博客代码展示了获取图片URL及尺寸信息的操作。通过Response.Write输出图片URL，使用System.Drawing.Image从文件获取图片，再输出图片的宽度和高度，最后释放图片资源。
Response.Write(ImageButton1.ImageUrl);
System.Drawing.Image logo = System.Drawing.Image.FromFile(Server.MapPath(ImageButton1.ImageUrl));
Response.Write(logo.Width);
Response.Write(logo.Height);
logo.Dispose();
System.Drawing.Image logo = System.Drawing.Image.FromFile(Server.MapPath(ImageButton1.ImageUrl));
Response.Write(logo.Width);
Response.Write(logo.Height);
logo.Dispose();
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