Oracle C 連線Oracle資料庫

1、確保已安裝oracle客戶端，已建立資料庫

2、在專案中安裝oracle.manageddataaccessnuget包

在vs中工具——nuget包管理器——管理解決方案的nuget程式包——搜尋安裝即可（確保聯網）

3、新增引用using oracle.manageddataaccess.client;

4、建立查詢方法

確定連線字串：

data source：資料來源

# generated by oracle configuration tools.

listener_orcl =

(address = (protocol = tcp)(host = localhost)(port = 1521))

oraclr_connection_data =

(description =

(address_list =

(address = (protocol = ipc)(key = extproc1521))

)(connect_data =

(sid = clrextproc)

(presentation = ro)

))orcl =

(description =

(address = (protocol = tcp)(host = localhost)(port = 1521))

(connect_data =

(server = dedicated)

(service_name = orcl)

))連線字串data source為最後一部分

(description =

(address = (protocol = tcp)(host = localhost)(port = 1521))
(connect_data =
(server = dedicated)
(service_name = orcl)))

password：安裝時設定的口令（密碼）

public datatable exportdatatable(string tablename, string selectstr)

trywhere ";
oraclecommand command = new oraclecommand(cmdstr, con);
oracledataadapter adapter = new oracledataadapter(command);
adapter.fill(dt);}}
catch (exception)
return dt;
}