c# - on DLL file
i beginner programmer, learning c#. keep getting stack overflow error on .dll when link main .cs in visual studio , start debugging. code .dll below:
// begin namespace libemployee1 namespace libemployee1 { /****************************************************************/ /* 1. class employee */ /****************************************************************/ public class employee { private const double fica_rate = 0.07; private const double fed_tax_rate = 0.22; private const double state_tax_rate = 0.05; private int id; private string lastname,firstname; private date hiredate; private double rate; private double hours; public employee() // default constructor { this.id = 0; this.lastname = ""; this.firstname = ""; this.hiredate = new date(); this.rate = 0.0; this.hours = 0.0; } public employee(int idvalue, string lastnamevalue, // initializing constructor string firstnamevalue, date hiredatevalue, double ratevalue, double hoursvalue) { this.id = idvalue; this.lastname = lastnamevalue; this.firstname = firstnamevalue; this.hiredate = new date(hiredatevalue); this.rate = ratevalue; this.hours = hoursvalue; } public employee(int idvalue, string lastnamevalue, // initializing constructor string firstnamevalue, int hireyearvalue, int hiremonthvalue, int hiredayvalue, double ratevalue, double hoursvalue) { this.id = idvalue; this.lastname = lastnamevalue; this.firstname = firstnamevalue; this.hiredate = new date(hireyearvalue,hiremonthvalue,hiredayvalue); this.rate = ratevalue; this.hours = hoursvalue; } public employee(int idvalue, string lastnamevalue, // initializing constructor string firstnamevalue, string hiredatestring, double ratevalue, double hoursvalue) { this.id = idvalue; this.lastname = lastnamevalue; this.firstname = firstnamevalue; this.hiredate = date.parse(hiredatestring); this.rate = ratevalue; this.hours = hoursvalue; } public employee(employee sourceemployee) // copy constructor { this.hiredate = new date(); this.copy(sourceemployee); } public int id // define read/write id property { { return this.id; } set { if ((value >= 1) && (value <= 9999)) this.id = value; else processerror(string.format("{0} can not assigned id property\n\nabort?", value)); } } public string lastname // define read/write lastname property { { return this.lastname; } set { this.lastname = value.trim(); } } public string firstname // define read/write firstname property { { return this.firstname; } set { this.firstname = value.trim(); } } public date hiredate // define read/write hiredate property { { return this.hiredate; } set { this.hiredate.copy(value); } } public double rate // define read/write rate property { { return this.rate; } set { if ((value >= 0) && (value <= 9999.0)) this.rate = value; else processerror(string.format("{0} can not assigned rate property\n\nabort?", value)); } } public double hours // define read/write hours property { { return this.hours; } set { if ((value >= 0) && (value <= 300.0)) this.hours = value; else processerror(string.format("{0} can not assigned hours property\n\nabort?", value)); } } public double earnings { { return math.round(this.rate * this.hours, 2); } } public double fica // define result property { { return math.round(this.earnings * .07, 2); } } public double fedtax // define result property { { return math.round(this.earnings * .22, 2); } } public double statetax // define result property { { return math.round(this.earnings * .05, 2); } } public double netpay // define result property { { return math.round(this.earnings - (this.fica + this.fedtax + this.statetax), 2); } } public string this[int propertyindex] // define readonly indexer property { { string returnvalue = ""; switch (propertyindex) { case 0: returnvalue = this.id.tostring("d4"); break; case 1: returnvalue = this.lastname; break; case 2: returnvalue = this.firstname; break; case 3: returnvalue = this.hiredate.tostring("mm/dd/yyyy"); break; case 4: returnvalue = this.earnings.tostring("f2"); break; case 5: returnvalue = this.fica.tostring("f2"); break; case 6: returnvalue = this.fedtax.tostring("f2"); break; case 7: returnvalue = this.statetax.tostring("f2"); break; case 8: returnvalue = this.netpay.tostring("f2"); break; default: processerror(string.format("{0} invalid " + "propertyindex value employee " + "class this[] indexer\n\nabort?", propertyindex)); break; } return returnvalue; } } public string this[string propertyname] // define readonly indexer property { { string returnvalue = ""; switch (propertyname.toupper()) { case "id" : returnvalue = this.id.tostring("d4"); break; case "lastname" : case "last name": returnvalue = this.lastname; break; case "firstname": returnvalue = this.firstname; break; case "hiredate" : returnvalue = this.hiredate.tostring("mm/dd/yyyy"); break; case "earnings" : returnvalue = this.earnings.tostring("f2"); break; case "fica" : returnvalue = this.fica.tostring("f2"); break; case "fedtax" : returnvalue = this.fedtax.tostring("f2"); break; case "statetax" : returnvalue = this.statetax.tostring("f2"); break; case "netpay" : returnvalue = this.netpay.tostring("f2"); break; default: processerror(string.format("{0} invalid " + "propertyname value student " + "class this[] indexer\n\nabort?", propertyname)); break; } return returnvalue; } } public void copy(employee