asp.net mvc - The cast to value type 'System.Single' failed because the materialized value is null for stored procedure -


my stored procedure returns following data:

sensornodeuuid         type  val0   val1    val2 -------------------------------------------------- 88418344615647248       3   25.77   0       4.23 88418344615634456       3   null    null    null 88432552356623423       2   null    null    null 88418344584627440       3   24.77   0       4.29

i have model :

  public class editsensormodel      {         public list<editsensormodel> editsensor;          public int64 sensornodeuuid { get; set; }         public int type { get; set; }         public float val0 { get; set; }         public float val1 { get; set; }         public float val2 { get; set; } }

in controller:

list<editsensormodel> vendlist = new list<editsensormodel>();         var vnlist = entities.database.sqlquery<editsensormodel>("exec usp_getsensornode @userid",             new sqlparameter("@userid", convert.toint32(session["userid"]))      ).tolist();                      foreach (var item in vnlist)                     {                     editsensormodel temp = new editsensormodel();                     temp.sensornodeuuid = item.sensornodeuuid;                     temp.type = item.type;                     temp.val0 = item.val0 ;                     temp.val1 = item.val1 ;                     temp.val2 = item.val2 ;                     vendlist.add(temp);                     }

in controller, getting error storing data variable vnlist. error i'm facing is: cast value type 'system.single' failed because materialized value null. know how solve error

use float? in model.

float? val0; float? val1; float? val2;

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