To display an image in gridview (file name of the image is stored in database)

<asp:FileUpload ID="fileImage" runat="server"  />

Code for storing the fileImage.FileName in database goes here...

fileImage.SaveAs(Server.MapPath(".\\images\\" + fileImage.FileName));

<asp:GridView ...>
<Columns>
<asp:TemplateField  HeaderText="Image" >
	<ItemTemplate >
	<asp:Image Height="30" Width="45" ID="img1" runat="server" ImageUrl='<%#Eval("Image","images/{0}") %>' />
	
</ItemTemplate></asp:TemplateField>
</Columns></asp:GridView>