Public Class frmCollege
    Inherits System.Windows.Forms.Form

#Region " Windows 窗體設(shè)計(jì)器生成的代碼 "

    Public Sub New()
        MyBase.New()

        '該調(diào)用是 Windows 窗體設(shè)計(jì)器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 調(diào)用之后添加任何初始化

    End Sub

    '窗體重寫(xiě) dispose 以清理組件列表。
    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 窗體設(shè)計(jì)器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下過(guò)程是 Windows 窗體設(shè)計(jì)器所必需的
    '可以使用 Windows 窗體設(shè)計(jì)器修改此過(guò)程。
    '不要使用代碼編輯器修改它。
    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 txtDean As System.Windows.Forms.TextBox
    Friend WithEvents txtSecretary 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 stbCollege As System.Windows.Forms.StatusBar
    Friend WithEvents cmbName 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.txtDean = New System.Windows.Forms.TextBox
        Me.txtSecretary = 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.stbCollege = New System.Windows.Forms.StatusBar
        Me.cmbName = New System.Windows.Forms.ComboBox
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(24, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(64, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "學(xué)院名稱(chēng)"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'btnAdd
        '
        Me.btnAdd.Location = New System.Drawing.Point(24, 136)
        Me.btnAdd.Name = "btnAdd"
        Me.btnAdd.Size = New System.Drawing.Size(40, 23)
        Me.btnAdd.TabIndex = 2
        Me.btnAdd.Text = "增加"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(24, 64)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(64, 23)
        Me.Label2.TabIndex = 0
        Me.Label2.Text = "院長(zhǎng)"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(24, 96)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(64, 23)
        Me.Label3.TabIndex = 0
        Me.Label3.Text = "教務(wù)秘書(shū)"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft
        '
        'txtDean
        '
        Me.txtDean.Location = New System.Drawing.Point(96, 60)
        Me.txtDean.Name = "txtDean"
        Me.txtDean.Size = New System.Drawing.Size(136, 21)
        Me.txtDean.TabIndex = 3
        Me.txtDean.Text = ""
        '
        'txtSecretary
        '
        Me.txtSecretary.Location = New System.Drawing.Point(96, 96)
        Me.txtSecretary.Name = "txtSecretary"
        Me.txtSecretary.Size = New System.Drawing.Size(136, 21)
        Me.txtSecretary.TabIndex = 3
        Me.txtSecretary.Text = ""
        '
        'btnModify
        '
        Me.btnModify.Location = New System.Drawing.Point(66, 136)
        Me.btnModify.Name = "btnModify"
        Me.btnModify.Size = New System.Drawing.Size(40, 23)
        Me.btnModify.TabIndex = 2
        Me.btnModify.Text = "修改"
        '
        'btnDelete
        '
        Me.btnDelete.Location = New System.Drawing.Point(108, 136)
        Me.btnDelete.Name = "btnDelete"
        Me.btnDelete.Size = New System.Drawing.Size(40, 23)
        Me.btnDelete.TabIndex = 2
        Me.btnDelete.Text = "刪除"
        '
        'btnConfirm
        '
        Me.btnConfirm.Location = New System.Drawing.Point(150, 136)
        Me.btnConfirm.Name = "btnConfirm"
        Me.btnConfirm.Size = New System.Drawing.Size(40, 23)
        Me.btnConfirm.TabIndex = 2
        Me.btnConfirm.Text = "確定"
        '
        'btnCancel
        '
        Me.btnCancel.Location = New System.Drawing.Point(192, 136)
        Me.btnCancel.Name = "btnCancel"
        Me.btnCancel.Size = New System.Drawing.Size(40, 23)
        Me.btnCancel.TabIndex = 2
        Me.btnCancel.Text = "取消"
        '
        'stbCollege
        '
        Me.stbCollege.Location = New System.Drawing.Point(0, 181)
        Me.stbCollege.Name = "stbCollege"
        Me.stbCollege.Size = New System.Drawing.Size(264, 16)
        Me.stbCollege.TabIndex = 4
        '
        'cmbName
        '
        Me.cmbName.Location = New System.Drawing.Point(96, 24)
        Me.cmbName.Name = "cmbName"
        Me.cmbName.Size = New System.Drawing.Size(136, 20)
        Me.cmbName.TabIndex = 5
        '
        'frmCollege
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(264, 197)
        Me.Controls.Add(Me.cmbName)
        Me.Controls.Add(Me.stbCollege)
        Me.Controls.Add(Me.txtDean)
        Me.Controls.Add(Me.btnAdd)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.txtSecretary)
        Me.Controls.Add(Me.btnModify)
        Me.Controls.Add(Me.btnDelete)
        Me.Controls.Add(Me.btnConfirm)
        Me.Controls.Add(Me.btnCancel)
        Me.MaximizeBox = False
        Me.Name = "frmCollege"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "學(xué)院設(shè)置"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private myDataset As New DataSet
    Private index As Integer = -1

