quanxian.vb

一个基于SQL架构的管理系统

Imports System
Imports System.Data
Imports System.Data.SqlClient
Public Class Form21
    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 Label1 As System.Windows.Forms.Label
    Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Label4 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form21))
        Me.Label1 = New System.Windows.Forms.Label
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label3 = New System.Windows.Forms.Label
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Label4 = New System.Windows.Forms.Label
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("宋体", 15.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.ForeColor = System.Drawing.Color.Blue
        Me.Label1.Location = New System.Drawing.Point(48, 16)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(96, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "显示用户"
        '
        'DataGrid1
        '
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(0, 56)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(248, 304)
        Me.DataGrid1.TabIndex = 1
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(264, 88)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(56, 23)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "用户名"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(336, 88)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(80, 21)
        Me.TextBox1.TabIndex = 3
        Me.TextBox1.Text = ""
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(264, 144)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(48, 23)
        Me.Label3.TabIndex = 4
        Me.Label3.Text = "权限"
        '
        'ComboBox1
        '
        Me.ComboBox1.Items.AddRange(New Object() {"admin", "student", "teacher"})
        Me.ComboBox1.Location = New System.Drawing.Point(336, 144)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(80, 20)
        Me.ComboBox1.TabIndex = 5
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(264, 208)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(56, 23)
        Me.Button1.TabIndex = 6
        Me.Button1.Text = "修改"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(352, 208)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(56, 23)
        Me.Button2.TabIndex = 7
        Me.Button2.Text = "更新"
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(280, 176)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(136, 24)
        Me.Label4.TabIndex = 8
        '
        'Form21
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.Color.Teal
        Me.ClientSize = New System.Drawing.Size(440, 365)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.ComboBox1)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.DataGrid1)
        Me.Controls.Add(Me.Label1)
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.MaximizeBox = False
        Me.Name = "Form21"
        Me.Text = "权限修改"
        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
        If TextBox1.Text = "" Or ComboBox1.Text = "" Then
            Label4.Text = "请输入登陆名和想要更改的权限"
        Else
            changeQuanxian()
            Label4.Text = "修改成功，更新查看结果"
            TextBox1.Text = ""
            ComboBox1.Text = ""
        End If
    End Sub
    Sub changeQuanxian()
        Dim str As String
        'Dim frmName As String = "欢迎您"
        str = "Data Source=localhost;Initial Catalog = Student;integrated Security=true"
        Dim con As New SqlConnection(str)
        con.Open()
        Dim sql As String = "select * from user_Info where user_ID='" & TextBox1.Text.ToString().Trim() & "' "
        'and user_Des='" & sMenuText & "'
        Dim sql2 As String = "update user_Info set user_Des='" & ComboBox1.Text.ToString().Trim() & "' where user_ID='" & TextBox1.Text.ToString().Trim() & "' "
        'director='" & TextBox2.Text.ToString.Trim() & "' classroom_No='" & TextBox3.Text.ToString.Trim() & "'
        Dim cmd As New SqlCommand(sql, con)
        Dim cmd2 As New SqlCommand(sql2, con)

        Dim reader As SqlDataReader
        reader = cmd.ExecuteReader


        If reader.Read() = True Then
            reader.Close()
            'MsgBox("有记录")
            cmd2.ExecuteNonQuery()

            ' Me.Hide()
            'frm.Show()
            'frm1.Close()
            'frm.Text = "安徽建筑工业学院欢迎您---" & TextBox1.Text

        Else
            Label4.Text = "**该用户不存在**"
            'Label5.Text = "错误的用户名或密码"
        End If
    End Sub

    Private Sub Form21_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        connetcion()
    End Sub
    Sub connetcion()
        Dim str As String
        Dim ds As New DataSet
        Dim da As SqlDataAdapter
        'Dim frmName As String = "欢迎您"
        str = "Data Source=localhost;Initial Catalog = Student;integrated Security=true"
        Dim con As New SqlConnection(str)
        con.Open()
        Dim sql As String = "select * from user_Info "
        da = New SqlDataAdapter(sql, con)
        da.Fill(ds)
        DataGrid1.DataSource = ds.Tables(0)
    End Sub
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        connetcion()
    End Sub
End Class