Question

My datagrid doesn't show data in rows despite that I added data. Car is list of id of cars.

 DataGridTextColumn col1 = new DataGridTextColumn();
 myDataGrid.Columns.Add(col1);
 col1.Binding = new Binding("id");
 col1.Header = "ID";
 foreach (Car carr in car)
 {
     myDataGrid.Items.Add(carr.ToString());
 }

My xaml file

<DataGrid x:Name="myDataGrid" 
          HorizontalAlignment="Left" 
          Height="300" 
          Width="600"
          VerticalAlignment="Top" 
          IsReadOnly="True" 
          RenderTransformOrigin="0.52,0.47" 
          Margin="100,82,0,0" 
          FontSize="15" />

Answer 1

Set the ItemSource property of the DataGrid:

    myDataGrid.ItemSource = car;

See https://docs.microsoft.com/en-us/dotnet/api/system.windows.controls.datagrid?view=netframework-4.8

for more information.

OR You can use xaml for custom columns:

    <DataGrid x:Name="CARS" ItemsSource="{Binding Path=Car}" IsReadOnly="True" AutoGenerateColumns="False">
        <DataGrid.Columns>
            <DataGridTextColumn Header="ID" Binding="{Binding Path=IdPropertyOfCarObject}"></DataGridTextColumn>
        </DataGrid.Columns>
    </DataGrid>

And in code behind set the data context to the class that has a list of car objects.