求指点dll在excel的加载问题
用.net编写了一个excel自定义函数，在excel中可以加载，但是加载后无法显示编写的自定义函数，有知道为什么的吗？以下附带源码：
Imports System
Imports System.Runtime.InteropServices
Imports Microsoft.Win32
<ComVisible(True)>
<ComClass(func.ClassId, func.InterfaceId, func.EventsId)> _
Public Class func
#Region "COM GUID"
' 这些 GUID 提供此类的 COM 标识
' 及其 COM 接口。若更改它们，则现有的
' 客户端将不再能访问此类。
Public Const ClassId As String = "23e87623-7bcc-4521-9b19-2c1d55877647"
Public Const InterfaceId As String = "edf21310-c4d5-4b21-a6fb-ecdd4b1bc529"
Public Const EventsId As String = "97526ac0-dd73-4744-a580-a423ad4c1199"
#End Region
' 可创建的 COM 类必须具有一个不带参数的 Public Sub New()
' 否则， 将不会在
' COM 注册表中注册此类，且无法通过
' CreateObject 创建此类。
Public Sub New()
MyBase.New()
End Sub
' 获取选中里程或桩号的设计高程，CeLiang_KM代表选中里程或者桩号, CeLiang_SQXSJK代表竖曲线数据库。
Public Function CeLiang_GC(ByVal CeLiang_KM, ByVal CeLiang_SQXSJK)
Dim KM
Dim numbersRow As Integer, i As Integer
Dim GCshujuku
Dim Y1, Y2, Y3, Y4, Y5, Y6, Y7
Y1 = ""
Y2 = ""
Y3 = ""
Y4 = ""
Y5 = ""
Y6 = ""
Y7 = ""
Dim gc1, gc2, gc3
KM = CeLiang_KM.value
numbersRow = CeLiang_SQXSJK.Rows.Count
GCshujuku = CeLiang_SQXSJK.Value
For i = 1 To numbersRow
If KM >= GCshujuku(i, 1) And KM <= GCshujuku(i, 2) Then
Y1 = GCshujuku(i, 1)
Y2 = GCshujuku(i, 2)
Y3 = GCshujuku(i, 3)
Y4 = GCshujuku(i, 4)
Y5 = GCshujuku(i, 5)
Y6 = GCshujuku(i, 6)
Y7 = GCshujuku(i, 7)
Exit For
End If
Next
gc1 = Y5 - Y6
gc2 = Math.Abs(gc1 * Y7) / 2
Y7 = Y7 * Math.Abs(gc1) / gc1
If KM <= Y4 - gc2 Then
gc3 = 0
Else
If KM >= Y4 + gc2 Then
gc3 = 0
Y5 = Y6
Else
gc3 = KM - Y4 + gc2
End If
End If
CeLiang_GC = Y3 - Y5 * (Y4 - KM) - gc3 * gc3 / 2 / Y7
CeLiang_GC = Math.Round(CeLiang_GC, 3)
Return CeLiang_GC
End Function
' 获取选中里程或桩号的坐标值及方位角，CeLiang_KM代表选中里程或者桩号,CeLiang_BianJu代表距中距离，CeLiang_PQXSJK代表竖曲线数据库。
Public Function CeLiang_ZBX(ByVal CeLiang_KM, ByVal CeLiang_BianJu, ByVal CeLiang_PQXSJK)
Dim SelectionKM
Dim SelectionBianJu
Dim SelectionZBshujuku
Dim i As Integer
SelectionKM = CeLiang_KM.value
SelectionBianJu = CeLiang_BianJu.value
SelectionZBshujuku = CeLiang_PQXSJK.value
numbersRow = CeLiang_PQXSJK.Rows.Count
For i = 1 To numbersRow
If SelectionKM >= SelectionZBshujuku(i, 1) And SelectionKM <= SelectionZBshujuku(i, 2) Then
Y1 = SelectionZBshujuku(i, 1)
Y2 = SelectionZBshujuku(i, 2)
Y3 = SelectionZBshujuku(i, 3)
Y4 = SelectionZBshujuku(i, 4)
Y5 = SelectionZBshujuku(i, 5)
Y6 = SelectionZBshujuku(i, 6)
Y7 = SelectionZBshujuku(i, 7)
Exit For
End If
Next
B = SelectionKM - Y1
Y8 = 0.5 * (1 / Y7 - 1 / Y6) / (Y2 - Y1)
Y9 = Math.PI * Y5 / 180 + B / Y6 + Y8 * B * B
CeLiang_ZBX = Y3 + QGAUS(A, B) + SelectionBianJu * Math.Cos(Y9 + Math.PI / 2)
