How to distinguish between 0 and O (zero-sum letter O) in the image and print of the Verification Code developed in Asp.net)

How to distinguish between 0 and O (zero-sum letter O) in the image and print of the Verification Code developed in Asp.net)

In notepad, fixedsys font and wst_czec to wst_swed can both display 0 (zero) with a horizontal line in the middle ). To distinguish zero-sum o.

However, the characters starting with WST do not support Chinese characters. They seem to be in the western font, and _ later represents Western countries, such as Spain and Germany. Since fixedsys is not a true type font, there is no crossline between 0 and 0. What you see, what you get ). The final problem is solved using the consolas font. However, the consolas font needs to be downloaded and installed from the Microsoft website. Http://www.microsoft.com/downloads/details.aspx? Familyid = 22e69ae4-7e40-4807-8a86-b3d36fab68d3 & displaylang = enhttp: // four-corner.appspot.com/