query.vb

档案管理系统

Public Class frmQuery
    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 Label1 As System.Windows.Forms.Label
    Friend WithEvents txtName As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents txtID As System.Windows.Forms.TextBox
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents cmbCollege As System.Windows.Forms.ComboBox
    Friend WithEvents cmbSpecial As System.Windows.Forms.ComboBox
    Friend WithEvents cmbClass As System.Windows.Forms.ComboBox
    Friend WithEvents cmbGrade As System.Windows.Forms.ComboBox
    Friend WithEvents btnQuery As System.Windows.Forms.Button
    Friend WithEvents btnCancel As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.cmbCollege = New System.Windows.Forms.ComboBox
        Me.txtName = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.txtID = New System.Windows.Forms.TextBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label6 = New System.Windows.Forms.Label
        Me.cmbSpecial = New System.Windows.Forms.ComboBox
        Me.cmbClass = New System.Windows.Forms.ComboBox
        Me.cmbGrade = New System.Windows.Forms.ComboBox
        Me.btnQuery = New System.Windows.Forms.Button
        Me.btnCancel = New System.Windows.Forms.Button
        Me.GroupBox1.SuspendLayout()
        Me.SuspendLayout()
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.cmbCollege)
        Me.GroupBox1.Controls.Add(Me.txtName)
        Me.GroupBox1.Controls.Add(Me.Label1)
        Me.GroupBox1.Controls.Add(Me.Label2)
        Me.GroupBox1.Controls.Add(Me.Label3)
        Me.GroupBox1.Controls.Add(Me.txtID)
        Me.GroupBox1.Controls.Add(Me.Label4)
        Me.GroupBox1.Controls.Add(Me.Label5)
        Me.GroupBox1.Controls.Add(Me.Label6)
        Me.GroupBox1.Controls.Add(Me.cmbSpecial)
        Me.GroupBox1.Controls.Add(Me.cmbClass)
        Me.GroupBox1.Controls.Add(Me.cmbGrade)
        Me.GroupBox1.Location = New System.Drawing.Point(16, 8)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(240, 232)
        Me.GroupBox1.TabIndex = 0
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "查询设置"
        '
        'cmbCollege
        '
        Me.cmbCollege.Location = New System.Drawing.Point(80, 162)
        Me.cmbCollege.Name = "cmbCollege"
        Me.cmbCollege.Size = New System.Drawing.Size(144, 20)
        Me.cmbCollege.Sorted = True
        Me.cmbCollege.TabIndex = 4
        '
        'txtName
        '
        Me.txtName.Location = New System.Drawing.Point(80, 65)
        Me.txtName.Name = "txtName"
        Me.txtName.Size = New System.Drawing.Size(144, 21)
        Me.txtName.TabIndex = 1
        Me.txtName.Text = ""
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(16, 65)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(48, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "姓名"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(16, 164)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(48, 23)
        Me.Label2.TabIndex = 0
        Me.Label2.Text = "学院"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(16, 32)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(48, 23)
        Me.Label3.TabIndex = 0
        Me.Label3.Text = "学号"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'txtID
        '
        Me.txtID.Location = New System.Drawing.Point(80, 32)
        Me.txtID.Name = "txtID"
        Me.txtID.Size = New System.Drawing.Size(144, 21)
        Me.txtID.TabIndex = 0
        Me.txtID.Text = ""
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(16, 98)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(56, 23)
        Me.Label4.TabIndex = 0
        Me.Label4.Text = "入学年份"
        Me.Label4.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(16, 131)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(48, 23)
        Me.Label5.TabIndex = 0
        Me.Label5.Text = "班级"
        Me.Label5.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Label6
        '
        Me.Label6.Location = New System.Drawing.Point(16, 197)
        Me.Label6.Name = "Label6"
        Me.Label6.Size = New System.Drawing.Size(48, 23)
        Me.Label6.TabIndex = 0
        Me.Label6.Text = "专业"
        Me.Label6.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'cmbSpecial
        '
        Me.cmbSpecial.Location = New System.Drawing.Point(80, 194)
        Me.cmbSpecial.Name = "cmbSpecial"
        Me.cmbSpecial.Size = New System.Drawing.Size(144, 20)
        Me.cmbSpecial.Sorted = True
        Me.cmbSpecial.TabIndex = 5
        '
        'cmbClass
        '
        Me.cmbClass.Location = New System.Drawing.Point(80, 130)
        Me.cmbClass.Name = "cmbClass"
        Me.cmbClass.Size = New System.Drawing.Size(144, 20)
        Me.cmbClass.Sorted = True
        Me.cmbClass.TabIndex = 3
        '
        'cmbGrade
        '
        Me.cmbGrade.Items.AddRange(New Object() {"2003", "2002", "2001", "2000", "1999"})
        Me.cmbGrade.Location = New System.Drawing.Point(80, 98)
        Me.cmbGrade.Name = "cmbGrade"
        Me.cmbGrade.Size = New System.Drawing.Size(144, 20)
        Me.cmbGrade.TabIndex = 2
        '
        'btnQuery
        '
        Me.btnQuery.DialogResult = System.Windows.Forms.DialogResult.OK
        Me.btnQuery.Location = New System.Drawing.Point(16, 248)
        Me.btnQuery.Name = "btnQuery"
        Me.btnQuery.Size = New System.Drawing.Size(48, 23)
        Me.btnQuery.TabIndex = 1
        Me.btnQuery.Text = "查询"
        '
        'btnCancel
        '
        Me.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.btnCancel.Location = New System.Drawing.Point(96, 248)
        Me.btnCancel.Name = "btnCancel"
        Me.btnCancel.Size = New System.Drawing.Size(48, 23)
        Me.btnCancel.TabIndex = 2
        Me.btnCancel.Text = "取消"
        '
        'frmQuery
        '
        Me.AcceptButton = Me.btnQuery
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.CancelButton = Me.btnCancel
        Me.ClientSize = New System.Drawing.Size(272, 285)
        Me.Controls.Add(Me.GroupBox1)
        Me.Controls.Add(Me.btnQuery)
        Me.Controls.Add(Me.btnCancel)
        Me.MaximizeBox = False
        Me.Name = "frmQuery"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "学生查询"
        Me.GroupBox1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private DataReader As System.Data.OleDb.OleDbDataReader

