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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 7:57
mveDave Kreskowiak27-Jul-22 7:57 
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
swethamaddi27-Jul-22 0:15
swethamaddi27-Jul-22 0:15 
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 MacCutchan27-Jul-22 0:51
mveRichard MacCutchan27-Jul-22 0:51 
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 1:04
mveOriginalGriff27-Jul-22 1:04 
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 1:11
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QuestionHow to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 7:35
Code4Ever26-Jul-22 7:35 
GeneralRe: How to convert pdf file into FileStream? Pin
Richard MacCutchan26-Jul-22 7:49
mveRichard MacCutchan26-Jul-22 7:49 
GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 7:59
Code4Ever26-Jul-22 7:59 
I use Syncfusion PDF for loading pdf files in my WPF application. I use MVVM architecture in my project. I have the following property:


private int _selectedId;

        public int SelectedId
        {
            get { return _selectedId; }
            set
            {
                SetProperty(ref _selectedId, value);
                if (value != null)
                {
                    PdfSource = null;
                    string fileName = GetFileName(SelectedId);
                    if (fileName != null)
                    {
                        PdfReport(string.Format("{0}/{1}", "src/pdfs/", fileName));
                    }
                }
            }
        }


private Stream _pdfSource;

        public Stream PdfSource
        {
            get { return _pdfSource; }
            set { SetProperty(ref _pdfSource, value); }
        }


When I read file stream into this property, it can load the pdf and show it.
I don't know why there is a memory leak.

Is there any solution to this problem?
GeneralRe: How to convert pdf file into FileStream? Pin
Richard Deeming26-Jul-22 23:03
mveRichard Deeming26-Jul-22 23:03 
GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever28-Jul-22 20:52
Code4Ever28-Jul-22 20:52 
AnswerRe: How to convert pdf file into FileStream? Pin
Dave Kreskowiak26-Jul-22 8:24
mveDave Kreskowiak26-Jul-22 8:24 
GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 8:39
Code4Ever26-Jul-22 8:39 
GeneralRe: How to convert pdf file into FileStream? Pin
Dave Kreskowiak26-Jul-22 8:45
mveDave Kreskowiak26-Jul-22 8:45 
QuestionTechnic or best way to know if an application is "ready" when it is started from another application ? Pin
Maximilien25-Jul-22 2:14
Maximilien25-Jul-22 2:14 
AnswerRe: Technic or best way to know if an application is "ready" when it is started from another application ? Pin
Richard MacCutchan25-Jul-22 4:08
mveRichard MacCutchan25-Jul-22 4:08 
AnswerRe: Technic or best way to know if an application is "ready" when it is started from another application ? Pin
Gerry Schmitz27-Jul-22 7:43
mveGerry Schmitz27-Jul-22 7:43 
QuestionAsync web request Pin
moxol23-Jul-22 12:06
moxol23-Jul-22 12:06 
AnswerRe: Async web request Pin
Gerry Schmitz23-Jul-22 15:48
mveGerry Schmitz23-Jul-22 15:48 
QuestionPlease give me some explaination about the following Microsoft.ToolKit.MVVM Pin
Code4Ever23-Jul-22 8:17
Code4Ever23-Jul-22 8:17 
AnswerRe: Please give me some explaination about the following Microsoft.ToolKit.MVVM Pin
OriginalGriff23-Jul-22 10:18
mveOriginalGriff23-Jul-22 10:18 
QuestionClient and Server side validations for Calendar control Pin
Member 995054522-Jul-22 5:20
Member 995054522-Jul-22 5:20 
AnswerRe: Client and Server side validations for Calendar control Pin
Gerry Schmitz22-Jul-22 6:18
mveGerry Schmitz22-Jul-22 6:18 
QuestionI still didnt figure out how to upate a DGV without pressing enter Pin
grennday21-Jul-22 20:22
grennday21-Jul-22 20:22 
AnswerRe: I still didnt figure out how to upate a DGV without pressing enter Pin
Richard MacCutchan22-Jul-22 2:05
mveRichard MacCutchan22-Jul-22 2:05 
GeneralRe: I still didnt figure out how to upate a DGV without pressing enter Pin
grennday26-Jul-22 3:15
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