绑定值：
@FooModel.Value
@code { private class Model { public string Value { get; set; } = "5,8"; } private Model FooModel { get; set; } = new Model(); private class Foo { public string Text { get; set; } = ""; public int Value { get; set; } public bool Checked { get; set; } } private IEnumerable Items2 { get; set; } = new List() { new Foo { Text = "Item 5", Value = 5, Checked = true }, new Foo { Text = "Item 6", Value = 6, Checked = false }, new Foo { Text = "Item 7", Value = 7, Checked = true }, new Foo { Text = "Item 8", Value = 8, Checked = false } }; }