Linq，數據表和共享屬性

我正在嘗試執行此linq查詢，但在編碼時出現「EmpCritGID無法初始化，因爲它是共享的」錯誤。什麼是正確的方式來查詢數據表和填充現有類中的值與共享屬性用於vb.net代碼後面？Linq，數據表和共享屬性

 

    If CriteriaFlags.CritOrgFlag AndAlso lblOrgName.Text.Equals(String.Empty) Then 
     lblOrgName.Text = "Need Org Assigned" 
     lblOrgName.ForeColor = redColor 
     lblOrgName.BackColor = yellowColor 
    End If 

    Dim result = From c In EmployeeJobCriteria.AsEnumerable() 
     Where c.Field(Of Integer)("EmpCritGID").Equals(intEmpCritGID) 
     Select New EmployeeCriteria.CriteriaFlags _ 
     With {.EmpCritGID = c.Field(Of Integer)("EmpCritGID"), _ 
     .EmpJobFID = c.Field(Of Integer)("EmpJobFID"), _ 
     .CritFID = c.Field(Of Integer)("CritFID"), _ 
     .NodeGID = c.Field(Of Integer)("NodeGID"), _ 
     .CritOrgFlag = c.Field(Of Boolean)("CritOrgFlag"), _ 
     .CritWeightFlag = c.Field(Of Boolean)("CritWeightFlag"), _ 
     .CritOppFlag = c.Field(Of Boolean)("CritOppFlag"), _ 
     .CritActFlag = c.Field(Of Boolean)("CritActFlag")} 

    Namespace Objective 

     Public Class EmployeeCriteria 

      Public Class CriteriaFlags 

       Public Shared EmpCritGID As Integer 
       Public Shared EmpJobFID As Integer 
       Public Shared CritFID As Integer 
       Public Shared NodeGID As Integer 
       Public Shared CritOrgFlag As Boolean 
       Public Shared ShareCritPmtFlag As Boolean 
       Public Shared CritWeightFlag As Boolean 
       Public Shared CritOppFlag As Boolean 
       Public Shared CritActFlag As Boolean 

      End Class 

     End Class 

    End Namespace

來源

2012-08-28 webapparchitect

刪除Shared關鍵字。

Public Class CriteriaFlags 

    Public EmpCritGID As Integer 
    Public EmpJobFID As Integer 
    Public CritFID As Integer 
    Public NodeGID As Integer 
    Public CritOrgFlag As Boolean 
    Public ShareCritPmtFlag As Boolean 
    Public CritWeightFlag As Boolean 
    Public CritOppFlag As Boolean 
    Public CritActFlag As Boolean 

End Class

通過設置共享（靜態）變量或屬性來初始化對象是沒有意義的。無論如何他們會分享所有的價值。

http://visualbasic.about.com/od/learnvbnet/a/sharedinstance.htm

來源

2012-08-28 22:13:01

所以，我假設你會初始化類的row_databound功能，我需要它？ – webapparchitect

另外，我會使用初始化變量objEmpCritFlag作爲新的EmployeeCriteria.CriteriaFlags並在LINQ中使用objEmpCritFlag？ – webapparchitect

我不知道你在哪裏需要它，這根本就沒有關係。您應該將初始化添加到linq查詢的選擇中（它已經在哪裏）。當你執行查詢時，CriteriaFlags對象將被創建和初始化。你使用變量的地方取決於上下文。您可以鏈接linq查詢，在某處調用ToList或ToArray，使用For Each或將其用作DataSource。但這不在這個問題的範圍之內。如果他們有幫助，請記得接受/提出答案。 http://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work –

Linq，數據表和共享屬性

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