form4.vb

来自「是一个工资的管理系统 利用的是VB.NET和sql2000来完成的」· VB 代码 · 共 270 行

Public Class Form4
    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 DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents SqlDataAdapter1 As System.Data.SqlClient.SqlDataAdapter
    Friend WithEvents SqlSelectCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlInsertCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlUpdateCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlDeleteCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlConnection1 As System.Data.SqlClient.SqlConnection
    Friend WithEvents Ds31 As 学生选课.ds3
    Friend WithEvents Panel1 As System.Windows.Forms.Panel
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form4))
        Me.Label1 = New System.Windows.Forms.Label
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.Ds31 = New 学生选课.ds3
        Me.Button1 = New System.Windows.Forms.Button
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.SqlDataAdapter1 = New System.Data.SqlClient.SqlDataAdapter
        Me.SqlDeleteCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlConnection1 = New System.Data.SqlClient.SqlConnection
        Me.SqlInsertCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlSelectCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlUpdateCommand1 = New System.Data.SqlClient.SqlCommand
        Me.Panel1 = New System.Windows.Forms.Panel
        Me.Button4 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.Ds31, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.Panel1.SuspendLayout()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Anchor = System.Windows.Forms.AnchorStyles.None
        Me.Label1.Font = New System.Drawing.Font("楷体_GB2312", 18.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(208, 32)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(120, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "课程信息"
        '
        'DataGrid1
        '
        Me.DataGrid1.Anchor = System.Windows.Forms.AnchorStyles.None
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.DataSource = Me.Ds31.course
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(56, 80)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(448, 136)
        Me.DataGrid1.TabIndex = 1
        '
        'Ds31
        '
        Me.Ds31.DataSetName = "ds3"
        Me.Ds31.Locale = New System.Globalization.CultureInfo("zh-CN")
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(88, 304)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "确定"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(64, 256)
        Me.Label2.Name = "Label2"
        Me.Label2.TabIndex = 3
        Me.Label2.Text = "请输入课程号："
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(224, 256)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(104, 21)
        Me.TextBox1.TabIndex = 4
        Me.TextBox1.Text = ""
        '
        'SqlDataAdapter1
        '
        Me.SqlDataAdapter1.DeleteCommand = Me.SqlDeleteCommand1
        Me.SqlDataAdapter1.InsertCommand = Me.SqlInsertCommand1
        Me.SqlDataAdapter1.SelectCommand = Me.SqlSelectCommand1
        Me.SqlDataAdapter1.TableMappings.AddRange(New System.Data.Common.DataTableMapping() {New System.Data.Common.DataTableMapping("Table", "course", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("cno", "cno"), New System.Data.Common.DataColumnMapping("cname", "cname"), New System.Data.Common.DataColumnMapping("cpno", "cpno"), New System.Data.Common.DataColumnMapping("ccredit", "ccredit")})})
        Me.SqlDataAdapter1.UpdateCommand = Me.SqlUpdateCommand1
        '
        'SqlDeleteCommand1
        '
        Me.SqlDeleteCommand1.CommandText = "DELETE FROM course WHERE (cno = @Original_cno) AND (ccredit = @Original_ccredit O" & _
        "R @Original_ccredit IS NULL AND ccredit IS NULL) AND (cname = @Original_cname OR" & _
        " @Original_cname IS NULL AND cname IS NULL) AND (cpno = @Original_cpno OR @Origi" & _
        "nal_cpno IS NULL AND cpno IS NULL)"
        Me.SqlDeleteCommand1.Connection = Me.SqlConnection1
        Me.SqlDeleteCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_cno", System.Data.SqlDbType.VarChar, 10, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "cno", System.Data.DataRowVersion.Original, Nothing))
        Me.SqlDeleteCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_ccredit", System.Data.SqlDbType.VarChar, 8, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ccredit", System.Data.DataRowVersion.Original, Nothing))
        Me.SqlDeleteCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_cname", System.Data.SqlDbType.VarChar, 20, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "cname", System.Data.DataRowVersion.Original, Nothing))
        Me.SqlDeleteCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_cpno", System.Data.SqlDbType.VarChar, 10, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "cpno", System.Data.DataRowVersion.Original, Nothing))
        '
        'SqlConnection1
        '
        Me.SqlConnection1.ConnectionString = "workstation id=LYQAWM;packet size=4096;integrated security=SSPI;data source=""(loc" & _
        "al)"";persist security info=False;initial catalog=学生选课"
        '
        'SqlInsertCommand1
        '
        Me.SqlInsertCommand1.CommandText = "INSERT INTO course(cno, cname, cpno, ccredit) VALUES (@cno, @cname, @cpno, @ccred" & _
