ASP.net(c#)将图片以二进制格式存储到数据库中

using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
try
{

string ImgPath = FileUpload1.PostedFile.FileName;
string ImgName = ImgPath.Substring(ImgPath.LastIndexOf("//") + 1);
string ImgExtend = ImgPath.Substring(ImgPath.LastIndexOf(".") + 1);
if (!(ImgExtend == "bmp" || ImgExtend == "jpg" || ImgExtend == "gif"))
{
Label3.Text = "上传图片的格式不正确！";
return;
}
int FileLen = this.FileUpload1.PostedFile.ContentLength;
Byte[] FileData = new Byte[FileLen];
HttpPostedFile hp = FileUpload1.PostedFile;//创建访问客户端上传文件的对象
Stream sr = hp.InputStream;//创建数据流对象
sr.Read(FileData, 0, FileLen);//将图片数据放到FileData数组对象实例中,其中0代表数组指针的起始位置,FileLen表示要读取流的长度(指针的结素位置)
SqlConnection con = new SqlConnection("server=(local);user id=sa;pwd=;database=");
con.Open();
SqlCommand com = new SqlCommand("INSERT INTO tb_15 (name) VALUES (@imgdata)", con);
com.Parameters.Add("@imgdata", SqlDbType.Image);
com.Parameters["@imgdata"].Value = FileData;
com.ExecuteNonQuery();
Label1.Text = "保存成功！";
}
catch (Exception error)
{

Label1.Text = "处理出错！原因为：" + error.ToString();
}
}

}