dataform1.vb

vb 应用实例 简单应用 ddddddddddddddddddddddddddddddddd

Public Class DataForm1
    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

    '窗体重写处置以清理组件列表。
    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 OleDbSelectCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbInsertCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbUpdateCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbDeleteCommand1 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbSelectCommand2 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbInsertCommand2 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbUpdateCommand2 As System.Data.OleDb.OleDbCommand
    Friend WithEvents OleDbDeleteCommand2 As System.Data.OleDb.OleDbCommand
    Friend WithEvents objMyDS As Validating.MyDS
    Friend WithEvents OleDbConnection1 As System.Data.OleDb.OleDbConnection
    Friend WithEvents OleDbDataAdapter1 As System.Data.OleDb.OleDbDataAdapter
    Friend WithEvents OleDbDataAdapter2 As System.Data.OleDb.OleDbDataAdapter
    Friend WithEvents btnLoad As System.Windows.Forms.Button
    Friend WithEvents btnUpdate As System.Windows.Forms.Button
    Friend WithEvents btnCancelAll As System.Windows.Forms.Button
    Friend WithEvents grdCategories As System.Windows.Forms.DataGrid
    Friend WithEvents objTableStylegrdCategoriesCategories As System.Windows.Forms.DataGridTableStyle
    Friend WithEvents objColumnStylegrdCategoriesCategoryID As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdCategoriesCategoryName As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdCategoriesDescription As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents grdProducts As System.Windows.Forms.DataGrid
    Friend WithEvents objTableStylegrdProductsProducts As System.Windows.Forms.DataGridTableStyle
    Friend WithEvents objColumnStylegrdProductsProductID As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsProductName As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsCategoryID As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsQuantityPerUnit As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsUnitPrice As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsUnitsInStock As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsUnitsOnOrder As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsReorderLevel As System.Windows.Forms.DataGridTextBoxColumn
    Friend WithEvents objColumnStylegrdProductsDiscontinued As System.Windows.Forms.DataGridTextBoxColumn
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.OleDbSelectCommand1 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbInsertCommand1 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbUpdateCommand1 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbDeleteCommand1 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbSelectCommand2 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbInsertCommand2 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbUpdateCommand2 = New System.Data.OleDb.OleDbCommand()
        Me.OleDbDeleteCommand2 = New System.Data.OleDb.OleDbCommand()
        Me.objMyDS = New Validating.MyDS()
        Me.OleDbConnection1 = New System.Data.OleDb.OleDbConnection()
        Me.OleDbDataAdapter1 = New System.Data.OleDb.OleDbDataAdapter()
        Me.OleDbDataAdapter2 = New System.Data.OleDb.OleDbDataAdapter()
        Me.btnLoad = New System.Windows.Forms.Button()
        Me.btnUpdate = New System.Windows.Forms.Button()
        Me.btnCancelAll = New System.Windows.Forms.Button()
        Me.grdCategories = New System.Windows.Forms.DataGrid()
        Me.objTableStylegrdCategoriesCategories = New System.Windows.Forms.DataGridTableStyle()
        Me.objColumnStylegrdCategoriesCategoryID = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdCategoriesCategoryName = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdCategoriesDescription = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.grdProducts = New System.Windows.Forms.DataGrid()
        Me.objTableStylegrdProductsProducts = New System.Windows.Forms.DataGridTableStyle()
        Me.objColumnStylegrdProductsProductID = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsProductName = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsCategoryID = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsQuantityPerUnit = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsUnitPrice = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsUnitsInStock = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsUnitsOnOrder = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsReorderLevel = New System.Windows.Forms.DataGridTextBoxColumn()
        Me.objColumnStylegrdProductsDiscontinued = New System.Windows.Forms.DataGridTextBoxColumn()
        CType(Me.objMyDS, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.grdCategories, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.grdProducts, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'OleDbSelectCommand1
        '
        Me.OleDbSelectCommand1.CommandText = "SELECT ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice" & _
        ", UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued FROM Products"
        Me.OleDbSelectCommand1.Connection = Me.OleDbConnection1
        '
        'OleDbInsertCommand1
        '
        Me.OleDbInsertCommand1.CommandText = "INSERT INTO Products(ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPr" & _
        "ice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued) VALUES (?, ?, ?, ?," & _
        " ?, ?, ?, ?, ?); SELECT ProductID, ProductName, SupplierID, CategoryID, Quantity" & _
        "PerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued FROM " & _
        "Products WHERE (ProductID = @@IDENTITY)"
        Me.OleDbInsertCommand1.Connection = Me.OleDbConnection1
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("ProductName", System.Data.OleDb.OleDbType.VarWChar, 40, "ProductName"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("SupplierID", System.Data.OleDb.OleDbType.Integer, 4, "SupplierID"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("CategoryID", System.Data.OleDb.OleDbType.Integer, 4, "CategoryID"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("QuantityPerUnit", System.Data.OleDb.OleDbType.VarWChar, 20, "QuantityPerUnit"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("UnitPrice", System.Data.OleDb.OleDbType.Currency, 8, "UnitPrice"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("UnitsInStock", System.Data.OleDb.OleDbType.SmallInt, 2, "UnitsInStock"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("UnitsOnOrder", System.Data.OleDb.OleDbType.SmallInt, 2, "UnitsOnOrder"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("ReorderLevel", System.Data.OleDb.OleDbType.SmallInt, 2, "ReorderLevel"))
        Me.OleDbInsertCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Discontinued", System.Data.OleDb.OleDbType.Boolean, 1, "Discontinued"))
        '
        'OleDbUpdateCommand1
        '
        Me.OleDbUpdateCommand1.CommandText = "UPDATE Products SET ProductName = ?, SupplierID = ?, CategoryID = ?, QuantityPerU" & _
