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QuestionIn C# can't introduce a formula in Excel Pin
Ismael_199927-Jul-22 12:37
Ismael_199927-Jul-22 12:37 
AnswerRe: In C# can't introduce a formula in Excel Pin
trønderen27-Jul-22 12:55
trønderen27-Jul-22 12:55 
AnswerRe: In C# can't introduce a formula in Excel Pin
Gerry Schmitz27-Jul-22 14:47
mveGerry Schmitz27-Jul-22 14:47 
GeneralRe: In C# can't introduce a formula in Excel Pin
Ismael_199928-Jul-22 7:53
Ismael_199928-Jul-22 7:53 
QuestionI having this error could anyone can help me :Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object at ValidParenthese.Solution.IsValid (System.String s) [0x00000] in <89120c6f256647e6a05011f274f6a Pin
swethamaddi26-Jul-22 23:20
swethamaddi26-Jul-22 23:20 
AnswerRe: I having this error could anyone can help me :Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object at ValidParenthese.Solution.IsValid (System.String s) [0x00000] in <89120c6f256647e6a05011f27 Pin
Richard MacCutchan26-Jul-22 23:51
mveRichard MacCutchan26-Jul-22 23:51 
AnswerRe: I having this error could anyone can help me :Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object at ValidParenthese.Solution.IsValid (System.String s) [0x00000] in <89120c6f256647e6a05011f27 Pin
Dave Kreskowiak27-Jul-22 6:57
mveDave Kreskowiak27-Jul-22 6:57 
QuestionWhat Is NullReferenceException? Object reference not set to an instance of an object i have error how to change code unable to excute below code could help me Pin
swethamaddi26-Jul-22 23:15
swethamaddi26-Jul-22 23:15 
using System;
using System.Collections.Generic;

namespace CalPoints {
    class Solution {
        public int CalPoints(string[] ops) {
           var opsList = new List<string>();
            var value = 0;

            foreach (var item in ops) {

                if (item.Equals("+")) {

                    var index = int.Parse(opsList[opsList.Count - 1]) + int.Parse(opsList[opsList.Count - 2]);
                    opsList.Add(index.ToString());

                    value = 0;

                    foreach (var val in opsList) {
                        value += int.Parse(val);
                    }

                } else if (item.Equals("D")) {

                    var index = int.Parse(opsList[opsList.Count - 1]) * 2;
                    opsList.Add(index.ToString());

                    value = 0;

                    foreach (var val in opsList) {
                        value += int.Parse(val);
                    }

                } else if (item.Equals("C")) {

                    opsList.RemoveAt(opsList.Count - 1);

                    value = 0;

                    foreach (var val in opsList) {
                        value += int.Parse(val);
                    }

                } else {
                    //An integer was added
                    opsList.Add(item);

                    foreach (var val in opsList) {
                        value += int.Parse(val);
                    }
                }

            }

            return value;
        }
    }

    class CalPoints {
        public static void Main(string[] args) {
            var solution = new Solution();
            var space = new char[] { ' ' };

            string[] ops = Console.ReadLine().Split(space);
            int output = solution.CalPoints(ops);
            Console.Write(output.ToString());
        }
    }

}

AnswerRe: What Is NullReferenceException? Object reference not set to an instance of an object i have error how to change code unable to excute below code could help me Pin
Richard MacCutchan26-Jul-22 23:51
mveRichard MacCutchan26-Jul-22 23:51 
AnswerRe: What Is NullReferenceException? Object reference not set to an instance of an object i have error how to change code unable to excute below code could help me Pin
OriginalGriff27-Jul-22 0:04
mveOriginalGriff27-Jul-22 0:04 
AnswerRe: What Is NullReferenceException? Object reference not set to an instance of an object i have error how to change code unable to excute below code could help me Pin
Calin Negru28-Jul-22 0:11
Calin Negru28-Jul-22 0:11 
QuestionHow to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 6:35
Code4Ever26-Jul-22 6:35 
GeneralRe: How to convert pdf file into FileStream? Pin
Richard MacCutchan26-Jul-22 6:49
mveRichard MacCutchan26-Jul-22 6:49 
GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 6:59
Code4Ever26-Jul-22 6:59 
GeneralRe: How to convert pdf file into FileStream? Pin
Richard Deeming26-Jul-22 22:03
mveRichard Deeming26-Jul-22 22:03 
GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever28-Jul-22 19:52
Code4Ever28-Jul-22 19:52 
AnswerRe: How to convert pdf file into FileStream? Pin
Dave Kreskowiak26-Jul-22 7:24
mveDave Kreskowiak26-Jul-22 7:24 
GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 7:39
Code4Ever26-Jul-22 7:39 
GeneralRe: How to convert pdf file into FileStream? Pin
Dave Kreskowiak26-Jul-22 7:45
mveDave Kreskowiak26-Jul-22 7:45 
QuestionTechnic or best way to know if an application is "ready" when it is started from another application ? Pin
Maximilien25-Jul-22 1:14
Maximilien25-Jul-22 1:14 
AnswerRe: Technic or best way to know if an application is "ready" when it is started from another application ? Pin
Richard MacCutchan25-Jul-22 3:08
mveRichard MacCutchan25-Jul-22 3:08 
AnswerRe: Technic or best way to know if an application is "ready" when it is started from another application ? Pin
Gerry Schmitz27-Jul-22 6:43
mveGerry Schmitz27-Jul-22 6:43 
QuestionAsync web request Pin
moxol23-Jul-22 11:06
moxol23-Jul-22 11:06 
AnswerRe: Async web request Pin
Gerry Schmitz23-Jul-22 14:48
mveGerry Schmitz23-Jul-22 14:48 
QuestionPlease give me some explaination about the following Microsoft.ToolKit.MVVM Pin
Code4Ever23-Jul-22 7:17
Code4Ever23-Jul-22 7:17 

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