查询语句如下
FEMlibDataContext fdc = new FEMlibDataContext();
public Material(int? ID)
{
var material = from buf in fdc.Material
where buf.MaterialID == ID
select new
{
buf.YoungsModulus,
};
YoungsModulus = (double)material.First().YoungsModulus;
}
public double? YoungsModulus { get; set; }