'无法在WPF XAML中创建'错误实例

I have a public class

我有一个公共课

public class FCabinetNames:List<string>

{
    BusinessLogic admintasks = new BusinessLogic();
    public FCabinetNames()
    {
        try
        {
            List<CabinetData> cab1 = admintasks.CabinetDataforGrid();
            foreach (var c1 in cab1)
            {
                this.Add(c1.CabinetName);
            }
        }
        catch
        {
        }
    }
}
public class