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        ErrorMessage="¸ñʽ²»×¼È·£¬Ö»ÄÜ(.jpg|.JPG|.gif|.GIF|.bmp|.BMP£©"
        ValidationExpression="^([a-zA-Z]:\\)[0-9a-zA-Z\u4e00-\u9fa5\w\s\\!@#\$%^&\*\(\)_\+\-=\[\]{};'\,\.]*(.jpg|.JPG|.gif|.GIF|.bmp|.BMP)$"
></asp:RegularExpressionValidator>
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  string filename = FileUpload1.FileName;
        string savePath = Server.MapPath("../images/adverts/");
        string extension = Path.GetExtension(filename);
        string imageName = "";
        imageName = DateTime.Now.ToString("yyyyMMddhhmmss") + extension;
        savePath = savePath + imageName;
        FileUpload1.PostedFile.SaveAs(savePath);


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