title: data table filtering (multicolumn)
body: <p>Hello I have a datatable that I would like to filter with a single textbox, non-case sensitive. In other words when a user starts typing into the textbox, I would like the <code>RowFilter</code> to display any rows that CONTAIN the typed information (again regardless of case). </p>
  
  <p>My current code will only display exact matches and only for a single column ("ID"). There are a few other columns I want to include, i.e. "Title", "User Name", "Company", etc.</p>
  
  <p>Any ideas?</p>
  
  <pre><code>private void searchTextBox_TextChanged(object sender, EventArgs e)
  {
     if (searchTextBox.Text.Trim() != "")
     {
        gridToTable.DefaultView.RowFilter = "ID = " + searchTextBox.Text;
     }
     else
     {
        gridToTable.DefaultView.RowFilter = string.Empty;
  
     }
  
  }
  </code></pre>