Hi Mike,
This FindByCategoryID method should be in a class that was created for you
when you created dsCategories.xsd. There should be a file called
dsCategories.vb (perhaps you need to click the Show All Files icon). Inside
it, you'll find this:
Public Function FindByCategoryID(ByVal CategoryID As Integer) As
CategoriesRow
Return CType(Me.Rows.Find(New Object()
{CategoryID}),CategoriesRow)
End Function
I've pasted the entire contents of dsCategories.vb in below.
Ken
'------------------------------------------------------------------------------
' <autogenerated>
' This code was generated by a tool.
' Runtime Version: 1.1.4322.573
'
' Changes to this file may cause incorrect behavior and will be lost if
' the code is regenerated.
' </autogenerated>
'------------------------------------------------------------------------------
Option Strict Off
Option Explicit On
Imports System
Imports System.Data
Imports System.Runtime.Serialization
Imports System.Xml
<Serializable(), _
System.ComponentModel.DesignerCategoryAttribute("code"), _
System.Diagnostics.DebuggerStepThrough(), _
System.ComponentModel.ToolboxItem(true)> _
Public Class dsCategories
Inherits DataSet
Private tableCategories As CategoriesDataTable
Public Sub New()
MyBase.New
Me.InitClass
Dim schemaChangedHandler As
System.ComponentModel.CollectionChangeEventHandler = AddressOf
Me.SchemaChanged
AddHandler Me.Tables.CollectionChanged, schemaChangedHandler
AddHandler Me.Relations.CollectionChanged, schemaChangedHandler
End Sub
Protected Sub New(ByVal info As SerializationInfo, ByVal context As
StreamingContext)
MyBase.New
Dim strSchema As String = CType(info.GetValue("XmlSchema",
GetType(System.String)),String)
If (Not (strSchema) Is Nothing) Then
Dim ds As DataSet = New DataSet
ds.ReadXmlSchema(New XmlTextReader(New
System.IO.StringReader(strSchema)))
If (Not (ds.Tables("Categories")) Is Nothing) Then
Me.Tables.Add(New
CategoriesDataTable(ds.Tables("Categories")))
End If
Me.DataSetName = ds.DataSetName
Me.Prefix = ds.Prefix
Me.Namespace = ds.Namespace
Me.Locale = ds.Locale
Me.CaseSensitive = ds.CaseSensitive
Me.EnforceConstraints = ds.EnforceConstraints
Me.Merge(ds, false, System.Data.MissingSchemaAction.Add)
Me.InitVars
Else
Me.InitClass
End If
Me.GetSerializationData(info, context)
Dim schemaChangedHandler As
System.ComponentModel.CollectionChangeEventHandler = AddressOf
Me.SchemaChanged
AddHandler Me.Tables.CollectionChanged, schemaChangedHandler
AddHandler Me.Relations.CollectionChanged, schemaChangedHandler
End Sub
<System.ComponentModel.Browsable(false), _
System.ComponentModel.DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Content)>
_
Public ReadOnly Property Categories As CategoriesDataTable
Get
Return Me.tableCategories
End Get
End Property
Public Overrides Function Clone() As DataSet
Dim cln As dsCategories = CType(MyBase.Clone,dsCategories)
cln.InitVars
Return cln
End Function
Protected Overrides Function ShouldSerializeTables() As Boolean
Return false
End Function
Protected Overrides Function ShouldSerializeRelations() As Boolean
Return false
End Function
Protected Overrides Sub ReadXmlSerializable(ByVal reader As XmlReader)
Me.Reset
Dim ds As DataSet = New DataSet
ds.ReadXml(reader)
If (Not (ds.Tables("Categories")) Is Nothing) Then
Me.Tables.Add(New CategoriesDataTable(ds.Tables("Categories")))
End If
Me.DataSetName = ds.DataSetName
Me.Prefix = ds.Prefix
Me.Namespace = ds.Namespace
Me.Locale = ds.Locale
Me.CaseSensitive = ds.CaseSensitive
Me.EnforceConstraints = ds.EnforceConstraints
Me.Merge(ds, false, System.Data.MissingSchemaAction.Add)
Me.InitVars
End Sub
Protected Overrides Function GetSchemaSerializable() As
System.Xml.Schema.XmlSchema
Dim stream As System.IO.MemoryStream = New System.IO.MemoryStream
Me.WriteXmlSchema(New XmlTextWriter(stream, Nothing))
stream.Position = 0
Return System.Xml.Schema.XmlSchema.Read(New XmlTextReader(stream),
Nothing)
