[英]Insert Order to MS Access from VB6
我得到了我们用于培训管理的旧VB应用程序之一。它是用VB6编写的,数据库是MsAccess。 当我使用该应用程序时,在保存培训课程的同时,所有记录都保存在以前的记录之间(不按顺序)。 它不会被添加到最后一行。 该应用程序还从数据库中获取数据并在gridview中显示。 因此,最终的显示将以未排序的方式进行。就像我使用表单添加的最新数据一样,显示在中间行的某些位置。 当我看到数据库表时,所有新数据都添加到中间行中。 在这里,我将显示代码:
sql = "INSERT INTO TrAssignment (BatchID,Category,CourseNumber,CourseTitle,FromDate,ToDate,Duration,Location, Trainer, FixedCost,DefaultStudentCost) VALUES ('" & CStr(txtBatchid.Text) & "','" & CStr(cmbCrscategory) & "','" & CStr(sCourNo) & "', '" & CStr(sCourTitle) & "','" & SchfromDTPick.Value & "','" & SchtoDTPicker.Value & "','" & CStr(txtSchduration.Text) & "','" & cmbLocation & "','" & CStr(cmbTrainer) & "','" & CStr(Trim(txtFixedcost.Text)) & "','" & CStr(Trim(txtDefault.Text)) & "')"
rs.Open sql, conn, adOpenDynamic, adLockOptimistic
日期格式也像dd-mm-yyyy一样,对于某些记录,日期也以这种精确格式保存。 但对于某些人来说,日期格式就像d / m / yyyy。 只是他们从日期控件中获取日期,而无需格式化代码。
您的日期格式错误。 通常,您可以从此功能中受益:
' Converts a value of any type to its string representation.
' The function can be concatenated into an SQL expression as is
' without any delimiters or leading/trailing white-space.
'
' Examples:
' SQL = "Select * From TableTest Where [Amount]>" & CSql(12.5) & "And [DueDate]<" & CSql(Date) & ""
' SQL -> Select * From TableTest Where [Amount]> 12.5 And [DueDate]< #2016/01/30 00:00:00#
'
' SQL = "Insert Into TableTest ( [Street] ) Values (" & CSql(" ") & ")"
' SQL -> Insert Into TableTest ( [Street] ) Values ( Null )
'
' Trims text variables for leading/trailing Space and secures single quotes.
' Replaces zero length strings with Null.
' Formats date/time variables as safe string expressions.
' Uses Str to format decimal values to string expressions.
' Returns Null for values that cannot be expressed with a string expression.
'
' 2016-01-30. Gustav Brock, Cactus Data ApS, CPH.
'
Public Function CSql( _
ByVal Value As Variant) _
As String
Const vbLongLong As Integer = 20
Const SqlNull As String = " Null"
Dim Sql As String
Dim LongLong As Integer
#If Win32 Then
LongLong = vbLongLong
#End If
#If Win64 Then
LongLong = VBA.vbLongLong
#End If
Select Case VarType(Value)
Case vbEmpty ' 0 Empty (uninitialized).
Sql = SqlNull
Case vbNull ' 1 Null (no valid data).
Sql = SqlNull
Case vbInteger ' 2 Integer.
Sql = Str(Value)
Case vbLong ' 3 Long integer.
Sql = Str(Value)
Case vbSingle ' 4 Single-precision floating-point number.
Sql = Str(Value)
Case vbDouble ' 5 Double-precision floating-point number.
Sql = Str(Value)
Case vbCurrency ' 6 Currency.
Sql = Str(Value)
Case vbDate ' 7 Date.
Sql = Format(Value, " \#yyyy\/mm\/dd hh\:nn\:ss\#")
Case vbString ' 8 String.
Sql = Replace(Trim(Value), "'", "''")
If Sql = "" Then
Sql = SqlNull
Else
Sql = " '" & Sql & "'"
End If
Case vbObject ' 9 Object.
Sql = SqlNull
Case vbError ' 10 Error.
Sql = SqlNull
Case vbBoolean ' 11 Boolean.
Sql = Str(Abs(Value))
Case vbVariant ' 12 Variant (used only with arrays of variants).
Sql = SqlNull
Case vbDataObject ' 13 A data access object.
Sql = SqlNull
Case vbDecimal ' 14 Decimal.
Sql = Str(Value)
Case vbByte ' 17 Byte.
Sql = Str(Value)
Case LongLong ' 20 LongLong integer (Valid on 64-bit platforms only).
Sql = Str(Value)
Case vbUserDefinedType ' 36 Variants that contain user-defined types.
Sql = SqlNull
Case vbArray ' 8192 Array.
Sql = SqlNull
Case Else ' Should not happen.
Sql = SqlNull
End Select
CSql = Sql & " "
End Function
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