1. vb.net 读取/写入文件

参考地址： http://www.jb51.net/article/15531.htm
主要是需要借助System.IO 的 streamReader 和 streamWriter 方法， 实现文件的读取和写入

文件写入

StandardExpoSettingPath = "D:\\LinLan\\standard_expo_setting.ini"
   Dim writer2 As StreamWriter = New StreamWriter(StandardExpoSettingPath,False)
   str = CStr(light_upper) + vbTab + CStr(light_lower) + vbTab + CStr(dark_upper) + vbTab + CStr(dark_lower)
   writer2.WriteLine(str)
   writer2.Flush()
   writer2.Close()
   writer2 = Nothing

文件读取

Try
      Dim reader6 As StreamReader
      reader6 = File.OpenText(PaituPath)
      Dim str As String
      str = reader6.ReadLine()
      If str = "No" Then
          will_do_next.Checked = False
      Else
          will_do_next.Checked = True
      End If
      reader6.Close()
  Catch ex As Exception
  End Try

2. 实现效果

3. 工程地址

https://code.csdn.net/zhyh1435589631/lab_camera_setting_ui/tree/master

4. 实现代码

Imports System.IO

Public Class Form1
    ' 自动曝光度调节
    Dim AutoExpoSettingPath As String
    Dim left_low_value As Integer
    Dim left_high_value As Integer
    Dim right_low_value As Integer
    Dim right_high_value As Integer
    Dim left_gap_value As Integer
    Dim right_gap_value As Integer

    ' 标准参数调节
    Dim StandardExpoSettingPath As String
    Dim light_upper As Integer
    Dim light_lower As Integer
    Dim dark_upper As Integer
    Dim dark_lower As Integer

    ' 解码算点
    Dim WmatrixPath As String
    Dim AsPath As String
    Dim k3rPath As String
    Dim PaituPath As String

    Private Sub TB_left_low_TextChanged(sender As Object,e As EventArgs) Handles TB_left_low.TextChanged
        Try
            left_low_value = CInt(TB_left_low.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_left_high_TextChanged(sender As Object,e As EventArgs) Handles TB_left_high.TextChanged
        Try
            left_high_value = CInt(TB_left_high.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_right_low_TextChanged(sender As Object,e As EventArgs) Handles TB_right_low.TextChanged
        Try
            right_low_value = CInt(TB_right_low.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_right_high_TextChanged(sender As Object,e As EventArgs) Handles TB_right_high.TextChanged
        Try
            right_high_value = CInt(TB_right_high.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_left_gap_TextChanged(sender As Object,e As EventArgs) Handles TB_left_gap.TextChanged
        Try
            left_gap_value = CInt(TB_left_gap.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_right_gap_TextChanged(sender As Object,e As EventArgs) Handles TB_right_gap.TextChanged
        Try
            right_gap_value = CInt(TB_right_gap.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub OK_Click(sender As Object,e As EventArgs) Handles OK.Click
        ' 自动曝光度调节部分
        AutoExpoSettingPath = "D:\\LinLan\\auto_expo_setting.ini"
        Dim writer As StreamWriter = New StreamWriter(AutoExpoSettingPath,False)
        Dim str As String
        str = CStr(left_low_value) + vbTab + CStr(left_high_value) + vbTab + CStr(right_low_value) + vbTab + CStr(right_high_value) + vbTab + CStr(left_gap_value) + vbTab + CStr(right_gap_value)
        writer.WriteLine(str)
        writer.Flush()
        writer.Close()
        writer = Nothing

        ' 标准参数配置
        StandardExpoSettingPath = "D:\\LinLan\\standard_expo_setting.ini"
        Dim writer2 As StreamWriter = New StreamWriter(StandardExpoSettingPath,False)
        str = CStr(light_upper) + vbTab + CStr(light_lower) + vbTab + CStr(dark_upper) + vbTab + CStr(dark_lower)
        writer2.WriteLine(str)
        writer2.Flush()
        writer2.Close()
        writer2 = Nothing

        '解码算点
        PaituPath = "D:\\LinLan\\paitu.ini"
        Dim writer3 As StreamWriter = New StreamWriter(PaituPath,False)
        Dim checked As Boolean
        checked = will_do_next.Checked
        If checked Then
            str = "Yes"
        Else
            str = "No"
        End If
        writer3.WriteLine(str)
        writer3.Flush()
        writer3.Close()
        writer3 = Nothing

        Close()
    End Sub

    Private Sub Form1_Load(sender As Object,e As EventArgs) Handles MyBase.Load
        ' 自动曝光度参数调节
        AutoExpoSettingPath = "D:\\LinLan\\auto_expo_setting.ini"
        Dim arr_str As String()
        Dim reader As StreamReader
        Try
            reader = File.OpenText(AutoExpoSettingPath)
            Dim str As String
            str = reader.ReadLine()
            arr_str = str.Split()
            reader.Close()
        Catch ex As Exception
            arr_str = {"0","0","0"}
        End Try

        TB_left_low.Text = arr_str(0)
        TB_left_high.Text = arr_str(1)
        TB_right_low.Text = arr_str(2)
        TB_right_high.Text = arr_str(3)
        TB_left_gap.Text = arr_str(4)
        TB_right_gap.Text = arr_str(5)