End Function
Friend Sub InitVars()
Me.tableCategories =
CType(Me.Tables("Categories"),CategoriesDataTable)
If (Not (Me.tableCategories) Is Nothing) Then
Me.tableCategories.InitVars
End If
End Sub
Private Sub InitClass()
Me.DataSetName = "dsCategories"
Me.Prefix = ""
Me.Namespace = "
http://www.tempuri.org/dsCategories.xsd"
Me.Locale = New System.Globalization.CultureInfo("en-CA")
Me.CaseSensitive = false
Me.EnforceConstraints = true
Me.tableCategories = New CategoriesDataTable
Me.Tables.Add(Me.tableCategories)
End Sub
Private Function ShouldSerializeCategories() As Boolean
Return false
End Function
Private Sub SchemaChanged(ByVal sender As Object, ByVal e As
System.ComponentModel.CollectionChangeEventArgs)
If (e.Action = System.ComponentModel.CollectionChangeAction.Remove)
Then
Me.InitVars
End If
End Sub
Public Delegate Sub CategoriesRowChangeEventHandler(ByVal sender As
Object, ByVal e As CategoriesRowChangeEvent)
<System.Diagnostics.DebuggerStepThrough()> _
Public Class CategoriesDataTable
Inherits DataTable
Implements System.Collections.IEnumerable
Private columnCategoryID As DataColumn
Private columnCategoryName As DataColumn
Private columnDescription As DataColumn
Friend Sub New()
MyBase.New("Categories")
Me.InitClass
End Sub
Friend Sub New(ByVal table As DataTable)
MyBase.New(table.TableName)
If (table.CaseSensitive <> table.DataSet.CaseSensitive) Then
Me.CaseSensitive = table.CaseSensitive
End If
If (table.Locale.ToString <> table.DataSet.Locale.ToString) Then
Me.Locale = table.Locale
End If
If (table.Namespace <> table.DataSet.Namespace) Then
Me.Namespace = table.Namespace
End If
Me.Prefix = table.Prefix
Me.MinimumCapacity = table.MinimumCapacity
Me.DisplayExpression = table.DisplayExpression
End Sub
<System.ComponentModel.Browsable(false)> _
Public ReadOnly Property Count As Integer
Get
Return Me.Rows.Count
End Get
End Property
Friend ReadOnly Property CategoryIDColumn As DataColumn
Get
Return Me.columnCategoryID
End Get
End Property
Friend ReadOnly Property CategoryNameColumn As DataColumn
Get
Return Me.columnCategoryName
End Get
End Property
Friend ReadOnly Property DescriptionColumn As DataColumn
Get
Return Me.columnDescription
End Get
End Property
Public Default ReadOnly Property Item(ByVal index As Integer) As
CategoriesRow
Get
Return CType(Me.Rows(index),CategoriesRow)
End Get
End Property
Public Event CategoriesRowChanged As CategoriesRowChangeEventHandler
Public Event CategoriesRowChanging As
CategoriesRowChangeEventHandler
Public Event CategoriesRowDeleted As CategoriesRowChangeEventHandler
Public Event CategoriesRowDeleting As
CategoriesRowChangeEventHandler
Public Overloads Sub AddCategoriesRow(ByVal row As CategoriesRow)
Me.Rows.Add(row)
End Sub
Public Overloads Function AddCategoriesRow(ByVal CategoryName As
String, ByVal Description As String) As CategoriesRow
Dim rowCategoriesRow As CategoriesRow =
CType(Me.NewRow,CategoriesRow)
rowCategoriesRow.ItemArray = New Object() {Nothing,
CategoryName, Description}
Me.Rows.Add(rowCategoriesRow)
Return rowCategoriesRow
End Function
Public Function FindByCategoryID(ByVal CategoryID As Integer) As
CategoriesRow
Return CType(Me.Rows.Find(New Object()
{CategoryID}),CategoriesRow)
End Function
Public Function GetEnumerator() As System.Collections.IEnumerator
Implements System.Collections.IEnumerable.GetEnumerator
Return Me.Rows.GetEnumerator
End Function
Public Overrides Function Clone() As DataTable
Dim cln As CategoriesDataTable =
CType(MyBase.Clone,CategoriesDataTable)
cln.InitVars
Return cln
End Function
Protected Overrides Function CreateInstance() As DataTable
Return New CategoriesDataTable
End Function
Friend Sub InitVars()
Me.columnCategoryID = Me.Columns("CategoryID")
Me.columnCategoryName = Me.Columns("CategoryName")
Me.columnDescription = Me.Columns("Description")
End Sub
Private Sub InitClass()
Me.columnCategoryID = New DataColumn("CategoryID",
