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Unable to cast object of type 'System.DBNull' to type 'System.String`
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That won't work - the "accountNumber" is not a database value but a regular old Plain Old .NET "object" instance - you need to check against normal "null" value. The DBNull.Value would work for a SqlDataReader or a SqlParameter - but not for this object here.
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How do I add indices to MySQL tables?
... an ANALYZE TABLE helps.
In more complex queries, it decides not to use it based on extremely intelligent thought-out voodoo in the query-plan that for some reason just not fits your current requirements.
In the case of (2) or (3), you could coax MySQL into using the index by index hint sytax, but...
How do I restart a WPF application? [duplicate]
...d normal installer deployments, and some parts of them behaved differently based on whether or not ApplicationDeployment.IsNetworkDeployed was true. For example, if you are ClickOnce deployed within an organization, you might then be able to infer that you should have access to organization network ...
How to kill a process running on particular port in Linux?
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Based on this answer I created a function into ~/.bashrc: killp() { kill -9 $(lsof -t -i:"$1" -sTCP:LISTEN) } in order to be able to use it like this killp 3000. (Do not forget to add new lines for { })
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Gulp command not found after install
... this, open your terminal and run:
npm config get prefix
Step 2: Proceed, based on the output of that command:
Scenario One: npm's default directory is /usr/local
For most users, your output will show that npm's default directory is /usr/local, in which case you can skip to step 4 to update the pe...
What is fastest children() or find() in jQuery?
...r all nodes below this one in the DOM, i.e., choose the appropriate method based on the results you desire, not the speed of the method. If performance is truly an issue, then experiment to find the best solution and use that (or see some of the benchmarks in the other answers here).
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Trying to add adb to PATH variable OSX
...our bash_profile with the following commands: open ~/.bash_profile
In case base profile file doesn't exist, create a new one with the following command: touch .bash_profile then repeat phase 1.
Add the following line: export PATH=/Users/"YOURUSER"/Library/Android/sdk/platform-tools:$PATH
Restart you...
How do I update/upsert a document in Mongoose?
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See my answer based on this one if you need .upsert() to be available on all models. stackoverflow.com/a/50208331/1586406
– spondbob
May 7 '18 at 6:37
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Check if an element is present in an array [duplicate]
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@Francisc - Then you might try a map-based approach. Then your inArray() implementation could be as simple as return haystack[needle] != undefined;.
– aroth
Sep 11 '11 at 14:36
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Set up Heroku and GoDaddy? [closed]
... light on your situation.
If you're making the dns changes from a windows based pc you can flush your dns cache which can sometimes resolve your issue.
1.) Right Click on CMD.exe (aka command prompt)
2.) Click on Run as Administrator.
3.) type: ipconfig /flushdns
4.) Press Enter key
But bear in ...