Error System.NullReferenceException while assigning List<T> to a property C# -

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• what nullreferenceexception, , how fix it? 29 answers

this not don't know nullrefrenceexception. there uncertain situation getting error.

i'm trying assign values properties of classes.

here classes.

// these classes in emailprocess namspace public class actionedemailreport {     public message message { get; set; }     public string savetosentitems { get; set; } }  public class torecipient {     public emailobject.emailaddress emailaddress { get; set; } }  public class message {     public string subject { get; set; }     public body body { get; set; }     public list<torecipient> torecipients { get; set; } }  public class body {     public string contenttype { get; set; }     public string content { get; set; } }  // below class in emailobject namespace. namespace emailobject {    public class emailaddress    {       public string address { get; set; }    } } 

here code assign values properties of classes.

public void emailprocessing(string recepeint) {    actionedemailreport actionedreport = new actionedemailreport();    list<torecipient>torecipient = new list<torecipient>();    emailobject.emailaddress emailaddress= new emailobject.emailaddress();    emailaddress.address = recepeint;    torecipient.add(new torecipient() {    emailaddress=emailaddress });     // i'm getting error on below line.        actionedreport.message.torecipients = torecipient;    actionedreport.message.body.content = "hello";    actionedreport.message.body.contenttype = "text";    actionedreport.savetosentitems = "true";    actionedreport.message.subject = "demo email" } 

on line actionedreport.message.torecipients = torec; getting error

system.nullreferenceexception:object reference not set instance of object.

i have checked inputs , sure assigning value torecipient why getting error. driving me crazy.

the message property in actionedemailreport not being instantiated. need add constructor actionedemailreport , new message property. need same body property in message class too.