 
/// 將文件流寫入數(shù)據(jù)庫 
/// </summary> 
/// <param name="filePath">存入數(shù)據(jù)庫文件的路徑</param> 
/// <param name="id">數(shù)據(jù)庫中插入文件的行標(biāo)示符ID</param> 
/// <returns></returns> 
public int UploadFile(string filePath, string id) 
{ 
byte[] buffer = null; 
int result = 0; 
if (!string.IsNullOrEmpty(filePath)) 
{ 
String file = HttpContext.Current.Server.MapPath(filePath); 
buffer = File.ReadAllBytes(file); 
using (SqlConnection conn = new SqlConnection(DBOperator.ConnString)) 
{ 
using (SqlCommand cmd = conn.CreateCommand()) 
{ 
cmd.CommandText = "update DomesticCompanyManage_Main_T set ZBDocumentFile = @fileContents where MainID ='" + id + "'";; 
cmd.Parameters.AddRange(new[]{ 
new SqlParameter("@fileContents",buffer) 
}); 
conn.Open(); 
result = cmd.ExecuteNonQuery(); 
conn.Close(); 
} 
} 
return result; 
} 
else 
return 0; 
} 

2、從數(shù)據(jù)庫中將文件讀出并建立相應(yīng)格式的文件
從數(shù)據(jù)庫中讀取文件，只需根據(jù)所需的路徑建立相應(yīng)的文件，然后將數(shù)據(jù)庫中存放的二進制流寫入新建的文件就可以了
如果該目錄下有同名文件，則會將原文件覆蓋掉

復(fù)制代碼代碼如下:

 
//從數(shù)據(jù)庫中讀取文件流 
//shipmain.Rows[0]["ZBDocument"],文件的完整路徑 
//shipmain.Rows[0]["ZBDocumentFile"],數(shù)據(jù)庫中存放的文件流 
if (shipmain.Rows[0]["ZBDocumentFile"] != DBNull.Value) 
{ 
int arraySize = ((byte[])shipmain.Rows[0]["ZBDocumentFile"]).GetUpperBound(0); 
FileStream fs = new FileStream(HttpContext.Current.Server.MapPath(shipmain.Rows[0]["ZBDocument"].ToString()), FileMode.OpenOrCreate, FileAccess.Write);//由數(shù)據(jù)庫中的數(shù)據(jù)形成文件 
fs.Write((byte[])shipmain.Rows[0]["ZBDocumentFile"], 0, arraySize); 
fs.Close(); 
} 

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