Monthly Archives: May 2018

Draw different styles of “illuminated” text in C#

Posted on May 22, 2018 by Rod Stephens

My previous post Draw “illuminated” text in C# showed how to draw “illuminated” text. It drew each paragraph’s initial letter in a large font with a box around it. Real illuminated manuscripts typically make the initial letter much more elaborate. … Continue reading →

Posted in fonts, graphics, strings | Leave a comment

Draw “illuminated” text in C#

Posted on May 21, 2018 by Rod Stephens

This example lets you draw “illuminated text” where each paragraph begins with an oversized letter. In some illuminated manuscripts, the first letter of a paragraph is drawn in a larger font than the remaining text. This example does something similar. … Continue reading →

Posted in fonts, graphics, strings | Tagged C#, C# programming, example, example program, fonts, graphics, illuminated text, strings, text, Windows Forms programming | 2 Comments

Merge directories in C#

Posted on May 17, 2018 by Rod Stephens

This example lets you merge directories. Once upon a time, if you used Windows Explorer to move a file from one directory to another and the destination directory already contained a file with that name, you had the option of … Continue reading →

Posted in directories, files, system, tools | Tagged C#, C# programming, copy files, directories, example, example program, File Explorer, files, merge directories, merge files, move files, system, tools, Windows Explorer, Windows Forms programming | Leave a comment

Use a FileSystemWatcher to build a spooler in C#

Posted on May 16, 2018 by Rod Stephens

This example uses a FileSystemWatcher to implement a spooling program. SPOOL is an ancient computer acronym dating from the 1950s that stands for “Simultaneous Peripheral Operations On-Line.” It is a technique in which jobs are placed in a queue in … Continue reading →

Posted in controls, files | Tagged C#, C# programming, controls, example, example program, file changes, files, FileSystemWatcher, spool, spooler, spooling, watch files, Windows Forms programming | Leave a comment

Implement interfaces explicitly or implicitly in C#

Posted on May 15, 2018 by Rod Stephens

Suppose you create a class and in the declaration you indicate that it implements one or more interfaces. If you right-click an interface’s name, the dropdown displayed by Visual Studio includes an “Implement Interface” submenu. If you look at the … Continue reading →

Posted in interfaces, syntax | Tagged C#, C# programming, example, example program, explicit implementation, implement, implement interfaces, implicit implementation, interfaces, syntax, Windows Forms programming | Leave a comment

Understand ways to end case blocks in C#

Posted on May 14, 2018 by Rod Stephens

There are several ways that you can exit case blocks in a switch statement. For example, consider the following code. string result = “”; int control = 1; switch (control) { case 1: case 2: result = “One or two”; … Continue reading →

Posted in syntax | Tagged C#, C# programming, case, case blocks, case statement, example, example program, switch, switch statement, syntax, Windows Forms programming | 2 Comments

Use a password protected Access database in C#

Posted on May 10, 2018 by RodStephens

This example shows how you can open and use a password protected Access database in C#. It also shows how you can use the database’s password protection to provide a login form for your program. Note that the security used … Continue reading →

Posted in database, Office | Tagged Access, C#, C# programming, database, example, example program, Office, password protected Access database, passwords, Windows Forms programming | Leave a comment

Generate a random password in C#

Posted on May 9, 2018 by RodStephens

As I mentioned in a recent post, you should always use a strong password for every login. Remember, a computer can perform millions or billions of operations per second, so your daughter’s birthday or the name of your son’s guinea … Continue reading →

Posted in algorithms, cryptography, internet | Tagged algorithms, C#, C# programming, cryptography, example, example program, internet, password, password generator, Windows Forms programming | Leave a comment

Why Twitter recently wanted you to change your password

Posted on May 8, 2018 by RodStephens

A few days ago, Twitter asked all of its users to change their passwords. The reason they did that was that they found a bug in their system that made an internal log file store passwords in an unencrypted form. … Continue reading →

Posted in cryptography, internet, miscellany | Tagged C#, C# programming, cryprography, encryption, example, example program, internet, miscellany, password manager, passwords, Twitter, Windows Forms programming | Leave a comment

Control a loop that uses floating-point values in C#

Posted on May 8, 2018 by Rod Stephens

Sometimes you might need to use a floating-point variable that loop over a range of values. For example, you might want a value to step through the values 0.0 through 1.0 in increments of 0.1. The sequence of numbers would … Continue reading →