CeLiang_ZBX = Math.Round(CeLiang_ZBX, 3)
Return CeLiang_ZBX
End Function
Public Function CeLiang_ZBY(ByVal CeLiang_KM, ByVal CeLiang_BianJu, ByVal CeLiang_PQXSJK)
Dim SelectionKM
Dim SelectionBianJu
Dim SelectionZBshujuku
Dim i As Integer
SelectionKM = CeLiang_KM.value
SelectionBianJu = CeLiang_BianJu.value
SelectionZBshujuku = CeLiang_PQXSJK.value
numbersRow = CeLiang_PQXSJK.Rows.Count
For i = 1 To numbersRow
If SelectionKM >= SelectionZBshujuku(i, 1) And SelectionKM <= SelectionZBshujuku(i, 2) Then
Y1 = SelectionZBshujuku(i, 1)
Y2 = SelectionZBshujuku(i, 2)
Y3 = SelectionZBshujuku(i, 3)
Y4 = SelectionZBshujuku(i, 4)
Y5 = SelectionZBshujuku(i, 5)
Y6 = SelectionZBshujuku(i, 6)
Y7 = SelectionZBshujuku(i, 7)
Exit For
End If
Next
B = SelectionKM - Y1
Y8 = 0.5 * (1 / Y7 - 1 / Y6) / (Y2 - Y1)
Y9 = Math.PI * Y5 / 180 + B / Y6 + Y8 * B * B
CeLiang_ZBY = Y4 + QGAUSY(A, B) + SelectionBianJu * Math.Sin(Y9 + Math.PI / 2)
CeLiang_ZBY = Math.Round(CeLiang_ZBY, 3)
Return CeLiang_ZBY
End Function
Public Function CeLiang_FWJ(ByVal CeLiang_KM, ByVal CeLiang_BianJu, ByVal CeLiang_PQXSJK)
Dim SelectionKM
Dim SelectionBianJu
Dim SelectionZBshujuku
Dim i As Integer
SelectionKM = CeLiang_KM.value
SelectionBianJu = CeLiang_BianJu.value
SelectionZBshujuku = CeLiang_PQXSJK.value
numbersRow = CeLiang_PQXSJK.Rows.Count
For i = 1 To numbersRow
If SelectionKM >= SelectionZBshujuku(i, 1) And SelectionKM <= SelectionZBshujuku(i, 2) Then
Y1 = SelectionZBshujuku(i, 1)
Y2 = SelectionZBshujuku(i, 2)
Y3 = SelectionZBshujuku(i, 3)
Y4 = SelectionZBshujuku(i, 4)
Y5 = SelectionZBshujuku(i, 5)
Y6 = SelectionZBshujuku(i, 6)
Y7 = SelectionZBshujuku(i, 7)
Exit For
End If
Next
B = SelectionKM - Y1
Y8 = 0.5 * (1 / Y7 - 1 / Y6) / (Y2 - Y1)
CeLiang_FWJ = Math.PI * Y5 / 180 + B / Y6 + Y8 * B * B
CeLiang_FWJ = CeLiang_FWJ * 180 / Math.PI
CeLiang_FWJ = Math.Round(CeLiang_FWJ, 8)
Return CeLiang_FWJ
End Function
' 已知坐标反算里程桩号及距中距离，CeLiang_KM代表选中里程或者桩号,CeLiang_BianJu代表距中距离，CeLiang_PQXSJK代表竖曲线数据库。
Public Function CeLiang_KM(ByVal CeLiang_ZBX, ByVal CeLiang_ZBY, ByVal CeLiang_PQXSJK)
Dim PolI, PolJ, KMadd, ZBX, ZBY
Dim i As Integer
SelectionKM = 0
SelectionBianJu = 0
SelectionFSX = CeLiang_ZBX.value
SelectionFSY = CeLiang_ZBY.value
SelectionZBshujuku = CeLiang_PQXSJK.value
numbersRow = CeLiang_PQXSJK.Rows.Count
Do
For i = 1 To numbersRow
If SelectionKM >= SelectionZBshujuku(i, 1) And SelectionKM <= SelectionZBshujuku(i, 2) Then
Y1 = SelectionZBshujuku(i, 1)
Y2 = SelectionZBshujuku(i, 2)
Y3 = SelectionZBshujuku(i, 3)
Y4 = SelectionZBshujuku(i, 4)
Y5 = SelectionZBshujuku(i, 5)
Y6 = SelectionZBshujuku(i, 6)
