lxzx.vb

不知道怎么用

Imports System.Data
Imports System.Data.SqlClient
Public Class lxzx
    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 button2 As System.Windows.Forms.Button
    Friend WithEvents button1 As System.Windows.Forms.Button
    Friend WithEvents textBox2 As System.Windows.Forms.TextBox
    Friend WithEvents textBox1 As System.Windows.Forms.TextBox
    Friend WithEvents label2 As System.Windows.Forms.Label
    Friend WithEvents label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.button2 = New System.Windows.Forms.Button
        Me.button1 = New System.Windows.Forms.Button
        Me.textBox2 = New System.Windows.Forms.TextBox
        Me.textBox1 = New System.Windows.Forms.TextBox
        Me.label2 = New System.Windows.Forms.Label
        Me.label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'button2
        '
        Me.button2.Location = New System.Drawing.Point(136, 128)
        Me.button2.Name = "button2"
        Me.button2.TabIndex = 11
        Me.button2.Text = "退 出"
        '
        'button1
        '
        Me.button1.Location = New System.Drawing.Point(16, 128)
        Me.button1.Name = "button1"
        Me.button1.TabIndex = 10
        Me.button1.Text = "注 销"
        '
        'textBox2
        '
        Me.textBox2.Location = New System.Drawing.Point(96, 64)
        Me.textBox2.Name = "textBox2"
        Me.textBox2.TabIndex = 9
        Me.textBox2.Text = ""
        '
        'textBox1
        '
        Me.textBox1.Location = New System.Drawing.Point(96, 16)
        Me.textBox1.Name = "textBox1"
        Me.textBox1.TabIndex = 8
        Me.textBox1.Text = ""
        '
        'label2
        '
        Me.label2.Location = New System.Drawing.Point(-8, 64)
        Me.label2.Name = "label2"
        Me.label2.TabIndex = 7
        Me.label2.Text = "姓名："
        Me.label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'label1
        '
        Me.label1.Location = New System.Drawing.Point(-8, 16)
        Me.label1.Name = "label1"
        Me.label1.TabIndex = 6
        Me.label1.Text = "学号："
        Me.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'lxzx
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(232, 182)
        Me.Controls.Add(Me.button2)
        Me.Controls.Add(Me.button1)
        Me.Controls.Add(Me.textBox2)
        Me.Controls.Add(Me.textBox1)
        Me.Controls.Add(Me.label2)
        Me.Controls.Add(Me.label1)
        Me.MaximizeBox = False
        Me.Name = "lxzx"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "离校注销"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Private Shared m_Form As New lxzx
    Public Shared ReadOnly Property NewForm() As lxzx
        Get
            If m_Form Is Nothing OrElse m_Form.IsDisposed Then
                m_Form = New lxzx
            End If
            Return m_Form
        End Get
    End Property
    Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.Click
        If main.NewForm.StatusBarPanel3.Text = "超级管理员" Then
            Try
                Dim conn As New SqlConnection(Me.Tag)
                conn.Open()
                Dim cmd As New SqlCommand("delete from 学生信息表 where 学号='" & Me.textBox1.Text & "' and 姓名='" & Me.textBox2.Text & "'", conn)
                Dim reader As SqlDataReader
                reader = cmd.ExecuteReader
                reader.Close()
                Dim cmd1 As New SqlCommand("delete from 学生寝室表 where 学号='" + Me.textBox1.Text + "' and 姓名='" + Me.textBox2.Text + "'", conn)
                Dim reader1 As SqlDataReader
                reader1 = cmd.ExecuteReader
                reader1.Close()
                conn.Close()
                MsgBox("删除成功！")
                Me.textBox1.Text = ""
                Me.textBox2.Text = ""
                Me.textBox1.Focus()
            Catch ex As Exception
                MsgBox(ex.Message)
            End Try
        End If
    End Sub

    Private Sub button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button2.Click
        Me.Close()

    End Sub
End Class