    Private Sub frmQuery_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If OleConn.SelectQuery("select 班名 from 班级信息", DataReader) Then
            While DataReader.Read
                cmbClass.Items.Add(DataReader.Item(0))
            End While
            DataReader.Close()
        End If

        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 专业名 from 专业信息", DataReader) Then
            While DataReader.Read
                cmbSpecial.Items.Add(DataReader.Item(0))
            End While
            DataReader.Close()
        End If
    End Sub

    Private Sub btnQuery_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnQuery.Click
        Try
            With OleConn.Command
                .Parameters.Clear()
                .Parameters.Add("@id", OleDb.OleDbType.Integer)
                .Parameters.Add("@name", OleDb.OleDbType.VarChar)
                .Parameters.Add("@grade", OleDb.OleDbType.Integer)
                .Parameters.Add("@class", OleDb.OleDbType.VarChar)
                .Parameters.Add("@college", OleDb.OleDbType.VarChar)
                .Parameters.Add("@special", OleDb.OleDbType.VarChar)
                If txtID.Text = "" Then
                    .Parameters(0).Value = 0
                Else
                    .Parameters(0).Value = CInt(txtID.Text)
                End If
                .Parameters(1).Value = txtName.Text
                .Parameters(2).Value = cmbGrade.SelectedIndex
                If cmbClass.SelectedIndex < 0 Then
                    .Parameters(3).Value = ""
                Else
                    .Parameters(3).Value = cmbClass.SelectedItem
                End If
                If cmbCollege.SelectedIndex < 0 Then
                    .Parameters(4).Value = ""
                Else
                    .Parameters(4).Value = cmbCollege.SelectedItem
                End If
                If cmbSpecial.SelectedIndex < 0 Then
                    .Parameters(5).Value = ""
                Else
                    .Parameters(5).Value = cmbSpecial.SelectedItem
                End If
            End With

            OleConn.SelectSP("student", stdDataSet)
        Catch ex As Exception
            DisplayError(ex)
        End Try
    End Sub
End Class