Y7 = SelectionZBshujuku(i, 7)
Exit For
End If
Next
B = SelectionKM - Y1
Y8 = 0.5 * (1 / Y7 - 1 / Y6) / (Y2 - Y1)
Y9 = Math.PI * Y5 / 180 + B / Y6 + Y8 * B * B
ZBX = Y3 + QGAUS(A, B) + SelectionBianJu * Math.Cos(Y9 + Math.PI / 2)
ZBY = Y4 + QGAUSY(A, B) + SelectionBianJu * Math.Sin(Y9 + Math.PI / 2)
PolI = Math.Sqrt(Math.Pow(ZBX - SelectionFSX, 2) + Math.Pow(ZBY - SelectionFSY, 2))
PolJ = Math.Atan((ZBY - SelectionFSY) / (ZBX - SelectionFSX + 0.000001))
KMadd = PolI * Math.Sin(Y9 - Math.PI / 2 - PolJ)
SelectionKM = SelectionKM + KMadd
Loop While KMadd > 0.001
CeLiang_KM = Math.Round(SelectionKM, 3)
Return CeLiang_KM
End Function
Public Function CeLiang_BianJu(ByVal CeLiang_ZBX, ByVal CeLiang_ZBY, ByVal CeLiang_PQXSJK)
Dim PolI, PolJ, KMadd, ZBX, ZBY
SelectionKM = 0
SelectionBianJu = 0
SelectionFSX = CeLiang_ZBX.value
SelectionFSY = CeLiang_ZBY.value
SelectionZBshujuku = CeLiang_PQXSJK.value
numbersRow = CeLiang_PQXSJK.Rows.Count
Do
For i = 1 To numbersRow
If SelectionKM >= SelectionZBshujuku(i, 1) And SelectionKM <= SelectionZBshujuku(i, 2) Then
Y1 = SelectionZBshujuku(i, 1)
Y2 = SelectionZBshujuku(i, 2)
Y3 = SelectionZBshujuku(i, 3)
Y4 = SelectionZBshujuku(i, 4)
Y5 = SelectionZBshujuku(i, 5)
Y6 = SelectionZBshujuku(i, 6)
Y7 = SelectionZBshujuku(i, 7)
Exit For
End If
Next
B = SelectionKM - Y1
Y8 = 0.5 * (1 / Y7 - 1 / Y6) / (Y2 - Y1)
Y9 = Math.PI * Y5 / 180 + B / Y6 + Y8 * B * B
ZBX = Y3 + QGAUS(A, B) + SelectionBianJu * Math.Cos(Y9 + Math.PI / 2)
ZBY = Y4 + QGAUSY(A, B) + SelectionBianJu * Math.Sin(Y9 + Math.PI / 2)
PolI = Math.Sqrt(Math.Pow(ZBX - SelectionFSX, 2) + Math.Pow(ZBY - SelectionFSY, 2))
PolJ = Math.Atan((ZBY - SelectionFSY) / (ZBX - SelectionFSX + 0.000001))
KMadd = PolI * Math.Sin(Y9 - Math.PI / 2 - PolJ)
SelectionKM = SelectionKM + KMadd
Loop While KMadd > 0.001
CeLiang_BianJu = Math.Round(PolI, 3)
Return CeLiang_BianJu
End Function
<ComRegisterFunctionAttribute()> Public Shared Sub RegisterFunction(ByVal type As Type)
Registry.ClassesRoot.CreateSubKey(GetSubKeyName(type, "Programmable"))
Dim key = Registry.ClassesRoot.OpenSubKey(GetSubKeyName(type, "InprocServer32"), True)
key.SetValue("", System.Environment.SystemDirectory + "\mscoree.dll",RegistryValueKind.String)
End Sub
<ComUnregisterFunctionAttribute()> Public Shared Sub UnregisterFunction(ByVal type As Type)
Registry.ClassesRoot.DeleteSubKey(GetSubKeyName(type, "Programmable"), False)
End Sub
Private Shared Function GetSubKeyName(ByVal type As Type, ByVal subKeyName As String) As String
return string.Format("CLSID\\{{{0}}}\\{1}", type.GUID.ToString().ToUpper(), subKeyName)
End Function
End Class
