If / else conditions are the most useful conditions in a scripting language and you may want to use multiple times while writing script. If the first condition in If the statement fails then the second stage is
If we had a System.IO.PathTooLongException, the IOException would match but if we had an InsufficientMemoryException then nothing would catch it and it would propagate up the stack. Catch multiple types at once It's possible to catch multiple exception types with the same catch statement. P...
compare two strings in if-then-else statement Compare two text files in Powershell and if a name is found in both files output content from file 2 to a 3rd text file Compare-Object : Cannot bind argument to parameter 'ReferenceObject' because it is null. Comparing 2 software versions to ...
# Changes the color of the commands in the Console pane to red and then restores# it to its default value.$psISE.Options.ConsoleTokenColors["Command"] ='red'$psISE.Options.RestoreDefaultConsoleTokenColors() RestoreDefaults() 在Windows PowerShell ISE 2.0 及更高版本中受支持。
Ternary operator? <if-true> : <if-false> You can use the ternary operator as a replacement for theif-elsestatement in simple conditional cases. For more information, seeabout_If. Null-coalescing operator?? The null-coalescing operator??returns the value of its left-hand operand if it isn'...
There are times when this functionality is good; especially with things like part numbers where a value could fill multiple conditions (it has 5 digits so the color is red, the part number starts with the letterdmeaning it was manufacturer in Des Moines, etc.). At other times – like thi...
Unfortunately a side effect of this is that if an assembly load will fail, we won’t necessarily know when the program is first loaded, only when the code path that tries to load the assembly is run. It can also set up timing conditions for assembly load conflicts; if two parts of the...
If you then navigate to the Tables folder under a specific database you can use the following command to send the list of tables in that database, in descending order by the number of rows in the table, showing the largest (in rows) tables first, to another web page for your management...
In the following detailed comment example, we are figuring out if a mailbox is using the default database mailbox size limits, and we are taking multiple actions if it is True. Otherwise we launch into anElsestatement, which has different actions based on the value of the ma...
Now we can look for multiple processes in one go. Here we used the same cmdlet to dump out the process listing, and instead of being limited by the if statement, we built a more complicated set of conditions using the switch statement. We set up the first line of the switch on line ...