adduser.vb

一个基于SQL架构的管理系统

Imports System
Imports System.Data
Imports System.Data.SqlClient
Public Class form3
    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 Button1 As System.Windows.Forms.Button
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents Label7 As System.Windows.Forms.Label
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(form3))
        Me.Label1 = New System.Windows.Forms.Label
        Me.Button1 = New System.Windows.Forms.Button
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.TextBox3 = New System.Windows.Forms.TextBox
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label6 = New System.Windows.Forms.Label
        Me.Label7 = New System.Windows.Forms.Label
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(24, 40)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(80, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用户名"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(24, 248)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "确认"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(112, 40)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.TabIndex = 2
        Me.TextBox1.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(24, 88)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(64, 23)
        Me.Label2.TabIndex = 3
        Me.Label2.Text = "用户密码"
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(112, 88)
        Me.TextBox2.MaxLength = 10
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox2.TabIndex = 4
        Me.TextBox2.Text = ""
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(24, 184)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(72, 23)
        Me.Label3.TabIndex = 5
        Me.Label3.Text = "用户类别"
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(24, 136)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(56, 23)
        Me.Label4.TabIndex = 6
        Me.Label4.Text = "密码确认"
        '
        'TextBox3
        '
        Me.TextBox3.Location = New System.Drawing.Point(112, 136)
        Me.TextBox3.MaxLength = 10
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox3.TabIndex = 7
        Me.TextBox3.Text = ""
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(120, 248)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 9
        Me.Button2.Text = "重填"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(224, 248)
        Me.Button3.Name = "Button3"
        Me.Button3.TabIndex = 10
        Me.Button3.Text = "关闭"
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(224, 40)
        Me.Label5.Name = "Label5"
        Me.Label5.TabIndex = 11
        '
        'Label6
        '
        Me.Label6.Location = New System.Drawing.Point(216, 136)
        Me.Label6.Name = "Label6"
        Me.Label6.TabIndex = 12
        '
        'Label7
        '
        Me.Label7.Location = New System.Drawing.Point(216, 184)
        Me.Label7.Name = "Label7"
        Me.Label7.TabIndex = 13
        '
        'ComboBox1
        '
        Me.ComboBox1.Items.AddRange(New Object() {"admin", "student", "teacher"})
        Me.ComboBox1.Location = New System.Drawing.Point(112, 184)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(104, 20)
        Me.ComboBox1.TabIndex = 14
        '
        'form3
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.Color.Teal
        Me.ClientSize = New System.Drawing.Size(320, 301)
        Me.Controls.Add(Me.ComboBox1)
        Me.Controls.Add(Me.Label7)
        Me.Controls.Add(Me.Label6)
        Me.Controls.Add(Me.Label5)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.TextBox3)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.Label1)
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.Name = "form3"
        Me.Text = "添加用户"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        clear()
    End Sub
    Sub clear()
        TextBox1.Text = ""
        TextBox2.Text = ""
        TextBox3.Text = ""
        ComboBox1.Text = ""
    End Sub
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Me.Close()
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        checkFormat()
    End Sub
    Sub checkFormat()
        If TextBox1.Text = "" Then
            Label5.Text = "用户名不能为空"
        ElseIf TextBox1.Text.Length > 10 Then
            Label5.Text = "用户名不能大于10"
        ElseIf TextBox2.Text = "" Or TextBox3.Text = "" Then
            '对用户名唯一的判断
            Label6.Text = "密码不能为空"
        ElseIf TextBox2.Text <> TextBox3.Text Then
            Label6.Text = "密码不一致，请重新输入！"
        ElseIf ComboBox1.Text = "" Then
            Label7.Text = "必须选择一个用户类别"

        Else
            singleYanzheng()

            
        End If

    End Sub
    Sub singleYanzheng()
        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 cmd As New SqlCommand(sql, con)
        Dim reader As SqlDataReader
        reader = cmd.ExecuteReader

        If reader.Read() = True Then
            
            'txb1 = ComboBox1.Text.ToString.Trim()

            'frm1.Close()
            MsgBox("该用户已存在")


        Else
            addRecord()
            MsgBox("success!")
            clear()

        End If

    End Sub
    Sub addRecord()
        Dim str As String
        'Dim cmd As New CommandType

        '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 = "insert into user_Info values('" & TextBox1.Text.ToString().Trim() & "','" & TextBox2.Text.ToString().Trim() & " ','" & ComboBox1.Text.ToString().Trim() & "') "
        'and user_Des='" & sMenuText & "'
        'cmd.CommandText = "INSERT INTO member(呢称, 密码, 电子邮件)VALUES ('"& Txtname.Text & "','" & txtpass.Text & "', '" & Txtemail.Text & "')" 
        Dim cmd As New SqlCommand(sql, con)

        Try

            cmd.ExecuteNonQuery()  '执行插入动作

        Catch e As Exception

            Console.WriteLine(e.Message) '无法执行时提示出错信息

        End Try

        Console.WriteLine("Record Added")
        'cmd.ExecuteNonQuery()
    End Sub

    Private Sub form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class