The Daily Newbie - Using the Chr() function
To show the usage of the Chr() function.
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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="GENERATOR" content="Microsoft FrontPage Express 2.0"> <title>Daily Newbie - 04/29/2001</title> </head> <body bgcolor="#FFFFFF"> <p> </p> <p class="MsoTitle"><img width="100%" height="3" v:shapes="_x0000_s1027"></p> <p align="center" class="MsoTitle"><font size="7"><strong>The Daily Newbie</strong></font></p> <p align="center" class="MsoTitle"><strong>“To Start Things Off Right”</strong></p> <p align="center" class="MsoTitle"><font size="1">Fourth Edition April 28, 2001 Free</font></p> <p align="center" class="MsoTitle"><img width="100%" height="3" v:shapes="_x0000_s1027"></p> <p align="center" class="MsoNormal" style="text-align:center"> </p> <p align="center" class="MsoNormal" style="text-align:center"> </p> <p class="MsoNormal"><font face="arial">Today's command, Chr() is almost a must-know for a lot of string manipulation and should be one of the fundimental tricks in your VB coding bags. If you have read the previous Newbie articles, you already know about the <a href="http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=22745&blnEditFeedback=TRUE&lngWId=1">Asc() function</a>. The Chr() function is a compliment of it. While the Asc() Function returns an ASCII code for a character, the Chr() function returns a character for an ASCII character.</font></p> <p class="MsoNormal"><font size="2" face="Arial"></font></p> <p class="MsoNormal" style="margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Today’s Keyword:</strong> </font><font size="4" face="Arial"> Chr()</font></p> <p class="MsoNormal" style="margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Name Derived From: </strong> <font size="2" face="Arial"><strong>Character - </strong> a symbol (as a letter or number) that represents information; also : a representation of such a character that may be accepted by a computer - <em><a href="http://www.webster.com/">Webster's online dictionary.</a></em></font></p> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Used for </strong> Converting an ASCII character to a string character.</font></p> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>VB Help Description: </strong> Returns a String containing the character associated with the specified character code. </font></p> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Plain English: </strong> Takes a <a href="http://www.orst.edu/aw/tutorials/html/ascii-chart.html">ASCII Character code </a>and converts it to a "normal" text character. </font></p> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Syntax: </strong> Chr(ASCII Code)</font></p> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Usage: </strong> strCharacter =Chr(65) </font></p> <p class="MsoNormal" style="margin-left:135.35pt;text-indent:-135.35pt"><font size="2" face="Arial"><strong>Copy & Paste Code:</strong></font></p> <br> <br> Today's code snippet will print a list of ACII codes and their equivilent character values in the debug window. <br> <br> <pre> Dim intASCII As Integer For intASCII = 49 To 122 Debug.Print Chr(intASCII) Next intASCII </pre> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"> </p> <p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto; margin-left:135.0pt;text-indent:-135.0pt"><font size="2" face="Arial"><strong>Notes: </strong></p> The reason that the Chr() function is so important is that a lot of things in Visual Basic as based on ASCII values. For example, in the KeyPress() event of an object, the value that is passed in as the pressed key is an ASCII value. If you are wanting to display each character on the keypress event, you can do it with this code: <pre> Private Sub Form_KeyPress(KeyAscii As Integer) MsgBox Chr(KeyAscii) End Sub </pre> Since the KeyAscii is a VB-defined parameter, the ability to convert it to a character value is pretty important. Chr() Makes this simple. I used Chr() in a simple "word scrambling" project that you can view by <a href="http://www.planetsourcecode.com/xq/ASP/txtCodeId.8373/lngWId.1/qx/vb/scripts/ShowCode.htm">clicking here.</a> <br><br> <br><br> Tomorrow's Keyword: Command() </font></p> </body> </html>
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