C# wpf calculator -
i'm making calculator exception when try make calculation decimal number. there wrong with sum1 += double.parse(nument.text); i'm bit lost now:p
public partial class mainwindow : window { double sum1 = 0; double sum2 = 0; string dotsign = ""; bool plusbuttonclicked = false; bool subbuttonclicked = false; bool multbuttonclicked = false; bool divbuttonclicked = false; public mainwindow() { initializecomponent(); } private void numbervalidationtextbox(object sender, textcompositioneventargs e) { regex regex = new regex("[^0-9]+"); e.handled = regex.ismatch(e.text); } private void one_click(object sender, routedeventargs e) { nument.text += one.content; } private void two_click(object sender, routedeventargs e) { nument.text += two.content; } private void three_click(object sender, routedeventargs e) { nument.text += three.content; } private void four_click(object sender, routedeventargs e) { nument.text += four.content; } private void five_click(object sender, routedeventargs e) { nument.text += five.content; } private void six_click(object sender, routedeventargs e) { nument.text += six.content; } private void seven_click(object sender, routedeventargs e) { nument.text += seven.content; } private void eight_click(object sender, routedeventargs e) { nument.text += eight.content; } private void nine_click(object sender, routedeventargs e) { nument.text += nine.content; } private void zero_click(object sender, routedeventargs e) { nument.text += zero.content; } private void add_click(object sender, routedeventargs e) { sum1 += double.parse(nument.text); nument.clear(); plusbuttonclicked = true; subbuttonclicked = false; multbuttonclicked = false; divbuttonclicked = false; } private void sub_click(object sender, routedeventargs e) { sum1 += double.parse(nument.text); nument.clear(); plusbuttonclicked = false; subbuttonclicked = true; multbuttonclicked = false; divbuttonclicked = false; } private void mult_click(object sender, routedeventargs e) { sum1 += double.parse(nument.text); nument.clear(); plusbuttonclicked = false; subbuttonclicked = false; multbuttonclicked = true; divbuttonclicked = false; } private void div_click(object sender, routedeventargs e) { sum1 = convert.todouble(dotsign); sum1 += double.parse(nument.text); nument.clear(); plusbuttonclicked = false; subbuttonclicked = false; multbuttonclicked = false; divbuttonclicked = true; } public void deci_click(object sender, routedeventargs e) { double currentinput = nument.text.length; bool pointfound = false; /*for (int = 0; < currentinput.length; i++) { if (currentinput[i] == '.') pointfound = true; }*/ if (pointfound == false) nument.text += "."; } private void equal_click(object sender, routedeventargs e) { if (plusbuttonclicked == true) { sum2 = sum1 + double.parse(nument.text); result.text = sum2.tostring(); sum1 = 0; } if (subbuttonclicked == true) { sum2 = sum1 - double.parse(nument.text); result.text = sum2.tostring(); sum1 = 0; } if (multbuttonclicked == true) { sum2 = sum1 * double.parse(nument.text); result.text = sum2.tostring(); sum1 = 0; } if (divbuttonclicked == true) { sum2 = sum1 / double.parse(nument.text); result.text = sum2.tostring(); sum1 = 0; } nument.clear(); } private void clear_click(object sender, routedeventargs e) { nument.clear(); calculations.clear(); result.clear(); } private void change_click(object sender, routedeventargs e) { double signchange = nument.text.length; signchange = -signchange; nument.text = signchange.tostring(); } } }
only 3 possible exceptions double.parse(string), , since doesn't seem played parameter, you're getting formatexception. talking decimal numbers, i'm guessing comes down decimal , groups separators you're using. defaults, think can use '.' decimal separator , ',' or ' ' groups one.
you should consider using double.parse(string, numberstyle) define more precisely separators wish use in calculator.
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