C# WPF Hyperlink Mailto: Body will not be printed when using binding

I try to use the Tag in C# WPF to build a link that openes the standard email client.

This is my WPF Code:

<TextBlock>
<Hyperlink NavigateUri="mailto:[email protected]?subject=SubjectExample&amp;body=BodyExample" RequestNavigate="Hyperlink_RequestNavigate">
Click here
</Hyperlink>
</TextBlock>

This works so far very fine. Now i want to make it a little more dynamically, so i tried to bind a variable with all necessary information:

<TextBlock>
<Hyperlink NavigateUri="{Binding MyValue}" RequestNavigate="Hyperlink_RequestNavigate">
Click here
</Hyperlink>
</TextBlock>

The Public Value MyValue looks like this:

public string MyValue{
get { return "mailto:" + myEmail + "?subject=" + mySubject + "&amp;body=TEST"; }

Everything works fine except the Body Text. "TEST" should be printed but it isnt. It has been printed in my first try without binding but not in this case

Am i doing something wrong?

Solution

Try to escape the values using the Uri.EscapeDataString method:

public string MyValue
{
    get
    {
        return String.Format("mailto:{0}?subject={1}&body=TEST",
        Uri.EscapeDataString(myEmail),
        Uri.EscapeDataString(mySubject));
    }
}