dbcustomaction.vb

实现485串口通信的一个小例子！能读取我们公司的二次压降检测仪的数据。

Imports System.ComponentModel
Imports System.Configuration.Install
Imports System.IO
Imports System.Reflection

Public Class DBCustomAction
    Inherits System.Configuration.Install.Installer

    Public Sub New()
        MyBase.New()

        '组件设计器需要此调用。
        InitializeComponent()

        '调用 InitializeComponent 后添加初始化代码

    End Sub
   
    'Private Sub ExecuteSql(ByVal conn As String, ByVal DatabaseName As String, ByVal Sql As String)

    '    Dim mySqlConnection As New SqlClient.SqlConnection(conn)

    '    Dim Command As New SqlClient.SqlCommand(Sql, mySqlConnection)

    '    Command.Connection.Open()

    '    Command.Connection.ChangeDatabase(databasename)

    '    Try

    '        Command.ExecuteNonQuery()

    '    Finally

    '        'close Connection

    '        Command.Connection.Close()

    '    End Try

    'End Sub
    Public Overrides Sub Install(ByVal stateSaver As System.Collections.IDictionary)
        MyBase.Install(stateSaver)

        ' ------------------------建立数据库-------------------------------------------------
        Try
            Dim MyProcess As Process = New Process()
            MyProcess.StartInfo.FileName = "InstallDB.msi"
            MyProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
            MyProcess.Start()
            MyProcess.WaitForExit() '等待程序执行
            MyProcess.Close()


            '    Dim connStr As String = String.Format("data source={0};user id={1};password={2};persist security info=false;packet size=4096", Me.Context.Parameters.Item("server"), Me.Context.Parameters.Item("user"), Me.Context.Parameters.Item("pwd"))

            '    '根据输入的数据库名称建立数据库

            '    ExecuteSql(connStr, "master", "CREATE DATABASE " + Me.Context.Parameters.Item("dbname"))

            '    '调用osql执行脚本

            '    Dim sqlProcess As New System.Diagnostics.Process

            '    sqlProcess.StartInfo.FileName = "osql.exe "

            '    sqlProcess.StartInfo.Arguments = String.Format(" -U {0} -P {1} -d {2} -i {3}db.sql", Me.Context.Parameters.Item("user"), Me.Context.Parameters.Item("pwd"), Me.Context.Parameters.Item("dbname"), Me.Context.Parameters.Item("targetdir"))

            '    sqlProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden

            '    sqlProcess.Start()

            '    sqlProcess.WaitForExit() '等待执行

            '    sqlProcess.Close()

            '    '删除脚本文件

            '    Dim sqlFileInfo As New System.IO.FileInfo(String.Format("{0}db.sql", Me.Context.Parameters.Item("targetdir")))

            '    If sqlFileInfo.Exists Then

            '        sqlFileInfo.Delete()

            '    End If

        Catch ex As Exception

            Throw ex

        End Try
        '---------------------将连接字符串写入Web.config-----------------------------------

        Try

            Dim FileInfo As System.IO.FileInfo = New System.IO.FileInfo(Me.Context.Parameters.Item("targetdir") & "\PortRead.exe.config")
            If Not FileInfo.Exists Then

                Throw New InstallException("没有找到配置文件")

            End If
            '实例化xml文档

            Dim XmlDocument As New System.Xml.XmlDocument

            XmlDocument.Load(FileInfo.FullName)

            '查找到appsettings中的节点

            Dim Node As System.Xml.XmlNode

            Dim FoundIt As Boolean = False

            For Each Node In XmlDocument.Item("configuration").Item("connectionStrings")

                If Node.Name = "add" Then
                    If Node.Attributes.Item(1).Name = "connectionString" Then
                        '写入连接字符串
                        Node.Attributes.Item(1).Value = String.Format("Persist Security Info=False;Data Source={0};Initial Catalog={1};User ID={2};Password={3};Packet Size=4096;Pooling=true;Max Pool Size=100;Min Pool Size=1", _
                        Me.Context.Parameters.Item("server"), Me.Context.Parameters.Item("dbname"), Me.Context.Parameters.Item("user"), Me.Context.Parameters.Item("pwd"))

                        FoundIt = True
                    End If
                End If

            Next Node

            If Not FoundIt Then

                Throw New InstallException("web.Config 文件没有包含connectionStrings连接字符串设置")

            End If

            XmlDocument.Save(FileInfo.FullName)

        Catch ex As Exception

            Throw ex

        End Try


    End Sub

End Class