frmproduct.vb

VB写的进销存管理系统

        Me.txtPModel.Size = New System.Drawing.Size(320, 21)
        Me.txtPModel.TabIndex = 46
        Me.txtPModel.Text = ""
        '
        'Label8
        '
        Me.Label8.ForeColor = System.Drawing.Color.Red
        Me.Label8.Location = New System.Drawing.Point(256, 8)
        Me.Label8.Name = "Label8"
        Me.Label8.Size = New System.Drawing.Size(400, 24)
        Me.Label8.TabIndex = 47
        Me.Label8.Text = "前面带※的必须填写！"
        '
        'frmProduct
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(440, 182)
        Me.Controls.Add(Me.Label8)
        Me.Controls.Add(Me.txtPModel)
        Me.Controls.Add(Me.txtPName)
        Me.Controls.Add(Me.txtFId)
        Me.Controls.Add(Me.txtPId)
        Me.Controls.Add(Me.Label7)
        Me.Controls.Add(Me.Label5)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.bunUpdate)
        Me.Controls.Add(Me.bunNext)
        Me.Controls.Add(Me.bunCancel)
        Me.Controls.Add(Me.bunSave)
        Me.Controls.Add(Me.bunSearch)
        Me.Controls.Add(Me.bunDelete)
        Me.Controls.Add(Me.bunAdd)
        Me.Controls.Add(Me.bunPrevious)
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.Name = "frmProduct"
        Me.Text = "商品数据表"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Private myDataAdapter As New SqlClient.SqlDataAdapter
    Private myDataReader As SqlClient.SqlDataReader
    Private myDataSet As DataSet = New DataSet("Product")
    Private TableName As String
    Private myIndex As Integer = 0
    Private RowsMax As Integer
    Private Sub Pshowfield()
        Dim currRows() As DataRow = myDataSet.Tables(0).Select(Nothing, Nothing, DataViewRowState.CurrentRows)
        Dim myRow As DataRow = currRows(myIndex)
        txtPId.Text = myRow(0)
        txtFId.Text = myRow(1)
        txtPName.Text = myRow(2)
        txtPModel.Text = myRow(3)
    End Sub
    Private Sub bunCancel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunCancel.Click
        On Error GoTo ErrorHandle
        If RowsMax < 0 Then
            txtPId.Text = ""
            txtFId.Text = ""
            txtPName.Text = ""
            txtPModel.Text = ""
            Exit Sub
        End If
        Pshowfield()
        Exit Sub
ErrorHandle:
        ShowErr()
    End Sub
    Private Sub bunDelete_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunDelete.Click
        On Error GoTo ErrorHandle
        If RowsMax < 0 Then
            MsgBox("库中没有可删除的记录！", , "商品数据表")
            Exit Sub
        End If
        If MsgBox("是否删除？", 36, "提示") = vbYes Then
            Dim myRow As DataRow = myDataSet.Tables(0).Rows(myIndex)
            Dim strsql As String = "delete from product where p_id='" & myRow("p_id") & "'"
            Dim mycommand As New SqlClient.SqlCommand(strsql, db)
            db.Open()
            mycommand.ExecuteNonQuery()
            db.Close()
            myRow.Delete()
            myDataSet.AcceptChanges()
            RowsMax = RowsMax - 1
            If RowsMax >= 0 Then
                myIndex = myIndex - 1
                Pshowfield()
                Exit Sub
            Else
                txtPId.Text = ""
                txtPName.Text = ""
                txtFId.Text = ""
                txtPModel.Text = ""
                bunPrevious.Enabled = False
                bunDelete.Enabled = False
                bunSearch.Enabled = False
                bunSave.Enabled = False
                bunNext.Enabled = False
                Exit Sub
            End If
        Else
            Exit Sub
        End If
        Exit Sub
ErrorHandle:
        ShowErr()
    End Sub
    Private Sub bunNext_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunNext.Click
        On Error Resume Next
        If myIndex < RowsMax Then
            myIndex = myIndex + 1
        End If
        Pshowfield()
    End Sub
    Private Sub bunPrevious_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunPrevious.Click
        On Error Resume Next
        If myIndex > 0 Then
            myIndex = myIndex - 1
        End If
        Pshowfield()
    End Sub
    Private Sub bunSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunSave.Click
        On Error GoTo ErrorHandle
        Dim myRow As DataRow = myDataSet.Tables(0).Rows(myIndex)
        myRow("p_id") = txtPId.Text
        myRow("f_id") = txtFId.Text
        myRow("p_name") = txtPName.Text
        myRow("p_model") = txtPModel.Text
        myDataSet.AcceptChanges()
        Dim strsql As String = "update product set f_id='" & myRow("f_id") & "', p_name='" & myRow("p_name") & "', p_model=" & myRow("p_model") & "' where p_id='" & myRow("p_id") & "'"
        Dim mycommand As New SqlClient.SqlCommand(strsql, db)
        db.Open()
        mycommand.ExecuteNonQuery()
        db.Close()
        MsgBox("已经保存修改", , "商品数据表")
        Exit Sub
ErrorHandle:
        ShowErr()
    End Sub
    Private Sub bunSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunSearch.Click
        On Error GoTo ErrorHandle
        Dim IDQuery As String
        Dim NameQuery As String
        Dim myRow As DataRow
        myIndex = 0
        IDQuery = InputBox("输入要搜索的商品编号：", "按商品ID搜索")
            Dim currRows() As DataRow = myDataSet.Tables(0).Select(Nothing, Nothing, DataViewRowState.CurrentRows)
            For Each myRow In currRows
            If myRow("p_id") Like "*" & LCase(IDQuery) & "*" Then
                Pshowfield()
                Exit Sub
            Else
                myIndex = myIndex + 1
            End If
        Next
            MsgBox("没有找到符合条件的记录", , "商品数据表")
            Exit Sub
        Exit Sub
ErrorHandle:
        ShowErr()
    End Sub
    Private Sub frmFactory_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Activated
        ShowStatus("数据管理－－", "商品数据表")
    End Sub

    Private Sub frmFactory_Closed(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Closed
        Me.Dispose()
        Me.Close()
        ShowStatus("", "")
        ProductTableOpened = False
        TableMenuEnable()
    End Sub

    Private Sub frmProduct_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
        TableName = CurrentTable
        Dim strSelectProduct As String = "select * from Product"
        Dim cmdSelectProduct As New SqlClient.SqlCommand(strSelectProduct, db)
        myDataAdapter.SelectCommand = cmdSelectProduct
        Dim xx As SqlCommandBuilder = New SqlCommandBuilder(myDataAdapter)
        db.Open()
        myDataAdapter.Fill(myDataSet)
        db.Close()
        bunAdd.Enabled = False
        Dim currRows() As DataRow = myDataSet.Tables(0).Select(Nothing, Nothing, DataViewRowState.CurrentRows)
        RowsMax = currRows.Length - 1
        If RowsMax < 0 Then
            myIndex = -1
            MsgBox("数据库中没有记录", , "商品数据表")
            bunPrevious.Enabled = False
            bunDelete.Enabled = False
            bunSearch.Enabled = False
            bunSave.Enabled = False
            bunNext.Enabled = False
        Else
            Pshowfield()
        End If
    End Sub
    Private Sub bunUpdate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bunUpdate.Click
        db.Open()
        myDataAdapter.Update(myDataSet)
        db.Close()
        MsgBox("已经更新到数据库", , "商品数据表")
    End Sub
End Class