[英]Insert image to database with FileUpload
我想使用FileUpload控件將圖像插入數據庫。 我嘗試使用以下代碼執行此操作:
protected void btnUploadAvatar_Click(object sender, EventArgs e)
{
if (fuAvatar.PostedFile != null && fuAvatar.PostedFile.FileName != "") ;
{
byte[] imageSize = new byte[fuAvatar.PostedFile.ContentLength];
HttpPostedFile uploadImage = fuAvatar.PostedFile;
uploadImage.InputStream.Read(imageSize, 0, fuAvatar.PostedFile.ContentLength);
SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True");
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "INSERT INTO User(image" + "VALUES (@Image) WHERE userid = @Userid";
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
SqlParameter UploadedImage = new SqlParameter("@Image", SqlDbType.Image, imageSize.Length);
UploadedImage.Value = imageSize;
SqlParameter userid = new SqlParameter("@Userid", SqlDbType.Int);
userid.Value = Convert.ToInt32(Session["userid"]);
cmd.Parameters.Add(userid);
cmd.Parameters.Add(UploadedImage);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
/*if(result > 0)
{
lblResult.Text = "Avatar lastet opp";
}*/
}
}
但是我在cmd.ExecuteNonQuery()上收到一個錯誤。 其中說:用戶代碼未處理SqlException,關鍵字'User'附近的語法不正確。 我已經嘗試了10KB以下的* .jpg和* .png文件。
您有語法錯誤:
cmd.CommandText =
"INSERT INTO User(image" + "VALUES (@Image) WHERE userid = @Userid";
缺少)
和空格:
cmd.CommandText =
"INSERT INTO User(image)" + " VALUES (@Image) WHERE userid = @Userid";
或者,更好的是(為什么要串聯在一起?):
cmd.CommandText =
"INSERT INTO User(image) VALUES (@Image) WHERE userid = @Userid";
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.