C# monitor text file for changes

Now add a button to start the file monitoring. Add a click event handler to the button by double-clicking the button. Set the directory to watch by setting the path property. Text; Type of changes to watch is set by the property NotifyFilter.

LastAccess NotifyFilters. LastWrite NotifyFilters. Add event handlers to capture events like Changed, Created, Deleted and Renamed.

This may be useful when you want to watch over the source code of a production box expect the log files. So that you can filter your watch by extensions. The following code uses the StreamWriter class to open, to write, and to close the text file. In a similar way to the StreamReader class, you can pass the path of a text file to the StreamWriter constructor to open the file automatically. The WriteLine method writes a complete line of text to the text file.

This code creates a file that is named Test. Open Test. Unlike the previous example, this code passes two additional parameters to the constructor.

The first parameter is the file path and the file name of the file. The second parameter, true , specifies that the file is opened in append mode. If you specify false for the second parameter, the contents of the file are overwritten each time you run the code.

Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Visit chat. Linked Related Hot Network Questions. Stack Overflow works best with JavaScript enabled. FullPath, Environment. A screenshot of this can be seen below: As you can see from the screenshot above, whenever a file is added the FileSystemWatcher is firing a change event for the folder and two more for the file.

FileName NotifyFilters. Size; This line of code is telling the FileSystemWatcher to only watch for changes to file names and file sizes. Srini Link Reply. Nice article, if we want to monitor file copy and open events also, then how can we achieve it. How to use Temporary Files in C. Formatting Decimals in C. Categories ASP. This website uses cookies We are using cookies to help make this website better.

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