special.vb

档案管理系统

Public Class frmSpecial
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        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

    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 Label1 As System.Windows.Forms.Label
    Friend WithEvents btnAdd As System.Windows.Forms.Button
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents txtBound As System.Windows.Forms.TextBox
    Friend WithEvents txtDemo As System.Windows.Forms.TextBox
    Friend WithEvents btnModify As System.Windows.Forms.Button
    Friend WithEvents btnDelete As System.Windows.Forms.Button
    Friend WithEvents btnConfirm As System.Windows.Forms.Button
    Friend WithEvents btnCancel As System.Windows.Forms.Button
    Friend WithEvents stbSpecial As System.Windows.Forms.StatusBar
    Friend WithEvents cmbYear As System.Windows.Forms.ComboBox
    Friend WithEvents cmbName As System.Windows.Forms.ComboBox
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents cmbCollege As System.Windows.Forms.ComboBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.btnAdd = New System.Windows.Forms.Button
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.txtBound = New System.Windows.Forms.TextBox
        Me.txtDemo = New System.Windows.Forms.TextBox
        Me.btnModify = New System.Windows.Forms.Button
        Me.btnDelete = New System.Windows.Forms.Button
        Me.btnConfirm = New System.Windows.Forms.Button
        Me.btnCancel = New System.Windows.Forms.Button
        Me.stbSpecial = New System.Windows.Forms.StatusBar
        Me.cmbYear = New System.Windows.Forms.ComboBox
        Me.cmbName = New System.Windows.Forms.ComboBox
        Me.Label5 = New System.Windows.Forms.Label
        Me.cmbCollege = New System.Windows.Forms.ComboBox
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(16, 16)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(56, 16)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "专业名"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'btnAdd
        '
        Me.btnAdd.Location = New System.Drawing.Point(56, 240)
        Me.btnAdd.Name = "btnAdd"
        Me.btnAdd.Size = New System.Drawing.Size(40, 23)
        Me.btnAdd.TabIndex = 5
        Me.btnAdd.Text = "增加"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(16, 80)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(40, 16)
        Me.Label2.TabIndex = 0
        Me.Label2.Text = "学制"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(16, 112)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(80, 23)
        Me.Label3.TabIndex = 0
        Me.Label3.Text = "毕业最低学分"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(16, 144)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(32, 16)
        Me.Label4.TabIndex = 0
        Me.Label4.Text = "备注"
        Me.Label4.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'txtBound
        '
        Me.txtBound.Location = New System.Drawing.Point(104, 112)
        Me.txtBound.Name = "txtBound"
        Me.txtBound.Size = New System.Drawing.Size(152, 21)
        Me.txtBound.TabIndex = 3
        Me.txtBound.Text = ""
        '
        'txtDemo
        '
        Me.txtDemo.Location = New System.Drawing.Point(56, 144)
        Me.txtDemo.Multiline = True
        Me.txtDemo.Name = "txtDemo"
        Me.txtDemo.Size = New System.Drawing.Size(200, 80)
        Me.txtDemo.TabIndex = 4
        Me.txtDemo.Text = ""
        '
        'btnModify
        '
        Me.btnModify.Location = New System.Drawing.Point(96, 240)
        Me.btnModify.Name = "btnModify"
        Me.btnModify.Size = New System.Drawing.Size(40, 23)
        Me.btnModify.TabIndex = 6
        Me.btnModify.Text = "修改"
        '
        'btnDelete
        '
        Me.btnDelete.Location = New System.Drawing.Point(136, 240)
        Me.btnDelete.Name = "btnDelete"
        Me.btnDelete.Size = New System.Drawing.Size(40, 23)
        Me.btnDelete.TabIndex = 7
        Me.btnDelete.Text = "删除"
        '
        'btnConfirm
        '
        Me.btnConfirm.Location = New System.Drawing.Point(176, 240)
        Me.btnConfirm.Name = "btnConfirm"
        Me.btnConfirm.Size = New System.Drawing.Size(40, 23)
        Me.btnConfirm.TabIndex = 8
        Me.btnConfirm.Text = "确定"
        '
        'btnCancel
        '
        Me.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.btnCancel.Location = New System.Drawing.Point(216, 240)
        Me.btnCancel.Name = "btnCancel"
        Me.btnCancel.Size = New System.Drawing.Size(40, 23)
        Me.btnCancel.TabIndex = 9
        Me.btnCancel.Text = "取消"
        '
        'stbSpecial
        '
        Me.stbSpecial.Location = New System.Drawing.Point(0, 279)
        Me.stbSpecial.Name = "stbSpecial"
        Me.stbSpecial.Size = New System.Drawing.Size(272, 22)
        Me.stbSpecial.TabIndex = 3
        '
        'cmbYear
        '
        Me.cmbYear.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.cmbYear.Items.AddRange(New Object() {"一", "二", "三", "四"})
        Me.cmbYear.Location = New System.Drawing.Point(104, 80)
        Me.cmbYear.Name = "cmbYear"
        Me.cmbYear.Size = New System.Drawing.Size(152, 20)
        Me.cmbYear.TabIndex = 2
        '
        'cmbName
        '
        Me.cmbName.Location = New System.Drawing.Point(104, 16)
        Me.cmbName.Name = "cmbName"
        Me.cmbName.Size = New System.Drawing.Size(152, 20)
        Me.cmbName.TabIndex = 0
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(16, 48)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(56, 16)
        Me.Label5.TabIndex = 0
        Me.Label5.Text = "所属学院"
        Me.Label5.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'cmbCollege
        '
        Me.cmbCollege.Location = New System.Drawing.Point(104, 48)
        Me.cmbCollege.Name = "cmbCollege"
        Me.cmbCollege.Size = New System.Drawing.Size(152, 20)
        Me.cmbCollege.TabIndex = 1
        '
        'frmSpecial
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(272, 301)
        Me.Controls.Add(Me.cmbYear)
        Me.Controls.Add(Me.stbSpecial)
        Me.Controls.Add(Me.btnAdd)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.txtBound)
        Me.Controls.Add(Me.txtDemo)
        Me.Controls.Add(Me.btnModify)
        Me.Controls.Add(Me.btnDelete)
        Me.Controls.Add(Me.btnConfirm)
        Me.Controls.Add(Me.btnCancel)
        Me.Controls.Add(Me.cmbName)
        Me.Controls.Add(Me.Label5)
        Me.Controls.Add(Me.cmbCollege)
        Me.MaximizeBox = False
        Me.Name = "frmSpecial"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "专业设置"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private myDataSet As New DataSet
    Private index As Integer = -1
    Private DataReader As System.Data.OleDb.OleDbDataReader

