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Unable to cast object of type 'System.DBNull' to type 'System.String`
I got the above error in my app. Here is the original code
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How to kill a process running on particular port in Linux?
I tried to close the tomcat using ./shutdown.sh from tomcat /bin directory. But found that the server was not closed properly. And thus I was unable to restart My tomcat is running on port 8080 .
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How to rename with prefix/suffix?
How do I do mv original.filename new.original.filename without retyping the original filename?
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Evenly distributing n points on a sphere
... 0.5)/num_pts, so that, say, if we want to sample 10 points they are r = 0.05, 0.15, 0.25, ... 0.95. We uniformly sample r to get equal-area spacing, and we use the sunflower increment to avoid awful “bars” of points in the output.
Now doing the sunflower on a sphere
The changes that we need to ...
How to clear the cache of nginx?
I use nginx to as the front server, I have modified the CSS files, but nginx is still serving the old ones.
22 Answers
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How do I detect if software keyboard is visible on Android Device or not?
... way in Android to detect if the software (a.k.a. "soft") keyboard is visible on screen?
30 Answers
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Android Studio: how to attach Android SDK sources?
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How to list the size of each file and directory and sort by descending size in Bash?
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node.js shell command execution
I am still trying to grasp the finer points of how I can run a linux or windows shell command and capture output within node.js; ultimately, I want to do something like this...
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Tools for Generating Mock Data? [closed]
I'm looking for recommendations of a good, free tool for generating sample data for the purpose of loading into test databases. By analogy, something that produces " lorem ipsum " text for any RDBMS. Features I'm looking for include:
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