yxqs.vb

不知道怎么用

Imports System.Data
Imports System.Data.SqlClient
Public Class yxqs
    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 button3 As System.Windows.Forms.Button
    Friend WithEvents button2 As System.Windows.Forms.Button
    Friend WithEvents dataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents button1 As System.Windows.Forms.Button
    Friend WithEvents textBox1 As System.Windows.Forms.TextBox
    Friend WithEvents label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.button3 = New System.Windows.Forms.Button
        Me.button2 = New System.Windows.Forms.Button
        Me.dataGrid1 = New System.Windows.Forms.DataGrid
        Me.button1 = New System.Windows.Forms.Button
        Me.textBox1 = New System.Windows.Forms.TextBox
        Me.label1 = New System.Windows.Forms.Label
        CType(Me.dataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'button3
        '
        Me.button3.Location = New System.Drawing.Point(296, 312)
        Me.button3.Name = "button3"
        Me.button3.TabIndex = 11
        Me.button3.Text = "退  出"
        '
        'button2
        '
        Me.button2.Location = New System.Drawing.Point(144, 312)
        Me.button2.Name = "button2"
        Me.button2.TabIndex = 10
        Me.button2.Text = "打  印"
        '
        'dataGrid1
        '
        Me.dataGrid1.CaptionVisible = False
        Me.dataGrid1.DataMember = ""
        Me.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.dataGrid1.Location = New System.Drawing.Point(24, 80)
        Me.dataGrid1.Name = "dataGrid1"
        Me.dataGrid1.ReadOnly = True
        Me.dataGrid1.Size = New System.Drawing.Size(464, 216)
        Me.dataGrid1.TabIndex = 9
        '
        'button1
        '
        Me.button1.Location = New System.Drawing.Point(344, 24)
        Me.button1.Name = "button1"
        Me.button1.TabIndex = 8
        Me.button1.Text = "查  询"
        '
        'textBox1
        '
        Me.textBox1.Location = New System.Drawing.Point(224, 24)
        Me.textBox1.Name = "textBox1"
        Me.textBox1.TabIndex = 7
        Me.textBox1.Text = ""
        '
        'label1
        '
        Me.label1.AutoSize = True
        Me.label1.Location = New System.Drawing.Point(48, 24)
        Me.label1.Name = "label1"
        Me.label1.Size = New System.Drawing.Size(153, 17)
        Me.label1.TabIndex = 6
        Me.label1.Text = "请输入优秀寝室的最低分："
        Me.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'yxqs
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(512, 350)
        Me.Controls.Add(Me.button3)
        Me.Controls.Add(Me.button2)
        Me.Controls.Add(Me.dataGrid1)
        Me.Controls.Add(Me.button1)
        Me.Controls.Add(Me.textBox1)
        Me.Controls.Add(Me.label1)
        Me.MaximizeBox = False
        Me.Name = "yxqs"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "优秀寝室查询"
        CType(Me.dataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region
    Private sql As String
    Private Shared m_Form As New yxqs
    Public Shared ReadOnly Property NewForm() As yxqs
        Get
            If m_Form Is Nothing OrElse m_Form.IsDisposed Then
                m_Form = New yxqs
            End If
            Return m_Form
        End Get
    End Property

    Private Sub button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button3.Click
        Me.Close()
    End Sub

    Private Sub yxqs_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim conn As SqlConnection = New SqlConnection(Me.Tag)
        sql = "SELECT * from 寝室评分表"
        Dim meadpter As SqlDataAdapter = New SqlDataAdapter(sql, conn)
        Dim mebuiler As SqlCommandBuilder = New SqlCommandBuilder(meadpter)
        Dim mydate As DataSet = New DataSet
        meadpter.Fill(mydate, "寝室评分表")
        dataGrid1.SetDataBinding(mydate, "寝室评分表")
    End Sub

    Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.Click
        Dim conn As SqlConnection = New SqlConnection(Me.Tag)
        sql = "SELECT * from 寝室评分表 where 评分 >" + Me.textBox1.Text.Trim()
        Dim meadpter As SqlDataAdapter = New SqlDataAdapter(sql, conn)
        Dim mebuiler As SqlCommandBuilder = New SqlCommandBuilder(meadpter)
        Dim mydate As DataSet = New DataSet
        meadpter.Fill(mydate, "寝室评分表")
        dataGrid1.SetDataBinding(mydate, "寝室评分表")
    End Sub

    Private Sub button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button2.Click
        pfdy.NewForm.Tag = Me.Tag
        pfdy.NewForm.SearchSQL = sql
        pfdy.NewForm.Show()
    End Sub
End Class