c# - object crashing say it is NULL -

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• what nullreferenceexception, , how fix it? 29 answers

i've created class

public partial class subrank {     private system.datetime startdatefield;      public system.datetime startdate     {                 {             return this.startdatefield;         }         set         {             this.startdatefield = value;         }     } } 

im trying create array of this...

subrank[] pastsubrank = new subrank[1]; pastsubrank[0].startdate = datetime.parse("2012-05-22"); 

but pastsubrank[0] crashing saying null....why this?

yes cause haven't instantiated class subrank before accessing it's property.

subrank[] pastsubrank = new subrank[1]; pastsubrank[0] = new subrank(); pastsubrank[0].startdate = datetime.parse("2012-05-22");