frmobjectman.vb

这个是本人写的题库系统,开发工具是vb.net.试题编辑,试卷编辑,可以在word中编辑试题.由于时间关系,很多功能需要细化.

Public Class frmobjectman
    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 GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents txt_objtype As System.Windows.Forms.TextBox
    Friend WithEvents cmd_add As System.Windows.Forms.Button
    Friend WithEvents cmd_delete As System.Windows.Forms.Button
    Friend WithEvents cmd_modify As System.Windows.Forms.Button
    Friend WithEvents cmd_cancel As System.Windows.Forms.Button
    Friend WithEvents dg_objtype As System.Windows.Forms.DataGrid
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(frmobjectman))
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.dg_objtype = New System.Windows.Forms.DataGrid
        Me.Label2 = New System.Windows.Forms.Label
        Me.txt_objtype = New System.Windows.Forms.TextBox
        Me.cmd_add = New System.Windows.Forms.Button
        Me.cmd_delete = New System.Windows.Forms.Button
        Me.cmd_modify = New System.Windows.Forms.Button
        Me.cmd_cancel = New System.Windows.Forms.Button
        Me.GroupBox1.SuspendLayout()
        CType(Me.dg_objtype, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.dg_objtype)
        Me.GroupBox1.Controls.Add(Me.Label2)
        Me.GroupBox1.Controls.Add(Me.txt_objtype)
        Me.GroupBox1.Location = New System.Drawing.Point(49, 16)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(248, 256)
        Me.GroupBox1.TabIndex = 1
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "本题库所有题型："
        '
        'dg_objtype
        '
        Me.dg_objtype.AlternatingBackColor = System.Drawing.Color.Lavender
        Me.dg_objtype.BackColor = System.Drawing.Color.WhiteSmoke
        Me.dg_objtype.BackgroundColor = System.Drawing.Color.LightGray
        Me.dg_objtype.CaptionBackColor = System.Drawing.Color.LightSteelBlue
        Me.dg_objtype.CaptionForeColor = System.Drawing.Color.MidnightBlue
        Me.dg_objtype.DataMember = ""
        Me.dg_objtype.FlatMode = True
        Me.dg_objtype.Font = New System.Drawing.Font("Tahoma", 8.0!)
        Me.dg_objtype.ForeColor = System.Drawing.Color.MidnightBlue
        Me.dg_objtype.GridLineColor = System.Drawing.Color.Gainsboro
        Me.dg_objtype.HeaderBackColor = System.Drawing.Color.MidnightBlue
        Me.dg_objtype.HeaderFont = New System.Drawing.Font("Tahoma", 8.0!, System.Drawing.FontStyle.Bold)
        Me.dg_objtype.HeaderForeColor = System.Drawing.Color.WhiteSmoke
        Me.dg_objtype.LinkColor = System.Drawing.Color.Teal
        Me.dg_objtype.Location = New System.Drawing.Point(8, 24)
        Me.dg_objtype.Name = "dg_objtype"
        Me.dg_objtype.ParentRowsBackColor = System.Drawing.Color.Gainsboro
        Me.dg_objtype.ParentRowsForeColor = System.Drawing.Color.MidnightBlue
        Me.dg_objtype.ReadOnly = True
        Me.dg_objtype.SelectionBackColor = System.Drawing.Color.CadetBlue
        Me.dg_objtype.SelectionForeColor = System.Drawing.Color.WhiteSmoke
        Me.dg_objtype.Size = New System.Drawing.Size(232, 184)
        Me.dg_objtype.TabIndex = 7
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(8, 228)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(72, 16)
        Me.Label2.TabIndex = 6
        Me.Label2.Text = "题型名称："
        '
        'txt_objtype
        '
        Me.txt_objtype.Location = New System.Drawing.Point(88, 220)
        Me.txt_objtype.MaxLength = 50
        Me.txt_objtype.Name = "txt_objtype"
        Me.txt_objtype.Size = New System.Drawing.Size(152, 21)
        Me.txt_objtype.TabIndex = 5
        Me.txt_objtype.Text = ""
        '
        'cmd_add
        '
        Me.cmd_add.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.cmd_add.Location = New System.Drawing.Point(16, 288)
        Me.cmd_add.Name = "cmd_add"
        Me.cmd_add.Size = New System.Drawing.Size(60, 30)
        Me.cmd_add.TabIndex = 2
        Me.cmd_add.Text = "添 加"
        '
        'cmd_delete
        '
        Me.cmd_delete.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.cmd_delete.Location = New System.Drawing.Point(101, 288)
        Me.cmd_delete.Name = "cmd_delete"
        Me.cmd_delete.Size = New System.Drawing.Size(60, 30)
        Me.cmd_delete.TabIndex = 3
        Me.cmd_delete.Text = "删 除"
        '
        'cmd_modify
        '
        Me.cmd_modify.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.cmd_modify.Location = New System.Drawing.Point(186, 288)
        Me.cmd_modify.Name = "cmd_modify"
        Me.cmd_modify.Size = New System.Drawing.Size(60, 30)
        Me.cmd_modify.TabIndex = 4
        Me.cmd_modify.Text = "修 改"
        '
        'cmd_cancel
        '
        Me.cmd_cancel.FlatStyle = System.Windows.Forms.FlatStyle.Flat
        Me.cmd_cancel.Location = New System.Drawing.Point(271, 288)
        Me.cmd_cancel.Name = "cmd_cancel"
        Me.cmd_cancel.Size = New System.Drawing.Size(60, 30)
        Me.cmd_cancel.TabIndex = 5
        Me.cmd_cancel.Text = "返 回"
        '
        'frmobjectman
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(346, 335)
        Me.Controls.Add(Me.cmd_cancel)
        Me.Controls.Add(Me.cmd_modify)
        Me.Controls.Add(Me.cmd_delete)
        Me.Controls.Add(Me.cmd_add)
        Me.Controls.Add(Me.GroupBox1)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.MaximizeBox = False
        Me.Name = "frmobjectman"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "题型设置"
        Me.GroupBox1.ResumeLayout(False)
        CType(Me.dg_objtype, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region
    Dim dbset As DataSet
    Private Sub cmd_cancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd_cancel.Click
        Me.Close()
    End Sub