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

        If cmbName.Text = "" Then
            stbCollege.Text = "學(xué)院名稱(chēng)不能為空"
        Else
            Try
                Dim dr As DataRow = myDataset.Tables(0).NewRow
                dr.Item("學(xué)院名稱(chēng)") = cmbName.Text
                dr.Item("院長(zhǎng)") = txtDean.Text
                dr.Item("教務(wù)秘書(shū)") = txtSecretary.Text
                myDataset.Tables(0).Rows.Add(dr)
                cmbName.Items.Add(cmbName.Text)
            Catch ex As Exception
                succ = False
                DisplayError(ex)
            End Try

            If succ Then
                stbCollege.Text = "增加成功"
            Else
                stbCollege.Text = "增加失敗"
            End If
        End If
    End Sub

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

        If OleConn.SelectQuery("select * from 學(xué)院信息", 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("學(xué)院名稱(chēng)"))
                Next
                stbCollege.Text = "就緒"
            Else
                stbCollege.Text = "查詢(xún)學(xué)院信息失敗"
            End If
        Else
            stbCollege.Text = "查詢(xún)學(xué)院信息失敗"
        End If
    End Sub

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

        If cmbName.Text <> "" Then
            If index >= 0 Then
                Try
                    Dim dr As DataRow()
                    Dim str As String

                    str = "學(xué)院名稱(chēng)='" & cmbName.Items.Item(index) & "'"
                    dr = myDataset.Tables(0).Select(str)
                    dr(0).BeginEdit()
                    dr(0).Item("學(xué)院名稱(chēng)") = cmbName.Text
                    dr(0).Item("院長(zhǎng)") = txtDean.Text
                    dr(0).Item("教務(wù)秘書(shū)") = txtSecretary.Text
                    dr(0).EndEdit()
                    cmbName.Items.Item(index) = cmbName.Text
                Catch ex As Exception
                    succ = False
                    DisplayError(ex)
                End Try

                If succ Then
                    stbCollege.Text = "修改成功"
                Else
                    stbCollege.Text = "修改失敗"
                End If
            Else
                stbCollege.Text = "請(qǐng)先選擇要修改的記錄"
            End If
        Else
            stbCollege.Text = "學(xué)院名稱(chēng)不能為空"
        End If
    End Sub

    Private Sub cmbName_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbName.SelectedIndexChanged
        index = cmbName.SelectedIndex

        Dim dr As DataRow()
        Dim str As String

        str = "學(xué)院名稱(chēng)='" & cmbName.SelectedItem & "'"
        dr = myDataset.Tables(0).Select(str)
        txtDean.Text = Trim(dr(0).Item("院長(zhǎng)"))
        txtSecretary.Text = Trim(dr(0).Item("教務(wù)秘書(shū)"))
    End Sub

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

        If index >= 0 Then
            Try
                Dim dr As DataRow()
                Dim str As String

                str = "學(xué)院名稱(chēng)='" & cmbName.Items.Item(index) & "'"
                dr = myDataset.Tables(0).Select(str)
                dr(0).Delete()
                cmbName.Items.RemoveAt(index)
                txtDean.Text = ""
                txtSecretary.Text = ""
            Catch ex As Exception
                succ = False
                DisplayError(ex)
            End Try

            If succ Then
                stbCollege.Text = "刪除成功"
            Else
                stbCollege.Text = "刪除失敗"
            End If
        Else
            stbCollege.Text = "請(qǐng)先選擇要修改的記錄"
        End If
    End Sub

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

        Try
            OleConn.UpDate(myDataset.Tables(0))
            myDataset.AcceptChanges()
        Catch ex As Exception
            succ = False
            DisplayError(ex)
        End Try

        If succ Then
            stbCollege.Text = "更新數(shù)據(jù)庫(kù)成功"
        Else
            stbCollege.Text = "更新數(shù)據(jù)庫(kù)失敗"
        End If
    End Sub

    Private Sub btnCancel_Click(ByVal sender As 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("學(xué)院名稱(chēng)"))
        Next

        stbCollege.Text = "你已經(jīng)取消了所有的改動(dòng)"
    End Sub
End Class