frmadduser.vb

是一套开发的VB的学生成绩管理系统,希望有需要的人去参考

Imports System.Data.SqlClient
Public Class frmadduser
    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 Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents txtusername As System.Windows.Forms.TextBox
    Friend WithEvents txtuserpassword As System.Windows.Forms.TextBox
    Friend WithEvents txtcomfirmpassword As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Button1 = New System.Windows.Forms.Button
        Me.txtusername = New System.Windows.Forms.TextBox
        Me.txtuserpassword = New System.Windows.Forms.TextBox
        Me.txtcomfirmpassword = New System.Windows.Forms.TextBox
        Me.Button2 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(8, 32)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(48, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "用户名"
        Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(0, 72)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(56, 23)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "密码"
        Me.Label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(0, 112)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(56, 23)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "确认密码"
        Me.Label3.TextAlign = System.Drawing.ContentAlignment.MiddleRight
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(16, 184)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 3
        Me.Button1.Text = "确定"
        '
        'txtusername
        '
        Me.txtusername.Location = New System.Drawing.Point(88, 32)
        Me.txtusername.Name = "txtusername"
        Me.txtusername.TabIndex = 4
        Me.txtusername.Text = ""
        '
        'txtuserpassword
        '
        Me.txtuserpassword.Location = New System.Drawing.Point(88, 72)
        Me.txtuserpassword.Name = "txtuserpassword"
        Me.txtuserpassword.TabIndex = 5
        Me.txtuserpassword.Text = ""
        '
        'txtcomfirmpassword
        '
        Me.txtcomfirmpassword.Location = New System.Drawing.Point(88, 112)
        Me.txtcomfirmpassword.Name = "txtcomfirmpassword"
        Me.txtcomfirmpassword.TabIndex = 6
        Me.txtcomfirmpassword.Text = ""
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(144, 184)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 7
        Me.Button2.Text = "取消"
        '
        'frmadduser
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.txtcomfirmpassword)
        Me.Controls.Add(Me.txtuserpassword)
        Me.Controls.Add(Me.txtusername)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Name = "frmadduser"
        Me.Text = "frmadduser"
        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 tablename As String = "userinfo"
        searchsql = "select count(*) from userinfo where userid='" & txtusername.Text & "'"
        Module1.executesql(searchsql, tablename)
        If Module1.myrow.Item(0) = 1 Then
            MsgBox("用户已存在" + Chr(10) + "请重试", vbOKOnly + vbExclamation, "警告")
            Exit Sub
        End If
        searchsql = "select userID,password from UserInfo"
        MsgBox(searchsql)
        Module1.executesql(searchsql, tablename)

        If txtcomfirmpassword.Text <> txtuserpassword.Text Then
            MsgBox("前后密码不一致，请重试")
            Exit Sub
        End If
       
        Dim newrow As DataRow
        newrow = Module1.mytable.NewRow
        newrow.Item(0) = Trim(txtusername.Text)
        newrow.Item(1) = Trim(txtuserpassword.Text)
        mytable.Rows.Add(newrow)

        Module1.sqlcmd = New SqlCommandBuilder(Module1.sqladapter)
        Module1.sqladapter.Update(Module1.ds, tablename)
        MsgBox("添加成功", vbOKOnly + vbExclamation, "信息框")

    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