私が現在やろうとしていることにはいくつかの問題があります：
- 顧客レコードを収集する Linq-to-SQL (DBML) は匿名型を返しますか? これにより、クエリ結果をパラメーターとして渡すことで、ページ要素の初期化を一度宣言できるメソッドを呼び出すことができなくなります。
- 関連する ID フィールドを格納することで現在のレコードをインクリメント/デクリメントするページに次/前のボタンを提供しようとしています。次に、これはポストバックし、ポストバックで押されたボタンに応じて次または前のレコードを表示します (ボタンがクリックされる前に Page_Load が常に最初に呼び出されることはわかっていますが、これにどのようにアプローチするかはわかりません)。
これまでのバックエンド コード:
DataClassesDataContext db;
string aspControlNotation = "ctl00$ContentPlaceHolder1$";
protected void Page_Load(object sender, EventArgs e)
{
db = new DataClassesDataContext((string)Session["Conn"]);
int nID = 0; //Initialise variable
string hnIDPostedVal = "";
#region If the user has not directly navigated to the page
if (!IsPostBack)
{
var queryIDInitialise = (from r in db.tblQuoteLogs
orderby r.LogDate descending
select new
{
#region Selected Fields
r.nID,
r.LogDate
#endregion
}).First();
hnID.Value = queryIDInitialise.nID.ToString();
nID = Convert.ToInt32(hnID.Value);
var query1 = (from r in db.tblQuoteLogs
where r.nID == nID
join emp in db.tblEmployees on r.QuotedBy equals emp.ID into r1
join cus in db.tblCustomers on r.luLocation equals cus.ID into r2
join qfr in db.tblQuoteFailReasons on r.ReasonForLost equals qfr.ID into r3
from x in r1.DefaultIfEmpty()
from y in r2.DefaultIfEmpty()
from z in r3.DefaultIfEmpty()
orderby r.LogDate descending
select new
{
nID = r.nID,
Quote_Reference = r.Quote_Reference,
Validity = r.Validity,
TMF = r.TMF,
QuotedBy = r.QuotedBy,
EnteredBy = r.EnteredBy,
LogDate = r.LogDate,
luCustomer = r.luCustomer,
luLocation = r.luLocation,
txtContact = r.txtContact,
txtTelephone = r.txtTelephone,
POO = r.POO,
POL = r.POL,
POD = r.POD,
FPOD = r.FPOD,
txtEquipmentType = r.txtEquipmentType,
txtCommodity = r.txtCommodity,
NamedAcct = r.NamedAcct,
Cross_Trade = r.Cross_Trade,
Haz = r.Haz,
Break_Bulk = r.Break_Bulk,
Reefer = r.Reefer,
txtTargetTEU = r.txtTargetTEU,
Frequency = r.Frequency,
FollowUpDueDate = r.FollowUpDueDate,
UKSalesComments = r.UKSalesComments,
Secured = r.Secured,
Lost = r.Lost,
txtLostQuoteReasons = z.txtLostQuoteReasons,
dateOfFollowUp = r.dateOfFollowUp,
txtSalesPerson = x.txtSalesPerson, //Gets ID from the QuotedBy column to get the particular sales person name
txtLocation = y.txtLocation //Gets ID from the luLocation column to get the particular location
}).First();
//Initialise Page Elements (With Checks for null fields)
txtQuoteRef.Text = (!String.IsNullOrEmpty(query1.Quote_Reference)) ? query1.Quote_Reference : "No Data";
txtValidity.Text = (query1.Validity != null) ? query1.Validity.ToString() : "No Date";
lblEnteredByVal.Text = (!String.IsNullOrEmpty(query1.EnteredBy)) ? query1.EnteredBy : "No Data";
lblLogDateVal.Text = (query1.LogDate != null) ? query1.LogDate.ToString() : "No Date";
txtCustomer.Text = (!String.IsNullOrEmpty(query1.luCustomer)) ? query1.luCustomer : "No Data";
txtLocation.Text = (!String.IsNullOrEmpty(query1.txtLocation)) ? query1.txtLocation : "No Data"; //BUGGY DUE TO NULL ENTRIES
txtContact.Text = (!String.IsNullOrEmpty(query1.txtContact)) ? query1.txtContact : "No Data";
