Regex Hex Match

OK at the moment the for the regex you have above for these two inputs below thats in purple are dropping in the same false or case below which is incorrect.

Inputs

var t = r.IsMatch("-1.70e+9");  This is dropping in the else statement as false

var t = r.IsMatch("3D"); This is dropping in the else statement as false

Expected Result: 1. This is what suppose to happen, the minute an inputvalue or regex matches an HEX value or not an number it needs drop in the true condition statement.
                        2. The minute the regex or inputvalues comes across an integer, float, or scientific notation ( Like "-1.70e+9") number, it should drop in the false statement.

Basically I want a regex that that matches any hex value or or anything thats not an number except for integer, float, or scientific notation ( Like "-1.70e+9") number. I am not for sure if this is much clearer or not.

var t = r.IsMatch("-1.70e+9");  This is dropping in the else statement as false

var t = r.IsMatch("3D"); This is dropping in the else statement as True





                                if (regexHexMatch.IsMatch(data.ColorValue))
                                {

                                    continue;
                                }
                                else
                               {

                                  //Do something

                                 }

hi,

can please give more information.
actually i am confuse for your requirement.

OK regex is not working how it suppose to , give you example,

Regex r = new Regex(@"^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$");

Out put that i expect the regex to do.  whereever you see false the the IsMatch function suppose to return true, whereever you see false the the IsMatch function suppose to return true,The regex is suppose to only return true if it comes across or the Value is an Hex value only or not an number, now if the value is scientific notation then it should return false, because for my case I want to process scientific notation values, at the moment the regex is returning false for both hex values and scientific notation values which is not the correct values. let me know if you understand

var t = r.IsMatch("-4.70e+9");  False

var t = r.IsMatch("+2.70e+9");  False

var t = r.IsMatch("-1.70e+9");  False

var t = r.IsMatch("3D"); True

var t = r.IsMatch("11FF"); True

                                if (regexHexMatch.IsMatch(data.Value))
                                {

                                    //Hex values or not  number only
                                    ;continue
                                }
                                else
                               {
                                  //Scientific notation numbers only
                                  false;

                                 }

hi,

please refer
http://en.wikipedia.org/wiki/Regular_expression

hope you got your answer.

Thanks, you are the greatest. Can you send me an website studying regex to better my skills.

also if you don't mind can break down the regex below step by step that you provided so I can understand.

Explain   ^

Explain   [-+]

Explain ?

Explain why the open close brackets

Explain $

Explain  *\.

@"^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$"

Actually I am not dealing with colors, I just made an random exmple to get the point the point across. The actually values can only be and integer, float or decimal, once I hit an hex value or I hit anything thats not an number throw an error, report it and continue.

so really my regex  needs to verity if the value  is not a number,  float or decimal and also if the value is a hex number, that way I can throw an error and report to my status log. keep in mind, the value can be ab scientific notation which  is acceptable, scientific notation has an "E".

Can you help write the regex for this case above.

Hi,

your color value may be #003344,#ff4455, ect

so please try,

Regex regexHexMatch = new Regex("^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$");

hope this help.