upload a image in image control?

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C#

ASP.NET

hello friends,

i want to do image upload in image control through button click event.
please help me .

my aspx code:

form id="form1" runat="server">
    <div>
        <div style="height: 240px; width: 1104px; margin-left: 97px;" align="center">
            <br />
            <br />
            <asp:Image ID="Image1" runat="server" />
            <br />
            <br />
             nbsp;
            <asp:Button ID="fileupload" runat="server" Text="UPLOAD"            onclick="Button2_Click" />
            <br />
            <br />
            <br />         
        </div>
    </div>
    </form>