c# - When exporting to xml file receiving error infinite loop -

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• why property set throw stackoverflow exception? 2 answers

i using c# on visual studio 2015 create program assignment. created class teacher information, each variable have getter , setter.

public class teacher {      public string teacherid     {         { return teacherid; }         set { teacherid = value; }     }      public string teachername     {         { return teachername; }         set { teachername = value; }     }      public string teacheraddress     {         { return teacheraddress; }         set { teacheraddress = value; }     }      public string teacherdob     {         { return teacherdob; }         set { teacherdob = value; }     }      public string teachercontact     {         { return teachercontact; }         set { teachercontact = value; }     }      public string teachersalary     {         { return teachersalary; }         set { teachersalary = value; }     }      public string class1     {         { return class1; }         set { class1 = value; }     }      public string class2     {         { return class2; }         set { class2 = value; }     }      public string class3     {         { return class3; }         set { class3 = value; }     }      public string class4     {         { return class4; }         set { class4 = value; }     }      public string class5     {         { return class5; }         set { class5 = value; }     } } 

i created class names savexml export data text boxes xml file.

public class savexml {     public static void savedata(object obj, string filename)     {         xmlserializer sr = new xmlserializer(obj.gettype());         textwriter writer = new streamwriter(filename);         sr.serialize(writer, obj);         writer.close();        }  } 

i created form text box every variable , set save button code below export information xml file.

        private void button1_click(object sender, eventargs e)     {         try         {             teacher teach = new teacher();             teach.teacherid = textbox1.text;             teach.teachername = textbox2.text;             teach.teacheraddress = textbox3.text;             teach.teacherdob = textbox4.text;             teach.teachercontact = textbox5.text;             teach.teachersalary = textbox6.text;             teach.class1 = textbox7.text;             teach.class2 = textbox8.text;             teach.class3 = textbox9.text;             teach.class4 = textbox10.text;             teach.class5 = textbox11.text;             savexml.savedata(teach, "teacher.xml");         }         catch (exception ex)         {             messagebox.show(ex.message);         }     } 

the program runs fine when input data , press save button program freezes , receive error below.

an unhandled exception of type 'system.stackoverflowexception' occurred in userregistration.exe 

i trying find issue till can't find problem, great. thanks

look @ property in class:

public string teacherid {     { return teacherid; }     set { teacherid = value; } } 

it references itself.

change to:

public string teacherid { get; set; } 

or:

private string teacherid; public string teacherid {     { return teacherid; }     set { teacherid= value; } }