deluser.vb

一个很不错的学生管理系统

Public Class DelUser
    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 Button1 As System.Windows.Forms.Button
    Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents Button2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.Button2 = New System.Windows.Forms.Button
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(48, 16)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(120, 32)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "查看用户列表"
        '
        'DataGrid1
        '
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(8, 56)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(344, 184)
        Me.DataGrid1.TabIndex = 1
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(184, 16)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(120, 32)
        Me.Button2.TabIndex = 2
        Me.Button2.Text = "删除该用户"
        '
        'DelUser
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(360, 253)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.DataGrid1)
        Me.Controls.Add(Me.Button1)
        Me.Name = "DelUser"
        Me.Text = "查看/删除用户"
        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
        Dim ds As DataSet
        ds = search.query("select C_UserId,C_UserName,C_Style from T_User ")
        DataGrid1.DataSource = ds.Tables(0)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim str As String
        Dim ds As DataSet
        str = DataGrid1.Item(DataGrid1.CurrentRowIndex, 0)
        Dim i As MsgBoxResult = MsgBox("确定要删除该用户吗？", MsgBoxStyle.OKCancel, "警告")
        If i = MsgBoxResult.OK Then
            search.delete("delete from T_User where C_UserId = '" & str & "' ")
            MsgBox("已成功删除该用户！", MsgBoxStyle.OKOnly, "提示")
            ds = search.query("select C_UserId,C_UserName,C_Style from T_User ")
            DataGrid1.DataSource = ds.Tables(0)
        End If
        If i = MsgBoxResult.Cancel Then
            Exit Sub

        End If
    End Sub
End Class