title: How to clear data in DataGridView?
body: <p>I am new to C#. How to Clear data in <code>DataGridView</code>?</p>
  
  <p>I have some <code>data</code> in <code>datagridview</code> and I have one <code>drop down box</code> at every <code>index</code> changed  </p>
  
  <p>I want <code>datagrid view</code> will be changed. but I did not get the solution just i Added to </p>
  
  <p>previous data can any one help  </p>