sourceemployee) // copy method { this.id = sourceemployee.id; this.rate = sourceemployee.rate; this.lastname = sourceemployee.lastname; this.firstname = sourceemployee.firstname; this.hours = sourceemployee.hours; this.hiredate.copy(sourceemployee.hiredate); } public employee clone() { return new employee (this); } public int compareto(employee employee) { return this.id.compareto(employee.id); } public static int compareids(employee employee1, employee employee2) { return employee1.id.compareto(employee2.id); } public static int comparenames(employee employee1, employee employee2) { string string1 = employee1.lastname + employee1.firstname + employee1.id.tostring("d4"); string string2 = employee2.lastname + employee2.firstname + employee2.id.tostring("d4"); return string1.compareto(string2); } public static int comparehiredates(employee employee1, employee employee2) { string string1 = employee1.lastname + employee1.firstname + employee1.hiredate.tostring(""); string string2 = employee2.lastname + employee2.firstname + employee2.hiredate.tostring(""); return string1.compareto(string2); } public static int compareearnings(employee employee1, employee employee2) { string string1 = employee1.lastname + employee1.firstname + employee1.earnings.tostring(""); string string2 = employee2.lastname + employee2.firstname + employee2.earnings.tostring(""); return string1.compareto(string2); } public static employee parse(string stringvalue) { string[] words; employee employee = new employee(); stringvalue = stringmethods.spacedelimit(stringvalue); words = stringvalue.split(' '); employee.id = int32.parse(words[0]); employee.lastname = words[1]; employee.firstname = words[2]; employee.hiredate = date.parse(words[3]); employee.rate = double.parse(words[4]); employee.hours = double.parse(words[5]); return employee; } public override string tostring() { return string.format("{0:d4} {1,-15} {2,-15} {3,10:mm/dd/yyyy} {4,7:f} {5,7:f} {6,7:f} {7,7:f} {8,7:f} {9,7:f} {10,7:f}", this.id, this.lastname, this.firstname, this.hiredate, this.rate, this.hours, this.earnings, this.fica, this.fedtax, this.statetax, this.netpay); } private void processerror(string message) { dialogresult result; result = messagebox.show(message, "error", messageboxbuttons.yesno, messageboxicon.error, messageboxdefaultbutton.button1); if (result==dialogresult.yes) consoleapp.exit(); } } // end class employee /****************************************************************/ /* 2. class employeelist : ienumerable */ /****************************************************************/ public class employeelist : ienumerable { public delegate int comparedelegate(employee employee1, employee employee2); private int capacity; // data member private int count; // data member private employee[] items; // data member public employeelist() // default constructor { this.capacity = 1; this.count = 0; this.items = new employee[1]; } private employeelist(int capacityvalue) // initializing constructor { if (capacityvalue>=1) { this.capacity = capacityvalue; this.count = 0; this.items = new employee[capacityvalue]; } else processerror(string.format("{0} can not capacity of employeelist object\n\nabort?",capacityvalue)); } public employeelist(employeelist sourcelist) // copy constructor { this.copy(sourcelist); } public int count // define read-only count property { { return this.count; } } public employee this[int index] // define read/write this[] indexer property { { if ((index>=1) && (index<=count)) return this.items[index-1]; else { processerror(string.format("employeelist [] index must between 1 , {0}\n\nabort?",this.count)); return default(employee); } } set { if ((index >= 1) && (index <= this.count)) this.items[index - 1] = value; else processerror(string.format("employeelist [] set index must between 1 , {0}\n\nabort?", this.count)); } } public bool empty // return true (false) if list (not) empty { { return (this.count == 0); } } public ienumerator getenumerator() // ienumerable interface implementation: { // declaration of getenumerator() method, (int i=1; i<=this.count; i++) // needed give meaning "foreach" yield return this[i]; // control construct. } public void clear() // remove list elements { this.capacity = 1; this.count = 0; this.items = new employee[1]; } public void copy(employeelist sourcelist) // approach correct { this.clear(); foreach (employee employee in sourcelist) this.add(employee.clone()); } public employeelist clone() { return new employeelist(this); } private void increasecapacity() { employeelist templist; templist = new employeelist(2 * this.capacity); foreach (employee employee in this) templist.add(employee); this.capacity = templist.capacity; this.count = templist.count; this.items = templist.items; } public void add(employee employee) { this.insertat(this.count+1, employee); } public void insertat(int position, employee employee) { int i; if ((position >= 1) && (position <= this.count + 1)) { if (this.count == this.capacity) this.increasecapacity(); this.count++; (i = this.count; > position; i--) this[i] = this[i - 1]; this[position] = employee; } else processerror(string.format("employeelist insertat index must between 1 , {0}\n\nabort?", this.count + 1)); } public employee removeat(int position) { int i; employee employee = null; if ((position >= 1) && (position <= this.count)) { employee = this[position]; (i = position; < this.count; i++) this[i] = this[i + 1]; this.count--; } else processerror(string.format("employeelist removeat index must between 1 , {0}\n\nabort?", this.count)); return employee; } private void processerror(string message) { dialogresult result; result = messagebox.show(message, "error", messageboxbuttons.yesno, messageboxicon.error, messageboxdefaultbutton.button1); if (result == dialogresult.yes) consoleapp.exit(); } public void reverse() { int i; employee tempvalue; (i = 1; <= this.count / 2; i++) { tempvalue = this[i]; this[i] = this[this.count + 1 - i]; this[this.count + 1 - i] = tempvalue; } } public int locate(employee employee) // locate , return list index { // of data in list. int listindex = 1; while ((listindex <= this.count) && (this[listindex].compareto(employee) < 0)) listindex++; if (listindex > this.count) listindex = ~listindex; else if (this[listindex].compareto(employee) > 0) listindex = ~listindex; return listindex; } public int locate(employee employee, comparedelegate comparemethod) // locate , return list index { // of data in list. int listindex = 1; // uses comparedelegate method. while ((listindex <= this.count) && (comparemethod(this[listindex], employee) < 0)) listindex++; if (listindex > this.count) listindex = ~listindex; else if (comparemethod(this[listindex], employee) > 0) listindex = ~listindex; return listindex; } public void sort() // uses employee class compareto method { int i, j, k; employee temp; (i = 1; <= (this.count - 1); i++) { k = i; (j = (i + 1); j <= this.count; j++) if (this[j].compareto(this[k]) < 0) k = j; if (k > i) { temp = this[k]; this[k] = this[i]; this[i] = temp; } } } public void sort(comparedelegate comparemethod) // uses comparedelegate method. { int i, j, k; employee temp; (i = 1; <= (this.count - 1); i++) { k = i; (j = (i + 1); j <= this.count; j++) if (comparemethod(this[j], this[k]) < 0) k = j; if (k > i) { temp = this[k]; this[k] = this[i]; this[i] = temp; } } } public double total(string propertyname) { double total = 0.0; foreach (employee employee in this) total += double.parse(employee[propertyname]); return total; } public double mean(string propertyname) { return this.total(propertyname) / this.count; } public double max(string propertyname) { int i; double max = double.parse(this[1][propertyname]); (i = 2; <= this.count; i++) if (double.parse(this[i][propertyname]) > max) max = double.parse(this[i][propertyname]); return max; } public double min(string propertyname) { int i; double min = double.parse(this[1][propertyname]); (i = 2; <= this.count; i++) if (double.parse(this[i][propertyname]) < min) min = double.parse(this[i][propertyname]); return min; } public int assignid() { int returnvalue = 1; if (this.count>0) returnvalue = (int) this.max("id") + 1; return returnvalue; } public void input(streamreader filein) { string linein; while ((linein=filein.readline())!=null) this.add(employee.parse(linein)); } public void printreport(streamwriter fileout, string orderdescriptor) { int indent = (63 - orderdescriptor.length) / 2; orderdescriptor = "".padleft(indent) + orderdescriptor; fileout.writeline(" employee report "); fileout.writeline(orderdescriptor); fileout.writeline(" {0:mm/dd/yyyy}", date.today); fileout.writeline(); fileout.writeline(" jon ernst "); if (!this.empty) { fileout.writeline(" id last name first name hired earnings fica fed tax state tax net pay "); fileout.writeline("---- --------------- --------------- ---------- --------- --------- --------- --------- ---------"); foreach (employee employee in this) fileout.writeline("{0:d4} {1,-15} {2,-15} {3,10:mm/dd/yyyy} {4,7:f} {5,7:f} {6,7:f} {7,7:f} {8,7:f}", employee.id, employee.lastname, employee.firstname, employee.hiredate, employee.earnings, employee.fica, employee.fedtax, employee.statetax, employee.netpay); fileout.writeline(" --------- -------- --------- --------- ---------"); fileout.writeline("{0,-52} {1,7:f} {2,7:f} {3,7:f} {4,7:f} {5,7:f}", "mean", this.mean("earnings"), this.mean("fica"), this.mean("fed tax"), this.mean("state tax"), this.mean("net pay")); fileout.writeline("{0,-52} {1,7:f} {2,7:f} {3,7:f} {4,7:f} {5,7:f}", "maximum", this.max("earnings"), this.max("fica"), this.max("fed tax"), this.max("state tax"), this.max("net pay")); fileout.writeline("{0,-52} {1,7:f} {2,7:f} {3,7:f} {4,7:f} {5,7:f}", "minimum", this.min("earnings"), this.min("fica"), this.min("fed tax"), this.min("state tax"), this.min("net pay")); fileout.writeline(); fileout.writeline("count = {0}", this.count); } else fileout.writeline("the list empty."); fileout.writeline(); } } // end class employeelist } // end namespace libemployee1 visual studio pointing out stack overflow error @ method:
public date hiredate // define read/write hiredate property { { **<=== visual studio points overflow error line** return this.hiredate; } set { this.hiredate.copy(value); } }
you have answer right there in code, in hiredate property, you're returning value of hiredate property, in turn return value of hiredate property, , on..! want return value of backing field.
public datetime hiredate { { return this.hiredate; } set { this.hiredate = value; } }
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