StreamWriter is used to write characters to a stream in a specific encoding. I believe that it is better to use the class StreamWriter to append or write text to a specific file and control the writer class later. Path and a boolean true Using true here simply tells the class that it will be used to APPEND characters to a file that the class may create or already exists.
The coloring uses good old traffic light colors to show the progression in groups of three. I have also changed the color in the text displayed on the console to make it clearer to see against the background colors.
OK, that was fun… Now, let us dig a bit deeper. In Windows PowerShell, the host is what you, as a user, interact with. You will typically interact with the two default hosts: When you use Write-Host, you are telling Windows PowerShell to simply display something in the host to the user. In these cases, an example is coming upwhat Write-Host prints out is basically lost.
In other words, if you are not watching your script when it actually is running, Write-Host is not doing a whole lot for you. You can see this by looking over the following image.
In the previous image, I have used several commands. In fact, it is working fine, and just doing what it is told. In the second command, things work as one might expect. The objects are passed along the pipeline so Where-Object actually works in this case, and it is able to filter the objects properly because Write-Output was used instead.
The above image also shows the output from a third and fourth command. They are included to show how Write-Output is basically always there without having to be explicitly added.
Windows PowerShell does a lot of things behind the scenes for you, and this is just one example of this. Another simple example to show the contract between the two cmdlets is to show an example that uses output redirection. Consider the following code snippet.This is Day 3, "Storing Information with Variables," from Sams Teach Yourself C# in 21 timberdesignmag.com information about the book appears at the end of this chapter.
When you start writing programs, you'll quickly find that you need to keep track of different types of information.
Thanks you, Marco, for helping to clarify some of the confusion between when to use Write-Host and when to use Write . The output will be - NULL Justification: nullif returns NULl if given two arguments are same else returns the first specified argument.
So, for the given SQL, output will be NULL. However, the big difference is in concept rather than functionality. The timberdesignmag.comine is, as I mentioned, meant to be the output channel in console applications.