changecourseinfo.vb

vb.net的学生信息管理系统,功能很强大,是一个比较好的系统.

Imports System
Imports System.Data
Imports System.Data.SqlClient
Public Class Form12
    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 Button3 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form12))
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button1 = New System.Windows.Forms.Button
        Me.TextBox3 = New System.Windows.Forms.TextBox
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(205, 233)
        Me.Button3.Name = "Button3"
        Me.Button3.TabIndex = 21
        Me.Button3.Text = "关闭"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(109, 233)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 20
        Me.Button2.Text = "重添"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(13, 233)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 19
        Me.Button1.Text = "修改"
        '
        'TextBox3
        '
        Me.TextBox3.Location = New System.Drawing.Point(109, 145)
        Me.TextBox3.Multiline = True
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(100, 56)
        Me.TextBox3.TabIndex = 18
        Me.TextBox3.Text = ""
        '
        'ComboBox1
        '
        Me.ComboBox1.Items.AddRange(New Object() {"工科", "文学", "理工", "农学", "外贸", "动物学", "植物学"})
        Me.ComboBox1.Location = New System.Drawing.Point(109, 97)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(104, 20)
        Me.ComboBox1.TabIndex = 17
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(21, 145)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(64, 23)
        Me.Label4.TabIndex = 16
        Me.Label4.Text = "课程描述"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(21, 97)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(64, 23)
        Me.Label3.TabIndex = 15
        Me.Label3.Text = "课程类型"
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(109, 57)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.TabIndex = 14
        Me.TextBox2.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(21, 57)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(72, 23)
        Me.Label2.TabIndex = 13
        Me.Label2.Text = "课程名"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(109, 17)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.TabIndex = 12
        Me.TextBox1.Text = ""
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(21, 17)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(72, 23)
        Me.Label1.TabIndex = 11
        Me.Label1.Text = "课程号"
        '
        'Form12
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.Color.Teal
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TextBox3)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.ComboBox1)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.MaximizeBox = False
        Me.Name = "Form12"
        Me.Text = "课程信息修改"
        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 = ""
        ComboBox1.Text = ""
        TextBox3.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
        If TextBox1.Text = "" Then
            MsgBox("课程号不能为空")
        Else
            changCourseInfo()
            MsgBox("success")
           clear()
        End If


    End Sub
    Sub changCourseInfo()
        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 course_Info where course_No='" & TextBox1.Text.ToString().Trim() & "' "
        'and user_Des='" & sMenuText & "'
        Dim sql2 As String = "update course_Info set course_Name='" & TextBox2.Text.ToString().Trim() & "',course_Type='" & ComboBox1.Text.ToString.Trim() & "',course_Des='" & TextBox3.Text.ToString.Trim() & "'  where course_No='" & 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
            MsgBox("该课程不存在！")
            'Label5.Text = "错误的用户名或密码"
        End If
    End Sub



End Class