SQL數據庫連接語句
一般的遠程訪問的寫成這樣:
Data Source=IP ;Initial Catalog=數據庫名 ;UserID= 用戶名 ;Password=密碼
本地訪問的寫成這樣:
Data Source=(local);Initial Catalog=數據庫名 ;UserID= 用戶名 ;Password=密碼
如果是本地的,通過windows組件驗證的(也就是沒有用戶名,密碼的)寫成這樣:
Data Source=(local);Initial Catalog=數據庫名 ;Integrated Security=True
如果不是默認的實例,假如實例名是SQLEXPRESS,寫成這樣:
Data Source=(local)/SQLEXPRESS ;Initial Catalog=數據庫名 ;Integrated Security=True
ExecuteReader 簡單高效的,單向前的數據查詢。返回一個SqlDataReader對象 通常用於讀取數據 ExecuteNonQuery 返回一個int類型的值,返回數據庫中所影響的行數。 用於對數據庫的各種操作 ExecuteScalar 返回讀出結果的第一行第一列 |
WorkflowIdled 事件 .NET Framework 類庫 WorkflowRuntime. . :: . WorkflowIdled 事件
更新:2007 年 11 月
在工作流實例進入空閑狀態後發生
static void Main()
{
string connectionString = "Initial Catalog=SqlPersistenceService;Data Source=localhost;Integrated Security=SSPI;" ;
using (WorkflowRuntime workflowRuntime = new WorkflowRuntime())
{
ExternalDataExchangeService dataService = new ExternalDataExchangeService();
workflowRuntime.AddService(dataService);
dataService.AddService(expenseService);
workflowRuntime.AddService(new SqlWorkflowPersistenceService(connectionString));
workflowRuntime.StartRuntime();
workflowRuntime.WorkflowCompleted += OnWorkflowCompleted;
workflowRuntime.WorkflowTerminated += OnWorkflowTerminated;
workflowRuntime.WorkflowIdled += OnWorkflowIdled;
workflowRuntime.WorkflowAborted += OnWorkflowAborted;
Type type = typeof(SampleWorkflow1);
WorkflowInstance workflowInstance = workflowRuntime.CreateWorkflow(type);
workflowInstance.Start();
waitHandle.WaitOne();
workflowRuntime.StopRuntime();
}
}
SQL數據庫連接語句