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Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...in your serialPort1_DataReceived method is coming from another thread context than the UI thread, and that's the reason you see this error.
To remedy this, you will have to use a dispatcher as descibed in the MSDN article:
How to: Make Thread-Safe Calls to Windows Forms Controls
So instead of settin...
How do I set the offset for ScrollSpy in Bootstrap?
I have a site with the navbar fixed on top and 3 divs underneath in the main content area.
12 Answers
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Change IPython/Jupyter notebook working directory
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Architecture of a single-page JavaScript web application?
How should a complex single-page JS web application be structured on the client-side? Specifically I'm curious about how to cleanly structure the application in terms of its model objects, UI components, any controllers, and objects handling server persistence.
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R memory management / cannot allocate vector of size n Mb
I am running into issues trying to use large objects in R. For example:
8 Answers
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Simple (non-secure) hash function for JavaScript? [duplicate]
...passed a string as input, produces something similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have to be cryptographically secure, just reasonably resistant to collisions. (My initial use case is URLs, but I'll probably want to use it on other ...
How to retrieve Request Payload
I'm using PHP , ExtJS and ajax store .
2 Answers
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Get Folder Size from Windows Command Line
...recursively (the following is a batch file):
@echo off
set size=0
for /r %%x in (folder\*) do set /a size+=%%~zx
echo %size% Bytes
However, this has several problems because cmd is limited to 32-bit signed integer arithmetic. So it will get sizes above 2 GiB wrong1. Furthermore it will likely count...
Sending email with PHP from an SMTP server
...and password (and maybe the port if it is not the default one - 25).
For example, I usually use PHPMailer with similar settings to this ones:
$mail = new PHPMailer();
// Settings
$mail->IsSMTP();
$mail->CharSet = 'UTF-8';
$mail->Host = "mail.example.com"; // SMTP server example
$m...
How to generate a number of most distinctive colors in R?
...es from RColorBrewer package. Qualitative palettes are supposed to provide X most distinctive colours each. Of course, mixing them joins into one palette also similar colours, but that's the best I can get (74 colors).
library(RColorBrewer)
n <- 60
qual_col_pals = brewer.pal.info[brewer.pal.info...