无法将byte 数组数据保存到C＃中的数据库中。 它节省了0x

我正在尝试上传文件并将其二进制内容保存到我的数据库字段中。 每次我尝试保存时，它只是以0x为单位输入数据库。

这是相关的代码：

我建立变量：

 HttpPostedFile file = fileInput.PostedFile; 

而且，它击中了这个function：

 LoadFile(gAttachmentContentID, file.InputStream, trn); 

其定义为：

 public static void LoadFile(Guid gAttachmentContentID, Stream stm, IDbTransaction trn) { const int BUFFER_LENGTH = 40 * 1024; byte[] binFILE_POINTER = new byte[32]; //Testing check out check in // 01/20/2006 Paul. Must include in transaction SqlProcs.spATTACHMENTS_CONTENT_InitPointer(gAttachmentContentID, ref binFILE_POINTER, trn); using (BinaryReader reader = new BinaryReader(stm)) { int nFILE_OFFSET = 0; byte[] binBYTES = reader.ReadBytes(BUFFER_LENGTH); while (binBYTES.Length > 0) { // 08/14/2005 Paul. gID is used by Oracle, binFILE_POINTER is used by SQL Server. // 01/20/2006 Paul. Must include in transaction SqlProcs.spATTACHMENTS_CONTENT_WriteOffset(gAttachmentContentID, binFILE_POINTER, nFILE_OFFSET, binBYTES, trn); nFILE_OFFSET += binBYTES.Length; binBYTES = reader.ReadBytes(BUFFER_LENGTH); } } } 

如何将整个文件保存到数据库中才能读取正确的内容？

谢谢。

编辑：

  #region spATTACHMENTS_CONTENT_WriteOffset /// 
 /// spATTACHMENTS_CONTENT_WriteOffset /// 
 public static void spATTACHMENTS_CONTENT_WriteOffset(Guid gID, byte[] binFILE_POINTER, Int32 nFILE_OFFSET, byte[] byBYTES) { DbProviderFactory dbf = DbProviderFactories.GetFactory(); using ( IDbConnection con = dbf.CreateConnection() ) { con.Open(); using ( IDbTransaction trn = con.BeginTransaction() ) { try { using ( IDbCommand cmd = con.CreateCommand() ) { cmd.Transaction = trn; cmd.CommandType = CommandType.StoredProcedure; if ( Sql.IsOracle(cmd) ) cmd.CommandText = "spATTACHMENTS_CONTENT_WriteOff"; else cmd.CommandText = "spATTACHMENTS_CONTENT_WriteOffset"; IDbDataParameter parID = Sql.AddParameter(cmd, "@ID" , gID ); IDbDataParameter parFILE_POINTER = Sql.AddParameter(cmd, "@FILE_POINTER" , binFILE_POINTER ); IDbDataParameter parMODIFIED_USER_ID = Sql.AddParameter(cmd, "@MODIFIED_USER_ID", Security.USER_ID ); IDbDataParameter parFILE_OFFSET = Sql.AddParameter(cmd, "@FILE_OFFSET" , nFILE_OFFSET ); IDbDataParameter parBYTES = Sql.AddParameter(cmd, "@BYTES" , byBYTES ); cmd.ExecuteNonQuery(); } trn.Commit(); } catch(Exception ex) { trn.Rollback(); throw(new Exception(ex.Message, ex.InnerException)); } } } } #endregion 

Answer 1

我遇到了同样的问题，也就是第一次在数据库端正确保存图像，但如果后来validation失败然后我在输入有效数据后再次尝试保存图像，我会在图像列中得到0x 。 为了解决这个问题，我做了@Ann L.所说的：

 byte[] photo = null; if(model.Photo != null) { var stream = model.Photo.InputStream; stream.Position = 0; using(BinaryReader br = new BinaryReader(model.Photo.InputStream)) { photo = br.ReadBytes(model.Photo.ContentLength); } }