formbumen.vb

详细介绍了系统的设计过程,对于初学者是一个不错的参考资料

Imports System.Data.OleDb
Imports System.Data.SqlClient

Public Class FrmBF
    Inherits System.Windows.Forms.Form
    Private Mytag As String

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New(ByVal myttag As Integer)
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化
        Mytag = myttag
    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents 货物信息 As System.Windows.Forms.GroupBox
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents label1 As System.Windows.Forms.Label
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents bmjb As System.Windows.Forms.TextBox
    Friend WithEvents bmgm As System.Windows.Forms.TextBox
    Friend WithEvents bmmc As System.Windows.Forms.TextBox
    Friend WithEvents bmbh As System.Windows.Forms.TextBox
    Friend WithEvents Ybm As System.Windows.Forms.ComboBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.货物信息 = New System.Windows.Forms.GroupBox
        Me.Ybm = New System.Windows.Forms.ComboBox
        Me.bmjb = New System.Windows.Forms.TextBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.bmgm = New System.Windows.Forms.TextBox
        Me.Label3 = New System.Windows.Forms.Label
        Me.bmmc = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.bmbh = New System.Windows.Forms.TextBox
        Me.label1 = New System.Windows.Forms.Label
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.货物信息.SuspendLayout()
        Me.SuspendLayout()
        '
        '货物信息
        '
        Me.货物信息.Controls.Add(Me.Ybm)
        Me.货物信息.Controls.Add(Me.bmjb)
        Me.货物信息.Controls.Add(Me.Label4)
        Me.货物信息.Controls.Add(Me.bmgm)
        Me.货物信息.Controls.Add(Me.Label3)
        Me.货物信息.Controls.Add(Me.bmmc)
        Me.货物信息.Controls.Add(Me.Label2)
        Me.货物信息.Controls.Add(Me.bmbh)
        Me.货物信息.Controls.Add(Me.label1)
        Me.货物信息.Controls.Add(Me.Button1)
        Me.货物信息.Controls.Add(Me.Button2)
        Me.货物信息.Location = New System.Drawing.Point(20, 16)
        Me.货物信息.Name = "货物信息"
        Me.货物信息.Size = New System.Drawing.Size(220, 232)
        Me.货物信息.TabIndex = 5
        Me.货物信息.TabStop = False
        Me.货物信息.Text = "部门信息"
        '
        'Ybm
        '
        Me.Ybm.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.Ybm.Location = New System.Drawing.Point(80, 32)
        Me.Ybm.Name = "Ybm"
        Me.Ybm.Size = New System.Drawing.Size(80, 20)
        Me.Ybm.TabIndex = 25
        '
        'bmjb
        '
        Me.bmjb.Location = New System.Drawing.Point(80, 104)
        Me.bmjb.Name = "bmjb"
        Me.bmjb.Size = New System.Drawing.Size(80, 21)
        Me.bmjb.TabIndex = 7
        Me.bmjb.Text = ""
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(8, 109)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(64, 12)
        Me.Label4.TabIndex = 6
        Me.Label4.Text = "部门级别:"
        '
        'bmgm
        '
        Me.bmgm.Location = New System.Drawing.Point(80, 80)
        Me.bmgm.Name = "bmgm"
        Me.bmgm.Size = New System.Drawing.Size(80, 21)
        Me.bmgm.TabIndex = 5
        Me.bmgm.Text = ""
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(8, 83)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(64, 17)
        Me.Label3.TabIndex = 4
        Me.Label3.Text = "部门规模:"
        '
        'bmmc
        '
        Me.bmmc.Location = New System.Drawing.Point(80, 56)
        Me.bmmc.Name = "bmmc"
        Me.bmmc.Size = New System.Drawing.Size(80, 21)
        Me.bmmc.TabIndex = 3
        Me.bmmc.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(8, 59)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(64, 14)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "部门名称:"
        '
        'bmbh
        '
        Me.bmbh.Location = New System.Drawing.Point(80, 32)
        Me.bmbh.Name = "bmbh"
        Me.bmbh.Size = New System.Drawing.Size(80, 21)
        Me.bmbh.TabIndex = 1
        Me.bmbh.Text = ""
        '
        'label1
        '
        Me.label1.Location = New System.Drawing.Point(8, 36)
        Me.label1.Name = "label1"
        Me.label1.Size = New System.Drawing.Size(64, 11)
        Me.label1.TabIndex = 0
        Me.label1.Text = "部门编号:"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(96, 192)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(56, 23)
        Me.Button1.TabIndex = 4
        Me.Button1.Text = "增加"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(152, 192)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(56, 23)
        Me.Button2.TabIndex = 5
        Me.Button2.Text = "退出"
        '
        'FrmBF
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(256, 270)
        Me.Controls.Add(Me.货物信息)
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.Name = "FrmBF"
        Me.Text = "部门信息表"
        Me.货物信息.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Me.Close()
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If Mytag = 0 Then
            InsertSub()
        ElseIf Mytag = 1 Then
            UpdateSub()
        End If
    End Sub
    Private Sub InsertSub()
        Dim connstr As New String("provider=SQLOLEDB.1;User ID=sa;PassWord=110;Persist Security Info=false;Initial Catalog=wage;Data Source=.;")
        Dim Cn As New OleDbConnection
        Dim cmd As OleDbCommand
        Dim SQLString As String