        "it); SELECT cno, cname, cpno, ccredit FROM course WHERE (cno = @cno) ORDER BY cn" & _
        "o"
        Me.SqlInsertCommand1.Connection = Me.SqlConnection1
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@cno", System.Data.SqlDbType.VarChar, 10, "cno"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@cname", System.Data.SqlDbType.VarChar, 20, "cname"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@cpno", System.Data.SqlDbType.VarChar, 10, "cpno"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@ccredit", System.Data.SqlDbType.VarChar, 8, "ccredit"))
        '
        'SqlSelectCommand1
        '
        Me.SqlSelectCommand1.CommandText = "SELECT cno, cname, cpno, ccredit FROM course ORDER BY cno"
        Me.SqlSelectCommand1.Connection = Me.SqlConnection1
        '
        'SqlUpdateCommand1
        '
        Me.SqlUpdateCommand1.CommandText = "UPDATE course SET cno = @cno, cname = @cname, cpno = @cpno, ccredit = @ccredit WH" & _
        "ERE (cno = @Original_cno) AND (ccredit = @Original_ccredit OR @Original_ccredit " & _
        "IS NULL AND ccredit IS NULL) AND (cname = @Original_cname OR @Original_cname IS " & _
        "NULL AND cname IS NULL) AND (cpno = @Original_cpno OR @Original_cpno IS NULL AND" & _
        " cpno IS NULL); SELECT cno, cname, cpno, ccredit FROM course WHERE (cno = @cno) " & _
        "ORDER BY cno"
        Me.SqlUpdateCommand1.Connection = Me.SqlConnection1
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@cno", System.Data.SqlDbType.VarChar, 10, "cno"))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@cname", System.Data.SqlDbType.VarChar, 20, "cname"))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@cpno", System.Data.SqlDbType.VarChar, 10, "cpno"))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@ccredit", System.Data.SqlDbType.VarChar, 8, "ccredit"))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_cno", System.Data.SqlDbType.VarChar, 10, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "cno", System.Data.DataRowVersion.Original, Nothing))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_ccredit", System.Data.SqlDbType.VarChar, 8, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ccredit", System.Data.DataRowVersion.Original, Nothing))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_cname", System.Data.SqlDbType.VarChar, 20, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "cname", System.Data.DataRowVersion.Original, Nothing))
        Me.SqlUpdateCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@Original_cpno", System.Data.SqlDbType.VarChar, 10, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "cpno", System.Data.DataRowVersion.Original, Nothing))
        '
        'Panel1
        '
        Me.Panel1.Anchor = System.Windows.Forms.AnchorStyles.None
        Me.Panel1.Controls.Add(Me.Button4)
        Me.Panel1.Controls.Add(Me.Button3)
        Me.Panel1.Controls.Add(Me.Button1)
        Me.Panel1.Controls.Add(Me.TextBox1)
        Me.Panel1.Controls.Add(Me.Label2)
        Me.Panel1.Controls.Add(Me.DataGrid1)
        Me.Panel1.Controls.Add(Me.Label1)
        Me.Panel1.Location = New System.Drawing.Point(32, 16)
        Me.Panel1.Name = "Panel1"
        Me.Panel1.Size = New System.Drawing.Size(552, 336)
        Me.Panel1.TabIndex = 6
        '
        'Button4
        '
        Me.Button4.Location = New System.Drawing.Point(296, 304)
        Me.Button4.Name = "Button4"
        Me.Button4.TabIndex = 7
        Me.Button4.Text = "返回首页"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(184, 304)
        Me.Button3.Name = "Button3"
        Me.Button3.TabIndex = 6
        Me.Button3.Text = "所有课程"
        '
        'Form4
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(624, 389)
        Me.Controls.Add(Me.Panel1)
        Me.Icon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
        Me.Name = "Form4"
        Me.Text = "选课"
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.Ds31, System.ComponentModel.ISupportInitialize).EndInit()
        Me.Panel1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            If Trim(TextBox1.Text) = "" Then
                Exit Sub
            End If
            SqlDataAdapter1.SelectCommand.CommandText = "select * from course where cno like '" & TextBox1.Text & "'"
            Ds31.Clear()
            SqlDataAdapter1.Fill(Ds31, "course")
            Me.DataGrid1.Select(DataGrid1.CurrentRowIndex)
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
    End Sub


    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Try
            SqlDataAdapter1.SelectCommand.CommandText = "select * from course"
            Ds31.Clear()
            SqlDataAdapter1.Fill(Ds31)
            Me.DataGrid1.Select(DataGrid1.CurrentRowIndex)
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        Dim q As New Form2
        q.Show()
        Me.Hide()
    End Sub

   
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
       
    End Sub

    Private Sub Form4_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        e.Cancel = True
        Dim ob_form As New Form2
        Me.Hide()
        ob_form.Show()
    End Sub

    Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click

    End Sub
End Class