txtTelephone.Text = (!String.IsNullOrEmpty(query1.txtTelephone)) ? query1.txtTelephone : "No Data";
txtPOO.Text = (!String.IsNullOrEmpty(query1.POO)) ? query1.POO : "No Data";
txtPOL.Text = (!String.IsNullOrEmpty(query1.POL)) ? query1.POL : "No Data";
txtPOD.Text = (!String.IsNullOrEmpty(query1.POD)) ? query1.POD : "No Data";
txtFPOD.Text = (!String.IsNullOrEmpty(query1.FPOD)) ? query1.FPOD : "No Data";
txtEquipmentType.Text = (!String.IsNullOrEmpty(query1.txtEquipmentType)) ? query1.txtEquipmentType : "No Data";
txtCommodity.Text = (!String.IsNullOrEmpty(query1.txtCommodity)) ? query1.txtCommodity : "No Data";
txtNamedAccount.Text = (!String.IsNullOrEmpty(query1.NamedAcct)) ? query1.NamedAcct : "No Data";
chkCrossTrade.Checked = (query1.Cross_Trade != null) ? query1.Cross_Trade.Value : false;
chkHaz.Checked = (query1.Haz != null) ? query1.Haz.Value : false;
chkBreakBulk.Checked = (query1.Break_Bulk != null) ? query1.Break_Bulk.Value : false;
chkReefer.Checked = (query1.Reefer != null) ? query1.Reefer.Value : false;
txtTargetTEU.Text = (!String.IsNullOrEmpty(query1.txtTargetTEU)) ? query1.txtTargetTEU : "No Data";
txtFrequency.Text = (!String.IsNullOrEmpty(query1.Frequency)) ? query1.Frequency : "No Data";
txtFollowUpTarget.Text = (query1.FollowUpDueDate != null) ? query1.FollowUpDueDate.ToString() : "No Date";
txtUKSalesComments.Text = (!String.IsNullOrEmpty(query1.UKSalesComments)) ? query1.UKSalesComments : "";
chkSecured.Checked = (query1.Secured != null) ? query1.Secured.Value : false;
chkLost.Checked = (query1.Lost != null) ? query1.Lost.Value : false;
txtReasonForLost.Text = (!String.IsNullOrEmpty(query1.txtLostQuoteReasons)) ? query1.txtLostQuoteReasons : "";
#region Get current users' login name and strip it down
string loggedUName = WindowsIdentity.GetCurrent().Name.ToString();
lblFollowedUpByVal.Text = loggedUName.Substring(loggedUName.IndexOf('\\') + 1);
#endregion
lblFollowedUpDateVal.Text = (query1.dateOfFollowUp != null) ? query1.dateOfFollowUp.ToString() : "No Date";
#endregion
#region Drop down box initilisations
#region TMFddl
string[] ddlTMFValues = new string[] { "", "Target", "Maintenance", "Fishing", "Unqualified", "NOT COMPLETE" };
foreach (string val in ddlTMFValues)
{
ddlTMF.Items.Add(val);
}
ddlTMF.SelectedValue = query1.TMF.ToString();
#endregion
#region Quoted By ddl
#region ddlQuotedByQuery
var ddlQuotedByQuery = (from r in db.tblEmployees
where !r.txtSalesPerson.ToUpper().Contains("(")
select new
{
r.ID,
r.txtSalesPerson
}).Distinct().ToList();
#endregion
#region DDL Value Assignment
ddlQuotedBy.DataSource = ddlQuotedByQuery;
ddlQuotedBy.DataTextField = "txtSalesPerson";
ddlQuotedBy.DataValueField = "ID";
ddlQuotedBy.DataBind();
ddlQuotedBy.SelectedValue = query1.QuotedBy.ToString();
#endregion
#endregion
//ddlCustomer
//ddlLocation
#endregion
}
else
{
NameValueCollection nvc = Request.Form;
hnIDPostedVal = nvc[aspControlNotation + "hnID"];
nID = Convert.ToInt32(hnIDPostedVal);
var query1 = (from r in db.tblQuoteLogs
where (r.nID == nID)
join emp in db.tblEmployees on r.QuotedBy equals emp.ID into r1
join cus in db.tblCustomers on r.luLocation equals cus.ID into r2