    Private Sub frmSpecial_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim i As Integer

        If OleConn.SelectQuery("select 学院名称 from 学院信息", DataReader) Then
            While DataReader.Read
                cmbCollege.Items.Add(DataReader.Item(0))
            End While
            DataReader.Close()
        End If

        If OleConn.SelectQuery("select * from 专业信息", myDataSet) Then
            If myDataSet.Tables.Count > 0 Then
                For i = 0 To myDataSet.Tables(0).Rows.Count - 1
                    cmbName.Items.Add(myDataSet.Tables(0).Rows(i).Item("专业名"))
                Next
                stbSpecial.Text = "就绪"
            Else
                stbSpecial.Text = "查询专业信息表失败"
            End If
        Else
            stbSpecial.Text = "查询专业信息表失败"
        End If
    End Sub

    Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click

        If cmbName.Text = "" Then
            stbSpecial.Text = "专业名不能为空"
        ElseIf cmbCollege.SelectedIndex < 0 Then
            stbSpecial.Text = "请指定所属学院"
        ElseIf cmbYear.SelectedIndex < 0 Then
            stbSpecial.Text = "请指定学制"
        ElseIf txtBound.Text = "" Then
            stbSpecial.Text = "请指定总学分"
        Else
            Dim dr As DataRow = myDataSet.Tables(0).NewRow

