How do I add a text description for my property?

My code :
private bool _SpaceKey;
public bool SpaceKey
{
get
{
return _SpaceKey;
}
set
{
_SpaceKey = value;
}
}
How do I add a text description for my property?

My code :
private bool _SpaceKey;
public bool SpaceKey
{
get
{
return _SpaceKey;
}
set
{
_SpaceKey = value;
}
}
In Asp.net Core c# coding, it is different. Its work of all asp.net core version.
[Display(Name = "Employee Name")]
public string EmployeeName { get; set; }