handle escape (@) character in xamarin xaml

Asked Aug 31 '16 at 07:24

Active Aug 31 '16 at 08:47

Viewed 105 times

I have a RegExText bindable property in custom Entry control on Xamarin.Forms, I suppose to give ExpressionText in RegExText property. When I tried to validate email address. It is showing nested qualifier exception.

<local:CustomRegexEntry x:Name="entryEmail" 
                        Placeholder="{Binding .EmailLabelText}" 
                        FontAttributes="Italic" 
                        Text="{Binding EmailID}"
                        Image="Email"
                        RegExText="^([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5})$"
                        Unfocused="onEntryEmail_Unfocused"/>

How can I include @ character on RegExText property.

edited Aug 31 '16 at 08:47

Yehor Hromadskyi

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asked Aug 31 '16 at 07:24

Naveen Bathina

Try `RegExText="^([a-zA-Z0-9_.-]+)@([a-zA-Z0-9_.-]+)[.]([a-zA-Z]{2,5})$"` – Wiktor Stribiżew Aug 31 '16 at 09:00
tried but its not valid email expression. I didn't get any error this time. – Naveen Bathina Aug 31 '16 at 09:24
What do you mean to say by *its not valid email expression*? That means your regex is not a valid email regex, right? Then why are you using it at all? – Wiktor Stribiżew Aug 31 '16 at 09:30
Yes, I have changed to new valid email expression. Now working fine. My main intention is how to handle nested quantifier error on such scenarios like inputting regular expression in XAML through bindable property. – Naveen Bathina Aug 31 '16 at 09:55
You had no real issue, just the `-` created an invalid range I guess. – Wiktor Stribiżew Aug 31 '16 at 09:56

handle escape (@) character in xamarin xaml

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