        "nit = ?, UnitPrice = ?, UnitsInStock = ?, UnitsOnOrder = ?, ReorderLevel = ?, Di" & _
        "scontinued = ? WHERE (ProductID = ?) AND (CategoryID = ? OR ? IS NULL AND Catego" & _
        "ryID IS NULL) AND (Discontinued = ?) AND (ProductName = ?) AND (QuantityPerUnit " & _
        "= ? OR ? IS NULL AND QuantityPerUnit IS NULL) AND (ReorderLevel = ? OR ? IS NULL" & _
        " AND ReorderLevel IS NULL) AND (SupplierID = ? OR ? IS NULL AND SupplierID IS NU" & _
        "LL) AND (UnitPrice = ? OR ? IS NULL AND UnitPrice IS NULL) AND (UnitsInStock = ?" & _
        " OR ? IS NULL AND UnitsInStock IS NULL) AND (UnitsOnOrder = ? OR ? IS NULL AND U" & _
        "nitsOnOrder IS NULL); SELECT ProductID, ProductName, SupplierID, CategoryID, Qua" & _
        "ntityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued " & _
        "FROM Products WHERE (ProductID = ?)"
        Me.OleDbUpdateCommand1.Connection = Me.OleDbConnection1
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("ProductName", System.Data.OleDb.OleDbType.VarWChar, 40, "ProductName"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("SupplierID", System.Data.OleDb.OleDbType.Integer, 4, "SupplierID"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("CategoryID", System.Data.OleDb.OleDbType.Integer, 4, "CategoryID"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("QuantityPerUnit", System.Data.OleDb.OleDbType.VarWChar, 20, "QuantityPerUnit"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("UnitPrice", System.Data.OleDb.OleDbType.Currency, 8, "UnitPrice"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("UnitsInStock", System.Data.OleDb.OleDbType.SmallInt, 2, "UnitsInStock"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("UnitsOnOrder", System.Data.OleDb.OleDbType.SmallInt, 2, "UnitsOnOrder"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("ReorderLevel", System.Data.OleDb.OleDbType.SmallInt, 2, "ReorderLevel"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Discontinued", System.Data.OleDb.OleDbType.Boolean, 1, "Discontinued"))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ProductID", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ProductID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_CategoryID", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "CategoryID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_CategoryID1", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "CategoryID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_Discontinued", System.Data.OleDb.OleDbType.Boolean, 1, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "Discontinued", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ProductName", System.Data.OleDb.OleDbType.VarWChar, 40, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ProductName", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_QuantityPerUnit", System.Data.OleDb.OleDbType.VarWChar, 20, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "QuantityPerUnit", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_QuantityPerUnit1", System.Data.OleDb.OleDbType.VarWChar, 20, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "QuantityPerUnit", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ReorderLevel", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ReorderLevel", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ReorderLevel1", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ReorderLevel", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_SupplierID", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "SupplierID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_SupplierID1", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "SupplierID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_UnitPrice", System.Data.OleDb.OleDbType.Currency, 8, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "UnitPrice", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_UnitPrice1", System.Data.OleDb.OleDbType.Currency, 8, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "UnitPrice", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_UnitsInStock", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "UnitsInStock", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_UnitsInStock1", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "UnitsInStock", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_UnitsOnOrder", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "UnitsOnOrder", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_UnitsOnOrder1", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "UnitsOnOrder", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbUpdateCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Select_ProductID", System.Data.OleDb.OleDbType.Integer, 4, "ProductID"))
        '
        'OleDbDeleteCommand1
        '
        Me.OleDbDeleteCommand1.CommandText = "DELETE FROM Products WHERE (ProductID = ?) AND (CategoryID = ? OR ? IS NULL AND C" & _
        "ategoryID IS NULL) AND (Discontinued = ?) AND (ProductName = ?) AND (QuantityPer" & _
        "Unit = ? OR ? IS NULL AND QuantityPerUnit IS NULL) AND (ReorderLevel = ? OR ? IS" & _
        " NULL AND ReorderLevel IS NULL) AND (SupplierID = ? OR ? IS NULL AND SupplierID " & _
        "IS NULL) AND (UnitPrice = ? OR ? IS NULL AND UnitPrice IS NULL) AND (UnitsInStoc" & _
        "k = ? OR ? IS NULL AND UnitsInStock IS NULL) AND (UnitsOnOrder = ? OR ? IS NULL " & _
        "AND UnitsOnOrder IS NULL)"
        Me.OleDbDeleteCommand1.Connection = Me.OleDbConnection1
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ProductID", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ProductID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_CategoryID", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "CategoryID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_CategoryID1", System.Data.OleDb.OleDbType.Integer, 4, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "CategoryID", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_Discontinued", System.Data.OleDb.OleDbType.Boolean, 1, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "Discontinued", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ProductName", System.Data.OleDb.OleDbType.VarWChar, 40, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ProductName", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_QuantityPerUnit", System.Data.OleDb.OleDbType.VarWChar, 20, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "QuantityPerUnit", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_QuantityPerUnit1", System.Data.OleDb.OleDbType.VarWChar, 20, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "QuantityPerUnit", System.Data.DataRowVersion.Original, Nothing))
        Me.OleDbDeleteCommand1.Parameters.Add(New System.Data.OleDb.OleDbParameter("Original_ReorderLevel", System.Data.OleDb.OleDbType.SmallInt, 2, System.Data.ParameterDirection.Input, False, CType(0, Byte), CType(0, Byte), "ReorderLevel", System.Data.DataRowVersion.Original, Nothing))