RichTextBox-读取相邻字符以进行选择 [英] RichTextBox - read adjacent chars to selection

问题描述

嗨.
为了激活程序中的按钮，我需要从一个富文本框中读取选定的文本，并检查该选择是否在<"之间.和>".
示例:如果选择为"123456"，并且前一个字符为<"并且以下字符为>" (因此整个文本类似于..< 123456> ..)，然后将选中该按钮.否则，按钮的checked属性需要为False.
我怎么做?在这种情况下，正则表达式是您最好的朋友. 此处 [ Example: if selection is "123456" and if the previous character is "<" and the following character is ">" (so the entire text is something like ..<123456>..) then the button will be checked. Otherwise, the checked property of the button needs to be False.
How do I do that? Thanks

解决方案

Regular Expressions are your best friend in this situation. Here[^]

Hook an event for your rich text box like KeyUp and evaluate the string in the text box.

Why do you make this automatic ?
just check /validate this things on button click.

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