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我很新的wf4，但創建了一個簡單的控制檯應用程序提交，批准和拒絕功能就好了。我現在正在嘗試創建一個消耗我創建的服務的asp.net應用程序，但正在收到如下所示的錯誤異常。這在我的控制檯應用程序運行良好asp.net和wf4相關異常
The execution of an InstancePersistenceCommand was interrupted because
the instance key '3a552603-c92f-2424-085c-7b6fc1a0e98e' was not associated to
an instance
基本上香港專業教育學院創建了3個簡單的網頁。第一頁是用戶提交請求的簡單形式。第二頁僅打印請求列表。點擊其中一個請求，即可進入第3頁，該頁面通過批准和拒絕按鈕打印請求的更詳細視圖。我使用通過查詢字符串傳遞給第三頁的關聯GUID。點擊批准按鈕激發查詢字符串值中傳遞服務的批准方法。在這一點上，我得到了例外。奇怪的是在錯誤消息的GUID是不一樣的價值IM傳入。
以下任何想法是我的代碼是幫助
第1頁
protected void Unnamed1_Click(object sender, EventArgs e) {
ServiceReference1.ServiceClient Client = new ServiceReference1.ServiceClient();
ServiceReference1.Request R = new ServiceReference1.Request();
R.Title = TxtRequestTitle.Text;
R.Amount = Convert.ToInt32(TxtAmount.Text);
Guid g = Guid.NewGuid();
Client.SubmitRequest(R, g);
Response.Write("submitted");
}
第2頁
protected void Page_Load(object sender, EventArgs e) {
using (SqlConnection con = new SqlConnection(@"Data Source=bantai11\sqlexpress;Initial Catalog=RequestMonkey;Integrated Security=True;Asynchronous Processing=True")) {
using (SqlCommand com = new SqlCommand()) {
com.Connection = con;
com.CommandType = System.Data.CommandType.Text;
com.CommandText = "Select InstanceId, Title, state from Requests";
DataTable dt = new DataTable();
SqlDataAdapter sda = new SqlDataAdapter(com);
sda.Fill(dt);
rp.DataSource = dt;
rp.DataBind();
}
}
}
第3頁
protected void Page_Load(object sender, EventArgs e) {
this._id = Request.QueryString.Get("Id");
using (SqlConnection con = new SqlConnection(@"Data Source=bantai11\sqlexpress;Initial Catalog=RequestMonkey;Integrated Security=True;Asynchronous Processing=True")) {
using (SqlCommand com = new SqlCommand()) {
con.Open();
com.Connection = con;
com.CommandType = System.Data.CommandType.Text;
com.CommandText = "Select InstanceId, Title, state from Requests where instanceid = '" + this._id + "'";
SqlDataReader dr = com.ExecuteReader();
dr.Read();
lblTitle.Text = dr[1].ToString();
lblGuid.Text = dr[0].ToString();
lblAmount.Text = "0";
}
}
}
protected void btnApprove_Click(object sender, EventArgs e) {
ServiceReference1.ServiceClient Client = new ServiceReference1.ServiceClient();
Client.Approve(1, this._id);
}