            Try
                dr.Item("专业名") = cmbName.Text
                dr.Item("学制") = cmbYear.SelectedIndex + 1
                dr.Item("总学分") = CInt(txtBound.Text)
                dr.Item("备注") = txtDemo.Text
                dr.Item("学院名称") = cmbCollege.SelectedItem
                myDataSet.Tables(0).Rows.Add(dr)
                stbSpecial.Text = "增加成功"
                cmbName.Items.Add(cmbName.Text)
            Catch ex As Exception
                DisplayError(ex)
            End Try
        End If
    End Sub

    Private Sub btnConfirm_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConfirm.Click
        Dim succ As Boolean = True

        Try
            OleConn.UpDate(myDataSet)
            myDataSet.AcceptChanges()
        Catch ex As Exception
            succ = False
            DisplayError(ex)
        End Try

        If succ Then
            stbSpecial.Text = "更新数据库成功"
        Else
            stbSpecial.Text = "更新数据库失败"
        End If
    End Sub

    Private Sub btnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click
        Dim i As Integer

        myDataSet.RejectChanges()
        cmbName.Items.Clear()
        For i = 0 To myDataSet.Tables(0).Rows.Count - 1
            cmbName.Items.Add(myDataSet.Tables(0).Rows(i).Item("专业名"))
        Next

        stbSpecial.Text = "你已经取消了所有的改动"
    End Sub

    Private Sub cmbName_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbName.SelectedIndexChanged
        Dim dr As DataRow()
        Dim str As String

        index = cmbName.SelectedIndex
        str = "专业名='" & cmbName.SelectedItem & "'"
        Try
            dr = myDataSet.Tables(0).Select(str)
            cmbYear.SelectedIndex = CInt(dr(0).Item("学制")) - 1
            txtBound.Text = CStr(dr(0).Item("总学分"))
            txtDemo.Text = CStr(dr(0).Item("备注"))
            cmbCollege.SelectedItem = dr(0).Item("学院名称")
        Catch ex As Exception
            DisplayError(ex)
        End Try
    End Sub

    Private Sub btnModify_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnModify.Click
        Dim succ As Boolean = True

        If cmbName.Text = "" Then
            stbSpecial.Text = "专业名不能为空"
        ElseIf index < 0 Then
            stbSpecial.Text = "请先选择要修改的专业记录"
        ElseIf cmbCollege.SelectedIndex < 0 Then
            stbSpecial.Text = "请指定所属学院"
        ElseIf cmbYear.SelectedIndex < 0 Then
            stbSpecial.Text = "请指定学制"
        ElseIf txtBound.Text = "" Then
            stbSpecial.Text = "请指定总学分"
        Else
            Try
                Dim dr As DataRow()
                Dim str As String
                str = "专业名='" & cmbName.Items.Item(index) & "'"
                dr = myDataSet.Tables(0).Select(str)
                dr(0).BeginEdit()
                dr(0).Item("专业名") = cmbName.Text
                dr(0).Item("学制") = cmbYear.SelectedIndex + 1
                dr(0).Item("总学分") = CInt(txtBound.Text)
                dr(0).Item("备注") = txtDemo.Text
                dr(0).Item("学院名称") = cmbCollege.SelectedItem
                dr(0).EndEdit()
                cmbName.Items.Item(index) = cmbName.Text
            Catch ex As Exception
                succ = False
                DisplayError(ex)
            End Try

            If succ Then
                stbSpecial.Text = "修改成功"
            Else
                stbSpecial.Text = "修改失败"
            End If
        End If
    End Sub

    Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
        Dim succ As Boolean = True

        If index < 0 Then
            stbSpecial.Text = "请先选择要删除的专业记录"
        Else
            Try
                Dim dr As DataRow()
                Dim str As String
                str = "专业名='" & cmbName.Items.Item(index) & "'"
                dr = myDataSet.Tables(0).Select(str)
                dr(0).Delete()
                cmbName.Items.RemoveAt(index)
                txtDemo.Text = ""
                txtBound.Text = ""
            Catch ex As Exception
                succ = False
                DisplayError(ex)
            End Try

            If succ Then
                stbSpecial.Text = "删除成功"
            Else
                stbSpecial.Text = "删除失败"
            End If
        End If
    End Sub
End Class