C#.net向oracle的blob字段插入文件

新鲜出炉的代码

private Boolean ImportGatherFile(string BlobFileFolder, string Xqdm, string Xqmc)
{
try
{
System.IO.FileStream fs = null;

string[] blobFiles = Directory.GetFiles(BlobFileFolder);
if (blobFiles.Length == 0)
return false;
for (int i = 0; i < blobFiles.Length; i++)
{
//文件流
string pPath = blobFiles[i];
fs = new System.IO.FileStream(pPath, FileMode.Open,FileAccess.Read );
Byte[] blob = new Byte[fs.Length];
fs.Read(blob, 0, blob.Length);
fs.Close();
//最大ID
int intMaxOID = GetMaxOID("Tablea", "F_OID");
//获取当前年代
string strYear = DateTime.Now.Year.ToString().Substring(0, 4);
//文件名
string pFileName;
pFileName = pPath.Substring(pPath.LastIndexOf("//")+1);

OracleParameter param = null;
OracleCommand cmd = null;
cmd = mPropConnection.CreateCommand(); //mPropConnection是OracleConnection类型变量
cmd.CommandText = "insert into Tablea(F_OID,F_XZQHDM,F_XZQHMC,F_FILENAME,F_FILE,F_YEAR) VALUES("+intMaxOID +",'" + Xqdm + "','" + Xqmc + "','"+pFileName+"',:Doc,'"+strYear+"')";
param = new OracleParameter("Doc", OracleType.Blob, blob.Length, ParameterDirection.Input, false, 0, 0, null, DataRowVersion.Current, blob);
cmd.Parameters.Add(param);
cmd.ExecuteNonQuery();
}
return true;

}
catch (Exception ex)
{
return false;
}
}

应该注意的问题

1.FileStream读取文件的代码;

2.命令变量(cmd )的参数";Doc"在oracle中用:在sql数据库中应该用@;

3.命令参数变量(param )中,参数只用"Doc"不加冒号了,至于sql中是否应该用@暂时未测试,晚上看的代码好像需要加

4.命令参数变量(param )的类型,OracleType.Blob表示插入的类型.试过用oledb连接来完成此功能,只可惜没有找到合适的插入类型.