    Private Sub frmobjectman_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        CurObjtType.Initials()
        MyObjtType.Initials()
        dbset = MyObjtType.LoadObjTypes()
        If Not dbset Is Nothing Then
            dg_objtype.DataSource = dbset.Tables(0).DefaultView
            dg_objtype.CaptionText = "题型信息"
        End If
    End Sub


    Private Sub dg_objtype_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles dg_objtype.CurrentCellChanged
        If dg_objtype.Item(dg_objtype.CurrentRowIndex, 0) Is Nothing Then
            Exit Sub
        End If
        txt_objtype.Text = dg_objtype.Item(dg_objtype.CurrentRowIndex, 1)
        MyObjtType.GetInfo(MakeStr(txt_objtype.Text))
        CurObjtType.Equal(MyObjtType)
    End Sub

    Private Sub cmd_add_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd_add.Click
        If Trim(txt_objtype.Text) = "" Then
            MsgBox("题型名称不能为空", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            txt_objtype.Focus()
            Exit Sub
        End If
        If MyObjtType.IsInDB(MakeStr(txt_objtype.Text)) Then
            MsgBox("题型名称[" & Trim(txt_objtype.Text) & "]已经存在", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            MyObjtType.Initials()
            txt_objtype.Text = ""
            txt_objtype.Focus()
            Exit Sub
        End If
        MyObjtType.ObjectTypeID = MyObjtType.GetNewID
        MyObjtType.ObjectTypeName = MakeStr(txt_objtype.Text)
        MyObjtType.InsertDB()
        CurObjtType.Equal(MyObjtType)
        dbset = MyObjtType.LoadObjTypes()
        If Not dbset Is Nothing Then
            dg_objtype.DataSource = dbset.Tables(0).DefaultView
            dg_objtype.CaptionText = "题型信息"
        End If
    End Sub

    Private Sub cmd_delete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd_delete.Click
        If CurObjtType.ObjectTypeID <= 0 Then
            MsgBox("请选择您要删除的记录不能为空", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            Exit Sub
        End If
        If MyObjtType.HaveChild(CurObjtType.ObjectTypeID) Then
            MsgBox("题型[" & CurObjtType.ObjectTypeName & "]存在试题，请先删除该类型试题", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            Exit Sub
        End If
        If MsgBox("您是否真的要删除题型[" & CurObjtType.ObjectTypeName & "]", MsgBoxStyle.YesNo + MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0") = MsgBoxResult.Yes Then
            MyObjtType.ObjectTypeID = CurObjtType.ObjectTypeID
            If MyObjtType.Delete() Then
                CurObjtType.Initials()
                dbset = MyObjtType.LoadObjTypes()
                txt_objtype.Text = ""
                If Not dbset Is Nothing Then
                    dg_objtype.DataSource = dbset.Tables(0).DefaultView
                    dg_objtype.CaptionText = "题型信息"
                End If
            End If
        End If
    End Sub

    Private Sub cmd_modify_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd_modify.Click
        If CurObjtType.ObjectTypeID <= 0 Then
            MsgBox("请选择您要删除的记录不能为空", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            Exit Sub
        End If
        If Trim(txt_objtype.Text) = "" Then
            MsgBox("题型名称不能为空", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            txt_objtype.Focus()
            Exit Sub
        End If

        If CurObjtType.ObjectTypeName = Trim(txt_objtype.Text) Then
            Exit Sub
        End If

        If MyObjtType.IsInDB(MakeStr(txt_objtype.Text)) Then
            MsgBox("题型名称[" & Trim(txt_objtype.Text) & "]已经存在", MsgBoxStyle.Exclamation, "翼清测试题库系统V1.0")
            txt_objtype.Text = CurObjtType.ObjectTypeName
            Exit Sub
        End If
        MyObjtType.ObjectTypeID = CurObjtType.ObjectTypeID
        MyObjtType.ObjectTypeName = MakeStr(txt_objtype.Text)
        If MyObjtType.Modify() Then
            CurObjtType.Equal(MyObjtType)
            dg_objtype.Item(dg_objtype.CurrentRowIndex, 1) = CurObjtType.ObjectTypeName
        End If
    End Sub

    Private Sub frmobjectman_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        CurObjtType.Initials()
        MyObjtType.Initials()
    End Sub
End Class