form1.vb

奖学金评定系统

Imports System.Data.SqlClient
'引入ADO.NET操作命名空间
Public Class Form1
    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 TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents ErrorProvider1 As System.Windows.Forms.ErrorProvider
    <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.TextBox1 = New System.Windows.Forms.TextBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.ErrorProvider1 = New System.Windows.Forms.ErrorProvider
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.BackColor = System.Drawing.SystemColors.Control
        Me.Label1.Font = New System.Drawing.Font("华文彩云", 26.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.ForeColor = System.Drawing.SystemColors.Desktop
        Me.Label1.Location = New System.Drawing.Point(24, 16)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(240, 40)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "学籍管理系统"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(32, 88)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(56, 24)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "用户名"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(32, 136)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(56, 16)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "密  码"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(128, 80)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(120, 21)
        Me.TextBox1.TabIndex = 3
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(128, 128)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.PasswordChar = Microsoft.VisualBasic.ChrW(42)
        Me.TextBox2.Size = New System.Drawing.Size(120, 21)
        Me.TextBox2.TabIndex = 4
        Me.TextBox2.Text = ""
        '
        'Button1
        '
        Me.Button1.Cursor = System.Windows.Forms.Cursors.Hand
        Me.Button1.Location = New System.Drawing.Point(40, 192)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(64, 24)
        Me.Button1.TabIndex = 5
        Me.Button1.Text = "确定"
        '
        'Button2
        '
        Me.Button2.Cursor = System.Windows.Forms.Cursors.Hand
        Me.Button2.Location = New System.Drawing.Point(160, 192)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(64, 24)
        Me.Button2.TabIndex = 6
        Me.Button2.Text = "取消"
        '
        'ErrorProvider1
        '
        Me.ErrorProvider1.ContainerControl = Me
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(280, 221)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "登录"
        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
        tablename = "userID"  '表的名称
        SearchSQL = "SELECT 用户名, 密码 FROM userID WHERE (用户名 = '" & TextBox1.Text & " ') "
        Try
            Module1.ExecuteSQL(SearchSQL, tablename)  '查询函数

            If Module1.myrow.Item(1) = TextBox2.Text Then  '比较输入密码和数据库的密码
                Dim newform2 As New Form2
                newform2.Show()
                Me.Hide()
            Else
                Exit Sub
            End If
        Catch
            MsgBox("没有该用户", vbOKOnly + vbExclamation, "警告")
        End Try

    End Sub
    Private Sub TextBox1_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles TextBox1.Validating
        If TextBox1.Text = "" Then
            ErrorProvider1.SetError(TextBox1, "用户名不能为空")
        Else
            ErrorProvider1.SetError(TextBox1, "")
        End If
    End Sub

    Private Sub TextBox2_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles TextBox2.Validating
        If TextBox2.Text = "" Then
            ErrorProvider1.SetError(TextBox2, "密码不能为空")
        Else
            ErrorProvider1.SetError(TextBox2, "")
        End If
    End Sub
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Me.Dispose()
    End Sub
End Class