vb.net读写ini文件问题

Public Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Integer, ByVal lpFileName As String) As Integer

Public Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpString As String, ByVal lpFileName As String) As Integer

写:

WritePrivateProfileString("存储", "账号", textbox1, Application.StartupPath &"\song.ini")

读:

dim s as string

s = string(255," ")

GetPrivateProfileString("存储", "账号", s, s.Length, Application.StartupPath + "\song.ini")

textbox1 =s

  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Dim path As String

        path = Application.StartupPath + "\Send.ini"

        TextBox1.Text = GetINI("Send", "Send1", "", path)

        TextBox2.Text = GetINI("Send", "Send2", "", path)

        Dim IsSms As Integer = GetINI("Send", "IsSms", "", path)

        If (IsSms = 1) Then

            Me.RadioButton1.Checked = True

        ElseIf (IsSms = 0) Then

            Me.RadioButton2.Checked = True

        End If

    End Sub

    Public Function GetINI(ByVal Section As String, ByVal AppName As String, ByVal lpDefault As String, ByVal FileName As String) As String

        Dim Str As String = LSet(Str, 256)

        GetPrivateProfileString(Section, AppName, lpDefault, Str, Len(Str), FileName)

        Return Microsoft.VisualBasic.Left(Str, InStr(Str, Chr(0)) - 1)

    End Function

    Public Function WriteINI(ByVal Section As String, ByVal AppName As String, ByVal lpDefault As String, ByVal FileName As String) As Long

        WriteINI = WritePrivateProfileString(Section, AppName, lpDefault, FileName)

    End Function

    Private Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Int32, ByVal lpFileName As String) As Int32

    Private Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpString As String, ByVal lpFileName As String) As Int32

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Try

            Dim path As String

            path = Application.StartupPath + "\Send.ini"

            WriteINI("Send", "Send1", TextBox1.Text, path)

            WriteINI("Send", "Send2", TextBox2.Text, path)

            If (Me.RadioButton1.Checked = True) Then

                WriteINI("Send", "IsSms", 1, path)

            ElseIf (Me.RadioButton2.Checked = True) Then

                WriteINI("Send", "IsSms", 0, path)

            End If

            MsgBox("配置设置已经成功！！！！")

        Catch ex As Exception

            MsgBox("错误！！！！")

        End Try

    End Sub