How do i compare two strings and get the difference?

for example,

1)

s1 ="abc123"

s2 = "123"

strDiff = abc

2)

s1 = "abc123"

s2=""

strDiff = "abc123"

Based on your description, does the following code meet your requirements?

Using Except extension method to help do this, maybe there is a pure Linq way to achieve that.

  string s1 = "abc123 ";
            string s2 = "123";// or null
            char[] ss = s1.Except(s2).ToArray();
            string diff = new string(ss);
            MessageBox.Show(diff);

Best regards,

Kristin

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