字符串匹配的正则表达式

Question

I need to match my string with "*B*[XXX]" . So for example it could be "MB0[23]" or "DB50.DBB152[128]" . At this moment, it's too complicated for me.

Please help.

Answer 1

This will select both of your examples, but unfortunately with such little to work with, I can't be certain that this is what you want.

/\\wB\\d+(?:\\.\\w{3}\\d+)?\\[\\d+\\]/ should give you what you want.

With this regex, MB0[23] will be returned, as well as all of DB50.DBB152[128] .

Hope this solves your problem!

Answer 2

If I get it right from your example, your format has to contain a capital B and brackets with numbers in it. Try to use one of these:

This for strings that contain a "B" and brackets after it (with optional contents):

char c = Convert.ToChar(65535);
string format = @"/(?:[\0-" + c + @"]+)?B(?:[\0-" + c + @"]+)?\[(?:[\0-" + c + @"]+)?\]/";

This for strings that contain a "B" and brackets after it with numbers or nothing in it:

char c = Convert.ToChar(65535);
string format = @"/(?:[\0-" + c + @"]+)?B(?:[\0-" + c + @"]+)?\[(?:\d+)?\]/";

This for strings that contain a "B" and brackets after it with numbers in it:

char c = Convert.ToChar(65535);
string format = @"/(?:[\0-" + c + @"]+)?B(?:[\0-" + c + @"]+)?\[(?:\d+)\]/";

This should match both examples you provided. You can check it and learn this format easily here: http://www.regexr.com/