Image to fit in asp page

Question

I am displaying image from a folder using an asp image control in a timer.The image doest not correctly fit into the screen like it gets vertical and hortizontal scroll bars.

 

 

aspx code

 

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<asp:UpdatePanel ID="BannerPanel" runat="server" UpdateMode="Conditional" >

<ContentTemplate>

<asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="5000" Enabled="false" >

</asp:Timer>

<asp:Button ID="btnDisplay" runat="server" Text="Display " OnClick="btnDisplay_Click" />

<asp:Image ID="Image1" runat="server" style="width: 100%;" />

</ContentTemplate>

</asp:UpdatePanel>

 

 

code behind

 

string localstr = Server.MapPath("~//bin//Images//"+ Filename );

Byte[] bytes = File.ReadAllBytes(localstr);

string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);

Image1.ImageUrl = "data:image/" + ext + ";base64," + base64String;