title: Control 'ctl00_ContentPlaceHolder1_ gridview ' of type 'GridView' must be placed inside the form IN ASP MASTER PAGE
body: <p>this is pradeep . We have to create Master Pages. we have to add Default page instead of Master pages. </p>
  
  <p>we have to apply the code . I am getting error like this</p>
  
  <p>" Control 'ctl00_ContentPlaceHolder1_ gridview ' of type 'GridView' must be placed inside the form"</p>
  
  <p>here goes my content page</p>
  
  <pre><code>&lt;asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"&gt;
  
  &lt;/asp:Content&gt;
  </code></pre>
  
  <p>here goes my master page </p>
  
  <pre><code>        &lt;asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"   &gt;
  </code></pre>