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Question?How add a database to my c# project? Pin
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QuestionPassing a Graphics object Pin
Member 95042020-Jun-09 11:39
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AnswerRe: Passing a Graphics object Pin
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GeneralRe: Passing a Graphics object Pin
Member 95042020-Jun-09 12:56
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GeneralRe: Passing a Graphics object Pin
Luc Pattyn20-Jun-09 13:14
sitebuilderLuc Pattyn20-Jun-09 13:14 
Hi,


Member 950420 wrote:
I understood the debugger to be telling me that the Graphics object was Null


The exception provides line information when available (normally so while debugging); and of course you have set your Visual Studio editor to always show line numbers (menu Tools/Options/TextEditor/AllLanguages:display line numbers), so you immediately can tell which line went wrong.



Member 950420 wrote:
Why is CreateGraphics() wrong?


CreateGraphics() creates a new, large, complex object, whereas the one in PaintEventArgs is already there. And the one you got from CreateGraphics() needs to be Dispose()d of, otherwise you will run into delayed memory collection situations; anyhow it will slow down your app in case you have frequent repaints (e.g. when animating something).


Member 950420 wrote:
how to do it pages on Google


Whatever you find on the Internet may or may not be correct; lots of examples are incorrect, i.e. they seem to function but contain fundamental flaws that will show under some circumstances. Read a serious book on the topic of interest, read some top-notch articles, and read the documentation, then judge everything you encounter for yourself.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

DISCLAIMER: this message may have been modified by others; it may no longer reflect what I intended, and may contain bad advice; use at your own risk and with extreme care.

AnswerRe: Passing a Graphics object Pin
Christian Graus20-Jun-09 12:29
protectorChristian Graus20-Jun-09 12:29 
AnswerRe: Passing a Graphics object Pin
Luc Pattyn20-Jun-09 12:29
sitebuilderLuc Pattyn20-Jun-09 12:29 
QuestionNeed a container like visual studio toolbox. Pin
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AnswerRe: Need a container like visual studio toolbox. Pin
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GeneralRe: Need a container like visual studio toolbox. Pin
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GeneralRe: Need a container like visual studio toolbox. Pin
Christian Graus20-Jun-09 13:48
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QuestionWindows Service Controlle in VS2008 Pin
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AnswerRe: Windows Service Controlle in VS2008 Pin
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QuestionWeb service problem - error when binding to datagrid [modified] Pin
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AnswerRe: Web service problem - error when binding to datagrid Pin
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QuestionHow do I check whether the "X" button in the top right corner was clicked? Pin
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AnswerRe: How do I check whether the "X" button in the top right corner was clicked? Pin
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AnswerRe: How do I check whether the "X" button in the top right corner was clicked? Pin
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