        SQLString = "INSERT INTO 部门信息表 (部门编号,部门名称,部门人数,部门级别)" & _
             " VALUES(" & CInt(bmbh.Text) & ",'" & bmmc.Text & "'," & _
             CInt(bmgm.Text) & ",'" & bmjb.Text & "')"
        Cn.ConnectionString = connstr
        Cn.Open()

        cmd = New OleDbCommand(SQLString, Cn)
        Try
            cmd.ExecuteNonQuery()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
        cmd.Dispose()
        Cn.Dispose()
    End Sub
    Private Sub UpdateSub()
        Dim connstr As New String("provider=SQLOLEDB.1;User ID=sa;PassWord=110;Persist Security Info=false;Initial Catalog=wage;Data Source=.;")
        Dim Cn As New OleDbConnection
        Dim cmd As OleDbCommand
        Dim SQLString As String

        SQLString = "UpDate 部门信息表 Set 部门编号=" & CInt(Ybm.SelectedItem) & ",部门名称='" & _
        bmmc.Text & "',部门人数=" & CInt(bmgm.Text) & ",部门级别='" & _
        bmjb.Text & "' where 部门编号 = " & CInt(Ybm.SelectedItem)

        Cn.ConnectionString = connstr
        Cn.Open()

        cmd = New OleDbCommand(SQLString, Cn)
        Try
            cmd.ExecuteNonQuery()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
        cmd.Dispose()
        Cn.Dispose()
    End Sub

    Private Sub FrmBF_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim connstr As New String("provider=SQLOLEDB.1;User ID=sa;PassWord=110;Persist Security Info=false;Initial Catalog=wage;Data Source=.;")
        Dim Cn As New OleDbConnection
        Dim searchSql As String
        Dim cmd As OleDbCommand
        Dim dr As OleDbDataReader
        If Mytag = 0 Then
            Me.bmbh.Visible = True
            Me.Ybm.Visible = False
            Button1.Text = "添加"
        Else
            Me.bmbh.Visible = False
            Me.Ybm.Visible = True
            searchSql = "select 部门编号 from 部门信息表"
            Me.bmmc.ReadOnly = True
            Try
                Cn.ConnectionString = connstr
                Cn.Open()
                cmd = New OleDbCommand(searchSql, Cn)
                dr = cmd.ExecuteReader()
                Dim i As Integer = 0
                Do While dr.Read()
                    Me.Ybm.Items.Add(dr.GetInt32(0))
                Loop
                dr.Close()
            Catch ex As Exception
                MsgBox(ex.Message)
            End Try
            cmd.Dispose()
            Button1.Text = "修改"
        End If
        Cn.Dispose()
    End Sub

    Private Sub Ybm_SelectionChangeCommitted(ByVal sender As Object, ByVal e As System.EventArgs) Handles Ybm.SelectionChangeCommitted
        Dim connstr As New String("provider=SQLOLEDB.1;User ID=sa;PassWord=110;Persist Security Info=false;Initial Catalog=wage;Data Source=.;")
        Dim Cn As New OleDbConnection
        Dim searchSql As String
        Dim cmd As OleDbCommand
        Dim dr As OleDbDataReader

        searchSql = "select 部门名称,部门人数,部门级别 from 部门信息表 where 部门编号=" & CInt(Ybm.SelectedItem)
        Try
            Cn.ConnectionString = connstr
            Cn.Open()
            cmd = New OleDbCommand(searchSql, Cn)
            dr = cmd.ExecuteReader()
            Do While dr.Read()
                Me.bmmc.Text = dr.GetString(0)
                Me.bmgm.Text = dr.GetValue(1)
                Me.bmjb.Text = dr.GetValue(2)
            Loop
            dr.Close()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
        Cn.Dispose()
        cmd.Dispose()
    End Sub
End Class