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GeneralRe: In C# can't introduce a formula in Excel Pin
Ismael_199928-Jul-22 7:53
MemberIsmael_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
Memberswethamaddi26-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
Memberswethamaddi26-Jul-22 23:15 
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 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 Cali28-Jul-22 0:11
MemberCalin Cali28-Jul-22 0:11 
That happens when you declare an object (you mention just the type and object name) and leave it there, and later try to use it. You need to also use the new keyword followed by the object type before you can use the object (sometype somename = new sometype() that sort of thing, I don`t remember the exact C# syntax)

modified 28-Jul-22 7:53am.

QuestionHow to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 6:35
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GeneralRe: How to convert pdf file into FileStream? Pin
Richard MacCutchan26-Jul-22 6:49
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GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 6:59
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GeneralRe: How to convert pdf file into FileStream? Pin
Richard Deeming26-Jul-22 22:03
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GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever28-Jul-22 19:52
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AnswerRe: How to convert pdf file into FileStream? Pin
Dave Kreskowiak26-Jul-22 7:24
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GeneralRe: How to convert pdf file into FileStream? Pin
Code4Ever26-Jul-22 7:39
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GeneralRe: How to convert pdf file into FileStream? Pin
Dave Kreskowiak26-Jul-22 7:45
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QuestionTechnic or best way to know if an application is "ready" when it is started from another application ? Pin
Maximilien25-Jul-22 1:14
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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
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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
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QuestionAsync web request Pin
moxol23-Jul-22 11:06
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AnswerRe: Async web request Pin
Gerry Schmitz23-Jul-22 14:48
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QuestionPlease give me some explaination about the following Microsoft.ToolKit.MVVM Pin
Code4Ever23-Jul-22 7:17
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AnswerRe: Please give me some explaination about the following Microsoft.ToolKit.MVVM Pin
OriginalGriff23-Jul-22 9:18
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QuestionClient and Server side validations for Calendar control Pin
Member 995054522-Jul-22 4:20
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AnswerRe: Client and Server side validations for Calendar control Pin
Gerry Schmitz22-Jul-22 5:18
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