📄 form1.vb
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Imports System.Data
Imports System.Data.SqlClient
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 TextBox1 As System.Windows.Forms.TextBox
Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents Button2 As System.Windows.Forms.Button
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.TextBox1 = New System.Windows.Forms.TextBox
Me.TextBox2 = New System.Windows.Forms.TextBox
Me.Label1 = New System.Windows.Forms.Label
Me.Label2 = New System.Windows.Forms.Label
Me.Button1 = New System.Windows.Forms.Button
Me.Button2 = New System.Windows.Forms.Button
Me.SuspendLayout()
'
'TextBox1
'
Me.TextBox1.Location = New System.Drawing.Point(152, 88)
Me.TextBox1.Name = "TextBox1"
Me.TextBox1.Size = New System.Drawing.Size(104, 21)
Me.TextBox1.TabIndex = 0
Me.TextBox1.Text = ""
'
'TextBox2
'
Me.TextBox2.Location = New System.Drawing.Point(152, 144)
Me.TextBox2.Name = "TextBox2"
Me.TextBox2.Size = New System.Drawing.Size(104, 21)
Me.TextBox2.TabIndex = 1
Me.TextBox2.Text = ""
'
'Label1
'
Me.Label1.Location = New System.Drawing.Point(88, 88)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(56, 24)
Me.Label1.TabIndex = 2
Me.Label1.Text = "用户名:"
'
'Label2
'
Me.Label2.Location = New System.Drawing.Point(96, 144)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(56, 24)
Me.Label2.TabIndex = 3
Me.Label2.Text = "密码:"
'
'Button1
'
Me.Button1.Location = New System.Drawing.Point(104, 200)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(64, 24)
Me.Button1.TabIndex = 4
Me.Button1.Text = "确定"
'
'Button2
'
Me.Button2.Location = New System.Drawing.Point(200, 200)
Me.Button2.Name = "Button2"
Me.Button2.Size = New System.Drawing.Size(64, 24)
Me.Button2.TabIndex = 5
Me.Button2.Text = "取消"
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
Me.ClientSize = New System.Drawing.Size(296, 269)
Me.Controls.Add(Me.Button2)
Me.Controls.Add(Me.Button1)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.Label1)
Me.Controls.Add(Me.TextBox2)
Me.Controls.Add(Me.TextBox1)
Me.Name = "Form1"
Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
Me.Text = "登陆"
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'myds.Clear()
'mycon.Close()
Try
Dim sqlstr As String
sqlstr = "select * from userid"
execsql(sqlstr, "userid")
If TextBox1.Text = "" Then
MsgBox("请输入用户名")
Exit Sub
End If
Dim i As Integer
For i = 0 To mytable.Rows.Count - 1
If Trim(TextBox1.Text) = Trim(mytable.Rows(i).Item(0)) Then
Exit For
End If
Next
If Trim(TextBox2.Text) = Trim(mytable.Rows(i).Item(1)) Then
Me.Hide()
f.Show()
If Trim(mytable.Rows(i).Item(2)) = "1" Then
f.MenuItem10.Visible = True
f.MenuItem6.Visible = False
f.MenuItem22.Visible = True
myyh1 = Me.TextBox1.Text
'myds.Clear()
'mycon.Close()
Else
f.MenuItem6.Visible = True
f.MenuItem10.Visible = False
f.MenuItem22.Visible = False
myyh2 = Me.TextBox1.Text
'myds.Clear()
'mycon.Close()
Exit Sub
End If
If Me.TextBox1.Text <> "adm" Then
sqlstr = "select * from userid where 用户名='" & Trim(Me.TextBox1.Text) & "'"
If Not execsql(sqlstr, "userid") Then
myrow = myds.Tables("userid").NewRow
myrow("帐号") = Trim(Me.TextBox1.Text)
myds.Tables("userid").Rows.Add(myrow)
mycmb = New SqlCommandBuilder(mydad)
mydad.Update(myds, "userid")
myds.Clear()
mycon.Close()
End If
End If
mima = Me.TextBox2.Text
Else
MsgBox("密码错误")
TextBox2.Focus()
TextBox2.Clear()
End If
Catch ex As Exception
MsgBox("你输入的用户不存在")
TextBox1.Clear()
TextBox2.Clear()
TextBox1.Focus()
Exit Sub
End Try
myds.Clear()
mycon.Close()
End Sub
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = Chr(13) Then
Me.TextBox2.Focus()
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Close()
End Sub
'Private Sub Form1_Closed(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Closed
' End
'End Sub
End Class
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