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Questionweb control browser Pin
jigishaben25-Jan-17 2:37
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AnswerRe: web control browser Pin
OriginalGriff25-Jan-17 2:56
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QuestionMessage Closed Pin
25-Jan-17 1:18
professionalJackson Savitraz25-Jan-17 1:18 
AnswerRe: Fuzzy IndexOf using Bitap Algorithm Pin
OriginalGriff25-Jan-17 1:52
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QuestionAppending data to existing excel file using C# Pin
Member 1296649424-Jan-17 15:34
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AnswerRe: Appending data to existing excel file using C# Pin
Ralf Meier24-Jan-17 22:18
mveRalf Meier24-Jan-17 22:18 
AnswerRe: Appending data to existing excel file using C# Pin
Richard MacCutchan24-Jan-17 22:34
mveRichard MacCutchan24-Jan-17 22:34 
AnswerRe: Appending data to existing excel file using C# Pin
Patrice T25-Jan-17 10:55
mvePatrice T25-Jan-17 10:55 
C#
int lastRow_ = 3;

I fear you forgot to skip existing data before writing new data.
You need to detect existing data and write new data after existing data. you probably also want to not write headers again.

When you don't understand what your code is doing or why it does what it does, the answer is debugger.
Use the debugger to see what your code is doing. It allow you to execute lines 1 by 1 and to inspect variables as it execute, it is an incredible learning tool.

Debugger - Wikipedia, the free encyclopedia[^]
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]

The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.
Patrice

“Everything should be made as simple as possible, but no simpler.” Albert Einstein

QuestionAwait - Async not so simple to use? Pin
Richard Andrew x6424-Jan-17 12:24
professionalRichard Andrew x6424-Jan-17 12:24 
AnswerRe: Await - Async not so simple to use? Pin
Nathan Minier24-Jan-17 14:22
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GeneralRe: Await - Async not so simple to use? Pin
Richard Andrew x6425-Jan-17 1:41
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AnswerRe: Await - Async not so simple to use? Pin
Jon McKee24-Jan-17 17:53
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GeneralRe: Await - Async not so simple to use? Pin
Richard Andrew x6425-Jan-17 1:42
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SuggestionRe: Await - Async not so simple to use? Pin
Richard Deeming25-Jan-17 3:09
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GeneralRe: Await - Async not so simple to use? Pin
Jon McKee25-Jan-17 9:34
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GeneralRe: Await - Async not so simple to use? Pin
Richard Deeming25-Jan-17 10:23
mveRichard Deeming25-Jan-17 10:23 
GeneralRe: Await - Async not so simple to use? Pin
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AnswerRe: Await - Async not so simple to use? Pin
Graeme_Grant25-Jan-17 1:31
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AnswerRe: Await - Async not so simple to use? Pin
Richard Deeming25-Jan-17 3:12
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GeneralRe: Await - Async not so simple to use? Pin
Richard Andrew x6425-Jan-17 10:08
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QuestionDelegates Pin
Member 1202181724-Jan-17 2:13
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AnswerRe: Delegates Pin
Richard Deeming24-Jan-17 2:20
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AnswerRe: Delegates Pin
OriginalGriff24-Jan-17 2:26
mveOriginalGriff24-Jan-17 2:26 
QuestionPlz Send Me The Simpler Answer to connect with SSIS And SSRS Both In any Version fo the Excell Pin
Member 889223723-Jan-17 23:45
Member 889223723-Jan-17 23:45 
GeneralRe: Plz Send Me The Simpler Answer to connect with SSIS And SSRS Both In any Version fo the Excell Pin
Richard MacCutchan24-Jan-17 0:42
mveRichard MacCutchan24-Jan-17 0:42 

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