title: asp.net error as "Too many characters in character literal"
body: <p>I am calling a javascript on index change of a DropDownList, i do as follows</p>
  
  <pre><code>&lt;asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" 
  OnSelectedIndexChanged="toggleVisibility('Button1');"&gt;
  </code></pre>
  
  <p>I get the error during compiling as for the above line of code</p>
  
  <pre><code>Too many characters in character literal
  </code></pre>
  
  <p>Can anyone help me solve this issue?</p>