join qfr in db.tblQuoteFailReasons on r.ReasonForLost equals qfr.ID into r3
from x in r1.DefaultIfEmpty()
from y in r2.DefaultIfEmpty()
from z in r3.DefaultIfEmpty()
orderby r.LogDate descending
select new
{
#region Selected Fields
nID = r.nID,
Quote_Reference = r.Quote_Reference,
Validity = r.Validity,
TMF = r.TMF,
QuotedBy = r.QuotedBy,
EnteredBy = r.EnteredBy,
LogDate = r.LogDate,
luCustomer = r.luCustomer,
luLocation = r.luLocation,
txtContact = r.txtContact,
txtTelephone = r.txtTelephone,
POO = r.POO,
POL = r.POL,
POD = r.POD,
FPOD = r.FPOD,
txtEquipmentType = r.txtEquipmentType,
txtCommodity = r.txtCommodity,
NamedAcct = r.NamedAcct,
Cross_Trade = r.Cross_Trade,
Haz = r.Haz,
Break_Bulk = r.Break_Bulk,
Reefer = r.Reefer,
txtTargetTEU = r.txtTargetTEU,
Frequency = r.Frequency,
FollowUpDueDate = r.FollowUpDueDate,
UKSalesComments = r.UKSalesComments,
Secured = r.Secured,
Lost = r.Lost,
txtLostQuoteReasons = z.txtLostQuoteReasons,
dateOfFollowUp = r.dateOfFollowUp,
txtSalesPerson = x.txtSalesPerson, //Gets ID from the QuotedBy column to get the particular sales person name
txtLocation = y.txtLocation //Gets ID from the luLocation column to get the particular location
#endregion
}).First();
//pageInitialisation(query1); //THIS IS WHERE I WAS GOING TO PASS THE QUERY FOR PAGE ELEMENT INITIALISATION BUT ANONYMOUS TYPE ERROR STOPS ME
#region Initialise Page Elements (With Checks for null fields)
txtQuoteRef.Text = (!String.IsNullOrEmpty(query1.Quote_Reference)) ? query1.Quote_Reference : "No Data";
txtValidity.Text = (query1.Validity != null) ? query1.Validity.ToString() : "No Date";
//txtTMF.Text = (!String.IsNullOrEmpty(query1.TMF)) ? query1.TMF: "No Data";
//txtQuotedBy.Text = (!String.IsNullOrEmpty(query1.txtSalesPerson)) ? query1.txtSalesPerson : "No Data"; //BUGGY DUE TO NULL ENTRIES
lblEnteredByVal.Text = (!String.IsNullOrEmpty(query1.EnteredBy)) ? query1.EnteredBy : "No Data";
lblLogDateVal.Text = (query1.LogDate != null) ? query1.LogDate.ToString() : "No Date";
txtCustomer.Text = (!String.IsNullOrEmpty(query1.luCustomer)) ? query1.luCustomer : "No Data";
txtLocation.Text = (!String.IsNullOrEmpty(query1.txtLocation)) ? query1.txtLocation : "No Data"; //BUGGY DUE TO NULL ENTRIES
txtContact.Text = (!String.IsNullOrEmpty(query1.txtContact)) ? query1.txtContact : "No Data";
txtTelephone.Text = (!String.IsNullOrEmpty(query1.txtTelephone)) ? query1.txtTelephone : "No Data";
txtPOO.Text = (!String.IsNullOrEmpty(query1.POO)) ? query1.POO : "No Data";
txtPOL.Text = (!String.IsNullOrEmpty(query1.POL)) ? query1.POL : "No Data";
txtPOD.Text = (!String.IsNullOrEmpty(query1.POD)) ? query1.POD : "No Data";
txtFPOD.Text = (!String.IsNullOrEmpty(query1.FPOD)) ? query1.FPOD : "No Data";
txtEquipmentType.Text = (!String.IsNullOrEmpty(query1.txtEquipmentType)) ? query1.txtEquipmentType : "No Data";
txtCommodity.Text = (!String.IsNullOrEmpty(query1.txtCommodity)) ? query1.txtCommodity : "No Data";
txtNamedAccount.Text = (!String.IsNullOrEmpty(query1.NamedAcct)) ? query1.NamedAcct : "No Data";
chkCrossTrade.Checked = (query1.Cross_Trade != null) ? query1.Cross_Trade.Value : false;
