c# - RegularExpressionValidator behaves differently than UnitTest RegEx -

i created regex our needs - wrote unittest , after passed wanted upgrade frontend new regex - requiredfieldvalidator somehow doesn't match exact same string unittest does.

here's unittest passes fluently:

[testmethod]     public void basictest()     {         using (shimscontext.create())         {             var basicunicoderegex = new regex(@"^(?:(?:\p{isbasiclatin}|\p{islatin-1supplement}|\p{islatinextended-a}|\p{islatinextended-b}|\p{isipaextensions}|[\u0302\u030c]|\p{islatinextendedadditional}){2,}[*]?)$");              var ismatchstring = "floriân-d̂îétrich wäßterh@gen 1823*";             var isnotmatchstring = "べξぺき";             assert.istrue(basicunicoderegex.ismatch(ismatchstring));             assert.isfalse(basicunicoderegex.ismatch(isnotmatchstring));         }     } 

and that's asp controls don't exact same string nor basic a-z one:

 <asp:textbox runat="server" id="edtnachname"></asp:textbox> <asp:regularexpressionvalidator id="rev_nachname" runat="server" controltovalidate="edtnachname" errormessage="nope" validationexpression="^(?:(?:\p{isbasiclatin}|\p{islatin-1supplement}|\p{islatinextended-a}|\p{islatinextended-b}|\p{isipaextensions}|[\u0302\u030c]|\p{islatinextendedadditional}){2,}[*]?)$">                          </asp:regularexpressionvalidator> 

what's going on here? :o

seems regularexpressionvalidator doesn't support namedblocks (ref: https://msdn.microsoft.com/en-us/library/20bw873z(v=vs.110).aspx#supportednamedblocks)

changing unicode ranges - in case:

^(?:[\u0000-\u02af]|[\u0302\u030c]|[\u1e00-\u1eff]){2,}$ 

- works fine