Validating a XAML TextBox/RichTextBox to accept an email address?

Question

I have a TextBox/RichTextBox in XAML that I want to validate to make sure it contains a string with an '@' symbol. I am using this feature to accept an appropriate email address. How can I do it?

Answer 1

One option would be to create a ValidationRule as detailed in the accepted answer here. As for the actual RegEx to use, it depends on how detailed you want the check to be.

(Very) Simple: ^[\w.]+@[\w-]+.[a-z]+$

Complex options: Many options available

Answer 2

You can Get the textbox text string from C# and see if it contains the stuff you need for email
example

XAML & C#

<TextBox Name="txt1" Text="abc@def.com"/>

C#*****************************

bool valid = txt1.Text.contains("@")

if(valid)
{
    whololo
}