在asp.net中从web Api加载RadComboBoxItemData[]

[HttpGet("api/items")]
public IActionResult GetItems()
{
    var items = new List<RadComboBoxItemData>
    {
        new RadComboBoxItemData { Text = "Item 1", Value = "1" },
        new RadComboBoxItemData { Text = "Item 2", Value = "2" },
        // 更多项...
    };
    return Ok(items);
}

<telerik:RadComboBox ID="RadComboBox1" runat="server" DataSourceID="ItemsDataSource" DataTextField="Text" DataValueField="Value"></telerik:RadComboBox>
<asp:ObjectDataSource ID="ItemsDataSource" runat="server" SelectMethod="GetItems" TypeName="YourNamespace.YourApiController"></asp:ObjectDataSource>

public void ConfigureServices(IServiceCollection services)
{
    services.AddCors(options =>
    {
        options.AddPolicy("AllowAllOrigins",
            builder =>
            {
                builder.AllowAnyOrigin()
                       .AllowAnyHeader()
                       .AllowAnyMethod();
            });
    });

    services.AddControllers();
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    app.UseCors("AllowAllOrigins");

    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    app.UseRouting();

    app.UseAuthorization();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}

[EnableCors("AllowAllOrigins")]
[ApiController]
[Route("api/[controller]")]
public class YourController : ControllerBase
{
    // ...
}