{"id":1653,"date":"2014-02-26T07:00:00","date_gmt":"2014-02-26T07:00:00","guid":{"rendered":"https:\/\/blogs.msdn.microsoft.com\/oldnewthing\/2014\/02\/26\/why-are-leading-digits-converted-to-language-specific-digit-shapes-but-not-trailing-digits-and-how-do-i-suppress-the-conversion-entirely\/"},"modified":"2014-02-26T07:00:00","modified_gmt":"2014-02-26T07:00:00","slug":"why-are-leading-digits-converted-to-language-specific-digit-shapes-but-not-trailing-digits-and-how-do-i-suppress-the-conversion-entirely","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/oldnewthing\/20140226-00\/?p=1653","title":{"rendered":"Why are leading digits converted to language-specific digit shapes, but not trailing digits, and how do I suppress the conversion entirely?"},"content":{"rendered":"

If you have a string like 12345ABCDE67890<\/code>, and you render it on an Arabic system, you might get ٠١٢٣٤ABCDE67890<\/span>. The leading digits are rendered as Arabic-Indic digits, but the trailing digits are rendered as European digits. What’s going on here?\n This is a feature known as contextual digit substitution<\/i>. You can specify whether European digits are replaced with native equivalents by going to the Region<\/i> control panel (formerly known as Regional and Language Options<\/i>), clicking on the Formats<\/i> tab, going to Additional settings<\/i> (formerly known as Customize this format<\/i>), and looking at the options under Use native digits<\/i>. The three options there correspond to the three values for LOCAL_IDIGITSUBSTITUTION<\/code><\/a>.\n Programmatically, you can override the user preference (if you know that you are in a special case, like an IP address) by following the instructions in MSDN<\/a>.<\/p>\n