        ' 标准参数配置
        StandardExpoSettingPath = "D:\\LinLan\\standard_expo_setting.ini"
        Dim stand_arr_str As String()
        Try
            Dim reader2 As StreamReader
            reader2 = File.OpenText(StandardExpoSettingPath)
            Dim str As String
            str = reader2.ReadLine()
            stand_arr_str = str.Split()
            reader2.Close()
        Catch ex As Exception
            stand_arr_str = {"0","0"}
        End Try

        TB_light_upper.Text = stand_arr_str(0)
        TB_light_low.Text = stand_arr_str(1)
        TB_dark_high.Text = stand_arr_str(2)
        TB_dark_low.Text = stand_arr_str(3)

        ' 解码算点
        WmatrixPath = "D:\\LinLan\\wmatrix.ini"
        AsPath = "D:\\LinLan\\as.ini"
        k3rPath = "D:\\LinLan\\k3r.ini"

        Try
            Dim reader3 As StreamReader
            reader3 = File.OpenText(WmatrixPath)
            TB_Wmatrix.Text = reader3.ReadLine()
            reader3.Close()

            Dim reader4 As StreamReader
            reader4 = File.OpenText(AsPath)
            TB_As_k3r.Text = reader4.ReadLine()
            reader4.Close()

            Dim reader5 As StreamReader
            reader5 = File.OpenText(k3rPath)
            TB_k3r.Text = reader5.ReadLine()
            reader5.Close()
        Catch ex As Exception
        End Try

        PaituPath = "D:\\LinLan\\paitu.ini"
        Try
            Dim reader6 As StreamReader
            reader6 = File.OpenText(PaituPath)
            Dim str As String
            str = reader6.ReadLine()
            If str = "No" Then
                will_do_next.Checked = False
            Else
                will_do_next.Checked = True
            End If
            reader6.Close()
        Catch ex As Exception
        End Try

    End Sub

    Private Sub TB_light_upper_TextChanged(sender As Object,e As EventArgs) Handles TB_light_upper.TextChanged
        Try
            light_upper = CInt(TB_light_upper.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_light_low_TextChanged(sender As Object,e As EventArgs) Handles TB_light_low.TextChanged
        Try
            light_lower = CInt(TB_light_low.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_dark_high_TextChanged(sender As Object,e As EventArgs) Handles TB_dark_high.TextChanged
        Try
            dark_upper = CInt(TB_dark_high.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_dark_low_TextChanged(sender As Object,e As EventArgs) Handles TB_dark_low.TextChanged
        Try
            dark_lower = CInt(TB_dark_low.Text.ToString)
        Catch ex As Exception

        End Try
    End Sub

    Private Sub TB_Wmatrix_MouseDoubleClick(sender As Object,e As MouseEventArgs) Handles TB_Wmatrix.MouseDoubleClick
        WmatrixPath = "D:\\LinLan\\wmatrix.ini"
        OpenWmatrix.InitialDirectory = "C:\"
        OpenWmatrix.Filter = "txt files (*.txt) | *.txt | All files (*.*)|*.*"
        OpenWmatrix.FilterIndex = 2
        OpenWmatrix.RestoreDirectory = True
        If OpenWmatrix.ShowDialog() = DialogResult.OK Then
            TB_Wmatrix.Text = OpenWmatrix.FileName()

            Dim writer As StreamWriter = New StreamWriter(WmatrixPath,False)
            Dim str As String
            str = TB_Wmatrix.Text
            writer.WriteLine(str)
            writer.Flush()
            writer.Close()
            writer = Nothing
        End If
    End Sub

    Private Sub TB_As_k3r_MouseDoubleClick(sender As Object,e As MouseEventArgs) Handles TB_As_k3r.MouseDoubleClick
        AsPath = "D:\\LinLan\\as.ini"
        OpenAs.InitialDirectory = "C:\"
        OpenAs.Filter = "txt files (*.txt) | *.txt | All files (*.*)|*.*"
        OpenAs.FilterIndex = 2
        OpenAs.RestoreDirectory = True
        If OpenAs.ShowDialog() = DialogResult.OK Then
            TB_As_k3r.Text = OpenAs.FileName()

            Dim writer As StreamWriter = New StreamWriter(AsPath,False)
            Dim str As String
            str = TB_As_k3r.Text
            writer.WriteLine(str)
            writer.Flush()
            writer.Close()
            writer = Nothing
        End If
    End Sub

    Private Sub TB_k3r_MouseDoubleClick(sender As Object,e As MouseEventArgs) Handles TB_k3r.MouseDoubleClick
        k3rPath = "D:\\LinLan\\k3r.ini"
        Openk3r.InitialDirectory = "C:\"
        Openk3r.Filter = "txt files (*.txt) | *.txt | All files (*.*)|*.*"
        Openk3r.FilterIndex = 2
        Openk3r.RestoreDirectory = True
        If Openk3r.ShowDialog() = DialogResult.OK Then
            TB_k3r.Text = Openk3r.FileName()

            Dim writer As StreamWriter = New StreamWriter(k3rPath,False)
            Dim str As String
            str = TB_k3r.Text
            writer.WriteLine(str)
            writer.Flush()
            writer.Close()
            writer = Nothing
        End If
    End Sub
End Class