delstuinfo.vb

一个很不错的学生管理系统

Public Class DelStuInfo
    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 Button1 As System.Windows.Forms.Button
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.GroupBox1.SuspendLayout()
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'GroupBox1
        '
        Me.GroupBox1.Controls.Add(Me.Button1)
        Me.GroupBox1.Controls.Add(Me.TextBox1)
        Me.GroupBox1.Controls.Add(Me.Label2)
        Me.GroupBox1.Controls.Add(Me.ComboBox1)
        Me.GroupBox1.Controls.Add(Me.Label1)
        Me.GroupBox1.Font = New System.Drawing.Font("宋体", 10.5!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.GroupBox1.Location = New System.Drawing.Point(8, 0)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(552, 112)
        Me.GroupBox1.TabIndex = 1
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "查询学生信息："
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(352, 64)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(112, 24)
        Me.Button1.TabIndex = 4
        Me.Button1.Text = "确定"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(168, 64)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(144, 23)
        Me.TextBox1.TabIndex = 3
        Me.TextBox1.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(200, 32)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(80, 24)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "查询条件"
        '
        'ComboBox1
        '
        Me.ComboBox1.Items.AddRange(New Object() {"年龄范围", "省份", "班级", "性别"})
        Me.ComboBox1.Location = New System.Drawing.Point(16, 64)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(121, 22)
        Me.ComboBox1.TabIndex = 1
        Me.ComboBox1.Text = "请选择"
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(34, 32)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(80, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "查询方式"
        '
        'DataGrid1
        '
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(8, 112)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(552, 240)
        Me.DataGrid1.TabIndex = 2
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(352, 368)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(96, 24)
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "确定删除"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(456, 368)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(96, 24)
        Me.Button3.TabIndex = 4
        Me.Button3.Text = "退出删除"
        '
        'DelStuInfo
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(568, 405)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.DataGrid1)
        Me.Controls.Add(Me.GroupBox1)
        Me.Name = "DelStuInfo"
        Me.Text = "DelStuInfo"
        Me.GroupBox1.ResumeLayout(False)
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try

            Dim str As String

            If ComboBox1.Text = "请选择" Then
                MsgBox("请选择查询方式", MsgBoxStyle.OKOnly, "提示")
                Exit Sub
            ElseIf ComboBox1.Text = "年龄范围" Then
                str = "C_StuAge"
            ElseIf ComboBox1.Text = "省份" Then
                str = "C_StuAddress"
            ElseIf ComboBox1.Text = "班级" Then
                str = "C_StuClass"
            ElseIf ComboBox1.Text = "性别" Then
                str = "C_StuSex"
            End If
            UserInfo.InquireStu = str

            If TextBox1.Text = "" Then
                MsgBox("请输入查询条件", MsgBoxStyle.OKOnly, "警告")
                Exit Sub
            End If
            Dim ds As New DataSet
            Dim aa As String
            'aa = "select * from T_Stu where " & str & " = '" & TextBox1.Text & "' "
            '  MsgBox(aa)
            ds = search.query("select * from T_Stu where " & str & " = '" & TextBox1.Text & "'")
            If ds.Tables(0).Rows.Count = 0 Then
                MsgBox("没有符合条件的学生，请尝试别的查询方式！", MsgBoxStyle.OKOnly, "提示")
            Else : DataGrid1.DataSource = ds.Tables(0)
            End If

        Catch ex As Exception
            MsgBox(ex.Message)

        End Try
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim s As String
        Dim ds As DataSet
        Dim str As String
        str = UserInfo.InquireStu

        s = DataGrid1.Item(DataGrid1.CurrentRowIndex, 0)
        Dim i As MsgBoxResult = MsgBox("确定要删除学生所有信息吗？", MsgBoxStyle.OKCancel, "警告")
        If i = MsgBoxResult.OK Then
            search.delete("delete from T_Stu where C_StuId = '" & s & "' ")
            MsgBox("已成功删除该学生信息！", MsgBoxStyle.OKOnly, "提示")
            ds = search.query("select * from T_Stu where " & str & " = '" & TextBox1.Text & "'")
            DataGrid1.DataSource = ds.Tables(0)
        End If
        If i = MsgBoxResult.Cancel Then
            Exit Sub

        End If
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Me.Dispose()

    End Sub

    Private Sub GroupBox1_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GroupBox1.Enter

    End Sub
End Class