title: How to remove a string from a string
body: <p>I am adding a string (a) to another string (b) before I store it in DB, when I retrieve the value from DB, I want to remove the string(b) from string (a). string (b) is a constant. How can I do it</p>
  
  <pre><code>string a= "text1";
  string b="text2";
  string c = a+b;
  </code></pre>
  
  <p>I want to remove b from c after I retrive it from db</p>