Find a value in DataView : DataView « Database ADO.net « VB.Net Tutorial

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VB.Net Tutorial » Database ADO.net » DataView 




Find a value in DataView
Imports System.Windows.Forms
Imports System.Data
Imports System.Data.OleDb

public class FindAValueInDataView
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class


Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, _
     ByVal e As System.EventArgsHandles MyBase.Load
        Dim contacts_table As New DataTable("Contacts")

        ' Add columns.
        contacts_table.Columns.Add("FirstName", GetType(String))
        contacts_table.Columns.Add("LastName", GetType(String))
        contacts_table.Columns.Add("Street", GetType(String))
        contacts_table.Columns.Add("City", GetType(String))
        contacts_table.Columns.Add("State", GetType(String))
        contacts_table.Columns.Add("Zip", GetType(String))

        contacts_table.Rows.Add(New Object() {"A""A", _
            "1234""B""A""11111"})
        contacts_table.Rows.Add(New Object() {"B""B", _
            "22""B""C""22222"})
        contacts_table.Rows.Add(New Object() {"C""C", _
            "3""P""K""33333"})
        contacts_table.Rows.Add(New Object() {"""D", _
            "4""P""KS""44444"})

        grdAll.DataSource = contacts_table
        grdAll.CaptionText = "All Records"
        
        Dim dv_name As New DataView(contacts_table)
        dv_name.RowFilter = "FirstName >= 'A'"
        grdName.DataSource = dv_name
        grdName.CaptionText = "LastName >= E"

        dv_name.Sort = "FirstName, LastName"
        MessageBox.Show(dv_name.Find(New String() {"A""A"}).ToString)

    End Sub
End Class

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Public Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.SplitContainer1 = New System.Windows.Forms.SplitContainer
        Me.SplitContainer2 = New System.Windows.Forms.SplitContainer
        Me.grdAll = New System.Windows.Forms.DataGrid
        Me.grdCO = New System.Windows.Forms.DataGrid
        Me.grdName = New System.Windows.Forms.DataGrid
        Me.SplitContainer1.Panel1.SuspendLayout()
        Me.SplitContainer1.Panel2.SuspendLayout()
        Me.SplitContainer1.SuspendLayout()
        Me.SplitContainer2.Panel1.SuspendLayout()
        Me.SplitContainer2.Panel2.SuspendLayout()
        Me.SplitContainer2.SuspendLayout()
        CType(Me.grdAll, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.grdCO, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.grdName, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'SplitContainer1
        '
        Me.SplitContainer1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.SplitContainer1.Location = New System.Drawing.Point(00)
        Me.SplitContainer1.Name = "SplitContainer1"
        Me.SplitContainer1.Orientation = System.Windows.Forms.Orientation.Horizontal
        '
        'SplitContainer1.Panel1
        '
        Me.SplitContainer1.Panel1.Controls.Add(Me.grdAll)
        '
        'SplitContainer1.Panel2
        '
        Me.SplitContainer1.Panel2.Controls.Add(Me.SplitContainer2)
        Me.SplitContainer1.Size = New System.Drawing.Size(519485)
        Me.SplitContainer1.SplitterDistance = 180
        Me.SplitContainer1.TabIndex = 2
        Me.SplitContainer1.Text = "SplitContainer1"
        '
        'SplitContainer2
        '
        Me.SplitContainer2.Dock = System.Windows.Forms.DockStyle.Fill
        Me.SplitContainer2.Location = New System.Drawing.Point(00)
        Me.SplitContainer2.Name = "SplitContainer2"
        Me.SplitContainer2.Orientation = System.Windows.Forms.Orientation.Horizontal
        '
        'SplitContainer2.Panel1
        '
        Me.SplitContainer2.Panel1.Controls.Add(Me.grdCO)
        '
        'SplitContainer2.Panel2
        '
        Me.SplitContainer2.Panel2.Controls.Add(Me.grdName)
        Me.SplitContainer2.Size = New System.Drawing.Size(519301)
        Me.SplitContainer2.SplitterDistance = 173
        Me.SplitContainer2.TabIndex = 0
        Me.SplitContainer2.Text = "SplitContainer2"
        '
        'grdAll
        '
        Me.grdAll.DataMember = ""
        Me.grdAll.Dock = System.Windows.Forms.DockStyle.Fill
        Me.grdAll.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.grdAll.Location = New System.Drawing.Point(00)
        Me.grdAll.Name = "grdAll"
        Me.grdAll.Size = New System.Drawing.Size(519180)
        Me.grdAll.TabIndex = 0
        '
        'grdCO
        '
        Me.grdCO.DataMember = ""
        Me.grdCO.Dock = System.Windows.Forms.DockStyle.Fill
        Me.grdCO.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.grdCO.Location = New System.Drawing.Point(00)
        Me.grdCO.Name = "grdCO"
        Me.grdCO.Size = New System.Drawing.Size(519173)
        Me.grdCO.TabIndex = 1
        '
        'grdName
        '
        Me.grdName.DataMember = ""
        Me.grdName.Dock = System.Windows.Forms.DockStyle.Fill
        Me.grdName.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.grdName.Location = New System.Drawing.Point(00)
        Me.grdName.Name = "grdName"
        Me.grdName.Size = New System.Drawing.Size(519124)
        Me.grdName.TabIndex = 1
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(519485)
        Me.Controls.Add(Me.SplitContainer1)
        Me.Name = "Form1"
        Me.Text = "Contacts"
        Me.SplitContainer1.Panel1.ResumeLayout(False)
        Me.SplitContainer1.Panel2.ResumeLayout(False)
        Me.SplitContainer1.ResumeLayout(False)
        Me.SplitContainer2.Panel1.ResumeLayout(False)
        Me.SplitContainer2.Panel2.ResumeLayout(False)
        Me.SplitContainer2.ResumeLayout(False)
        CType(Me.grdAll, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.grdCO, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.grdName, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub
    Friend WithEvents SplitContainer1 As System.Windows.Forms.SplitContainer
    Friend WithEvents grdAll As System.Windows.Forms.DataGrid
    Friend WithEvents SplitContainer2 As System.Windows.Forms.SplitContainer
    Friend WithEvents grdCO As System.Windows.Forms.DataGrid
    Friend WithEvents grdName As System.Windows.Forms.DataGrid

End Class














26.8.DataView
26.8.1.Find a value in DataViewFind a value in DataView
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