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我正在使用SqlDataReader
檢索數據庫信息以將其放入javascript
字符串中。我得到了SqlDataReader.HasRows=True
,如果我在不讀取數據讀取器的情況下先調用我的字符串構建,則會得到正確的字符串。如果我試圖循環讀者,沒有任何東西出來。SqlDataReader HasRows但不讀取
下面的代碼返回正確格式的字符串,但只適用於第一個記錄:
Function sFnLoadCodingLines() As String
Dim cmdCoding As SqlCommand, drCoding As SqlDataReader, con As New SqlConnection(strcon)
Dim sTemp As String = ""
Dim lInvoiceID As Long
If Not IsNumeric(CLng(Page.Request.QueryString("InvoiceID"))) Then
sFnLoadCodingLines = ""
Exit Function
End If
lInvoiceID = CLng(Page.Request.QueryString("InvoiceID"))
cmdCoding = New SqlCommand
cmdCoding.CommandText = "SELECT BU,DEPT,AccNo,Qty,Amount,Description,EMP,VARIETAL,BRAND,STATE,PROJECT " & _
"FROM OI_tblCoding WHERE isDeleted=0 AND InvoiceID=" & lInvoiceID
cmdCoding.Connection = con
con.Open()
drCoding = cmdCoding.ExecuteReader
drCoding.Read()
If drCoding.HasRows() Then
sTemp = sTemp & "addRowToTable(""" & drCoding("BU").ToString & _
""",""" & drCoding("DEPT").ToString & _
""",""" & drCoding("AccNo").ToString & _
""",""" & drCoding("Qty").ToString & _
""",""" & drCoding("Amount").ToString & _
""",""" & drCoding("Description").ToString & _
""",""" & drCoding("EMP").ToString & _
""",""" & drCoding("VARIETAL").ToString & _
""",""" & drCoding("BRAND").ToString & _
""",""" & drCoding("STATE").ToString & _
""",""" & drCoding("PROJECT").ToString & """);" & vbCrLf
sFnLoadCodingLines = sTemp
Else
sFnLoadCodingLines = ""
End If
con.Close()
End Function
下面的記錄將返回一個空字符串:
Function sFnLoadCodingLines() As String
Dim cmdCoding As SqlCommand, drCoding As SqlDataReader, con As New SqlConnection(strcon)
Dim sTemp As String = ""
Dim lInvoiceID As Long
If Not IsNumeric(CLng(Page.Request.QueryString("InvoiceID"))) Then
sFnLoadCodingLines = ""
Exit Function
End If
lInvoiceID = CLng(Page.Request.QueryString("InvoiceID"))
cmdCoding = New SqlCommand
cmdCoding.CommandText = "SELECT BU,DEPT,AccNo,Qty,Amount,Description,EMP,VARIETAL,BRAND,STATE,PROJECT " & _
"FROM OI_tblCoding WHERE isDeleted=0 AND InvoiceID=" & lInvoiceID
cmdCoding.Connection = con
con.Open()
drCoding = cmdCoding.ExecuteReader
drCoding.Read()
If drCoding.HasRows() Then
While drCoding.Read()
'addRowToTable(sBU, sDPT, sAcct, dbQty, dbAmt, sDesc, sEmp, sVar, sBrand, sState, sProj)
sTemp = sTemp & "addRowToTable(""" & drCoding("BU").ToString & _
""",""" & drCoding("DEPT").ToString & _
""",""" & drCoding("AccNo").ToString & _
""",""" & drCoding("Qty").ToString & _
""",""" & drCoding("Amount").ToString & _
""",""" & drCoding("Description").ToString & _
""",""" & drCoding("EMP").ToString & _
""",""" & drCoding("VARIETAL").ToString & _
""",""" & drCoding("BRAND").ToString & _
""",""" & drCoding("STATE").ToString & _
""",""" & drCoding("PROJECT").ToString & """);" & vbCrLf
End While
sFnLoadCodingLines = sTemp
Else
sFnLoadCodingLines = ""
End If
con.Close()
End Function
不知何故,我討厭什麼時候指出我的愚蠢......謝謝你 – nutsch
並不意味着你一直很愚蠢,堅強 - 我們都有時刻在看着我們自己的代碼後看不到明顯的東西時間過長。有時只需要一雙新鮮的眼睛,就是這樣。 – sh1rts