1 Page_Load()
2 {
3 this.FileUpload1.Attributes.Add("onchange", "document.getElementById('" + this.Image1.ClientID + "').src=document.getElementById('" + this.FileUpload1.ClientID + "').value");
4
5 }
1 <asp:FileUpload ID="FileUpload1" runat="server" />
2 <br />
3 <asp:Image ID="Image1" runat="server" />
4 <br />
5 <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
6
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