GetType(System.Int32), Nothing, System.Data.MappingType.Element)
Me.Columns.Add(Me.columnCategoryID)
Me.columnCategoryName = New DataColumn("CategoryName",
GetType(System.String), Nothing, System.Data.MappingType.Element)
Me.Columns.Add(Me.columnCategoryName)
Me.columnDescription = New DataColumn("Description",
GetType(System.String), Nothing, System.Data.MappingType.Element)
Me.Columns.Add(Me.columnDescription)
Me.Constraints.Add(New UniqueConstraint("Constraint1", New
DataColumn() {Me.columnCategoryID}, true))
Me.columnCategoryID.AutoIncrement = true
Me.columnCategoryID.AllowDBNull = false
Me.columnCategoryID.ReadOnly = true
Me.columnCategoryID.Unique = true
Me.columnCategoryName.AllowDBNull = false
End Sub
Public Function NewCategoriesRow() As CategoriesRow
Return CType(Me.NewRow,CategoriesRow)
End Function
Protected Overrides Function NewRowFromBuilder(ByVal builder As
DataRowBuilder) As DataRow
Return New CategoriesRow(builder)
End Function
Protected Overrides Function GetRowType() As System.Type
Return GetType(CategoriesRow)
End Function
Protected Overrides Sub OnRowChanged(ByVal e As
DataRowChangeEventArgs)
MyBase.OnRowChanged(e)
If (Not (Me.CategoriesRowChangedEvent) Is Nothing) Then
RaiseEvent CategoriesRowChanged(Me, New
CategoriesRowChangeEvent(CType(e.Row,CategoriesRow), e.Action))
End If
End Sub
Protected Overrides Sub OnRowChanging(ByVal e As
DataRowChangeEventArgs)
MyBase.OnRowChanging(e)
If (Not (Me.CategoriesRowChangingEvent) Is Nothing) Then
RaiseEvent CategoriesRowChanging(Me, New
CategoriesRowChangeEvent(CType(e.Row,CategoriesRow), e.Action))
End If
End Sub
Protected Overrides Sub OnRowDeleted(ByVal e As
DataRowChangeEventArgs)
MyBase.OnRowDeleted(e)
If (Not (Me.CategoriesRowDeletedEvent) Is Nothing) Then
RaiseEvent CategoriesRowDeleted(Me, New
CategoriesRowChangeEvent(CType(e.Row,CategoriesRow), e.Action))
End If
End Sub
Protected Overrides Sub OnRowDeleting(ByVal e As
DataRowChangeEventArgs)
MyBase.OnRowDeleting(e)
If (Not (Me.CategoriesRowDeletingEvent) Is Nothing) Then
RaiseEvent CategoriesRowDeleting(Me, New
CategoriesRowChangeEvent(CType(e.Row,CategoriesRow), e.Action))
End If
End Sub
Public Sub RemoveCategoriesRow(ByVal row As CategoriesRow)
Me.Rows.Remove(row)
End Sub
End Class
<System.Diagnostics.DebuggerStepThrough()> _
Public Class CategoriesRow
Inherits DataRow
Private tableCategories As CategoriesDataTable
Friend Sub New(ByVal rb As DataRowBuilder)
MyBase.New(rb)
Me.tableCategories = CType(Me.Table,CategoriesDataTable)
End Sub
Public Property CategoryID As Integer
Get
Return
CType(Me(Me.tableCategories.CategoryIDColumn),Integer)
End Get
Set
Me(Me.tableCategories.CategoryIDColumn) = value
End Set
End Property
Public Property CategoryName As String
Get
Return
CType(Me(Me.tableCategories.CategoryNameColumn),String)
End Get
Set
Me(Me.tableCategories.CategoryNameColumn) = value
End Set
End Property
Public Property Description As String
Get
Try
Return
CType(Me(Me.tableCategories.DescriptionColumn),String)
Catch e As InvalidCastException
Throw New StrongTypingException("Cannot get value
because it is DBNull.", e)
End Try
End Get
Set
Me(Me.tableCategories.DescriptionColumn) = value
End Set
End Property
Public Function IsDescriptionNull() As Boolean
Return Me.IsNull(Me.tableCategories.DescriptionColumn)
End Function
Public Sub SetDescriptionNull()
Me(Me.tableCategories.DescriptionColumn) = System.Convert.DBNull
End Sub
End Class
<System.Diagnostics.DebuggerStepThrough()> _
Public Class CategoriesRowChangeEvent
Inherits EventArgs
Private eventRow As CategoriesRow
Private eventAction As DataRowAction
Public Sub New(ByVal row As CategoriesRow, ByVal action As
DataRowAction)
MyBase.New
Me.eventRow = row
Me.eventAction = action
End Sub
Public ReadOnly Property Row As CategoriesRow
Get
Return Me.eventRow
End Get
End Property
Public ReadOnly Property Action As DataRowAction
Get
Return Me.eventAction
End Get
End Property
End Class
End Class
