c#實現文件寫入數據表/以二進制流保存到數據庫，並實現下載

上傳：

1、上傳文件先保存到服務器   File.SaveAs(path)

2、sql（文件和sql在一個服務器上）進行保存操作：

insert into File(filename,filebody)

values('長大了是否.txt',(SELECT * FROM OPENROWSET(BULK '" + path + "',SINGLE_BLOB) AS x))

 

下載：

if (reader.Read())

Response.Clear();
String strFileName = reader["oldname"].ToString();
Response.ContentType = "APPLICATION/OCTET-STREAM";
Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName));
Response.Buffer = true;
Response.BinaryWrite((byte[])reader["filecontent"]);