我是能看到初始进入的页面，但是输入账号密码就会出现那个提示了。为什么？

Question

Private Sub cmdOk_Click()
UserName = "sa"
If Trim(txtUserName.Text = "") Then
MsgBox "没有这个用户，请重新输入用户名！", vbOKOnly + vbExclamation, "警告"
txtUserName.SetFocus

Else
sql = "select * from userpwd where U_name = " & "'" & txtUserName.Text & "'"
Set rs = ExecuteSQL(sql, msgtxt)
If rs.EOF = True Then （这里出了问题）
MsgBox "没有这个用户，请重新输入用户名!", vbOKOnly + vbExclamation, "警告"
txtUserName.SetFocus
Else
If Trim(rs.Fields(1)) = Trim(txtPassword.Text) Then
OK = True
UserName = Trim(txtUserName.Text)
UserPass = Trim(txtPassword.Text)
rs.Close
Me.Hide

Else
MsgBox "输入密码不正确，请重新输入！", vbOKOnly + vbExclamation, "警告"
txtPassword.SetFocus
txtPassword.Text = ""
End If
End If
End If

ExecuteSQL函数
Public Function ExecuteSQL(ByVal sql _
As String, MsgString As String) _
As ADODB.Recordset
'executes SQL and returns Recordset
Dim cnn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim sTokens() As String

On Error GoTo ExecuteSQL_Error

sTokens = Split(sql)
Set cnn = New ADODB.Connection
cnn.Open ConnectString
If InStr("INSERT,DELETE,UPDATE,EXECUTE", _
UCase$(sTokens(0))) Then
cnn.Execute (sql)
MsgString = sTokens(0) & _
" query successful"
Else
Set rst = New ADODB.Recordset
rst.Open Trim$(sql), cnn, _
adOpenKeyset, _
adLockOptimistic
'rst.MoveLast 'get RecordCount
Set ExecuteSQL = rst
MsgString = "查询到" & rst.RecordCount & _
" 条记录 "
End If
ExecuteSQL_Exit:
Set rst = Nothing
Set cnn = Nothing
Exit Function

ExecuteSQL_Error:
MsgString = "查询错误: " & _
Err.Description
Resume ExecuteSQL_Exit
End Function

我也不会调试。据说是VB If mrc.EOF = True Then 实时错误 91 据说ExecuteSQL函数出问题，可以帮我改下么。谢谢你，很急~

Answer 1

将出问题的地方按下面修改：If rs.RecordCount = 0 ThenMsgBox "没有这个用户，请重新输入用户名rs.EOF是记录集的结束标记

Answer 2

Dim w_s As String, w_d As String, sp() As StringFunction cc()Dim i As Integerw_s = "a,b,c,d,e,f,g,h"sp = Split(w_s, ",", -1)For i = LBound(sp) To UBound(sp)MsgBox sp(i)NextEnd FunctionPrivate Sub Command1_Click()Call ccEnd Sub