title: TextChanged event of TextBox in GridView WPF MVVM
body: <p>I am new to the MVVM pattern. I have a  form, that includes one <code>TextBox</code>, and one <code>DataGrid</code>. My <code>DataGrid</code> binding with an <code>ObservableCollection</code>. What I would like is to be able to have the search with <code>TextChanged</code> event of <code>TextBox</code> and show result in <code>DataGrid</code>.</p>
  
  <p>I'm using a <code>TextBox</code> in the <code>GridView</code> and its in Model View-View Model. Basically, what I want to do is call a method every time the text in the box is edited. That is when the text is entered, the function will call. That is the text change event should work. But in Model View-View Model, what can I do? Please help me.Any idea....</p>