chkHaz.Checked = (query1.Haz != null) ? query1.Haz.Value : false;
chkBreakBulk.Checked = (query1.Break_Bulk != null) ? query1.Break_Bulk.Value : false;
chkReefer.Checked = (query1.Reefer != null) ? query1.Reefer.Value : false;
txtTargetTEU.Text = (!String.IsNullOrEmpty(query1.txtTargetTEU)) ? query1.txtTargetTEU : "No Data";
txtFrequency.Text = (!String.IsNullOrEmpty(query1.Frequency)) ? query1.Frequency : "No Data";
txtFollowUpTarget.Text = (query1.FollowUpDueDate != null) ? query1.FollowUpDueDate.ToString() : "No Date";
txtUKSalesComments.Text = (!String.IsNullOrEmpty(query1.UKSalesComments)) ? query1.UKSalesComments : "";
chkSecured.Checked = (query1.Secured != null) ? query1.Secured.Value : false;
chkLost.Checked = (query1.Lost != null) ? query1.Lost.Value : false;
txtReasonForLost.Text = (!String.IsNullOrEmpty(query1.txtLostQuoteReasons)) ? query1.txtLostQuoteReasons : "";
#region Get current users' login name and strip it down
string loggedUName = WindowsIdentity.GetCurrent().Name.ToString();
lblFollowedUpByVal.Text = loggedUName.Substring(loggedUName.IndexOf('\\') + 1);
#endregion
lblFollowedUpDateVal.Text = (query1.dateOfFollowUp != null) ? query1.dateOfFollowUp.ToString() : "No Date";
#endregion
#region Drop down box initilisations
#region TMFddl
string[] ddlTMFValues = new string[] { "", "Target", "Maintenance", "Fishing", "Unqualified", "NOT COMPLETE" };
foreach (string val in ddlTMFValues)
{
ddlTMF.Items.Add(val);
}
ddlTMF.SelectedValue = query1.TMF.ToString();
#endregion
//ddlQuotedByQuery which populates drop down list
var ddlQuotedByQuery = (from r in db.tblEmployees
where !r.txtSalesPerson.ToUpper().Contains("(")
select new
{
r.ID,
r.txtSalesPerson
}).Distinct().ToList();
ddlQuotedBy.DataSource = ddlQuotedByQuery;
ddlQuotedBy.DataTextField = "txtSalesPerson";
ddlQuotedBy.DataValueField = "ID";
ddlQuotedBy.DataBind();
ddlQuotedBy.SelectedValue = query1.QuotedBy.ToString();
#endregion
#endregion
//ddlCustomer
//ddlLocation
#endregion
}
#endregion
}
protected void btnNext_Click(object sender, EventArgs e)
{
db = new DataClassesDataContext((string)Session["Conn"]);
int nID = Convert.ToInt32(hnID.Value);
//inverted to work correctly due to query ordering
var queryNext = (from r in db.tblQuoteLogs
where r.nID < nID
orderby r.nID descending
select new
{
r.nID
});
if (queryNext.Count() > 0)
{
hnID.Value = queryNext.Select(o => o.nID).First().ToString();
Response.Redirect("~/QuoteInformation/Default.aspx");
}
}
protected void btnPrevious_Click(object sender, EventArgs e)
{
//db = new DataClassesDataContext((string)Session["Conn"]);
//int nID = Convert.ToInt32(hnID.Value);
////inverted to work correctly due to query ordering
//var queryPrevious = (from r in db.tblQuoteLogs
// where r.nID > nID
// orderby r.nID ascending
// select new
// {
// r.nID
// });
//if (queryPrevious.Count() > 0)
//{
// hnID.Value = queryPrevious.Select(o => o.nID).First().ToString();
// Response.Redirect("~/QuoteInformation/Default.aspx?nID=" + hnID.Value);
//}
}
非常に途切れ途切れのコードで申し訳ありません:s、しかし、いくつかの助けをいただければ幸いです:)。