Refer below article.

Show Hide Edit Button in GridView based on Role in ASP.Net using C# and VB.Net

In this article Gridview column made visible.

In place of you need to replace the Div id having runat = Server.

HTML

<div id="dvDetails" runat="server"></div>

C#

dvDetails.Visible = this.Page.User.IsInRole("Administrator");

VB.Net

dvDetails.Visible = Me.Page.User.IsInRole("Administrator")