Use DataView to filter data table : DataGrid « Database ADO.net « VB.Net Tutorial





Use DataView to filter data table
Imports System.Windows.Forms
Imports System.Data
Imports System.Data.OleDb

public class CreateDataTableAndFilteredByDataView
   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.EventArgs) Handles 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_co As New DataView(contacts_table)
        dv_co.RowFilter = "State = 'C'"
        grdCO.DataSource = dv_co
        grdCO.CaptionText = "CO Records"

        

    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(0, 0)
        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(519, 485)
        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(0, 0)
        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(519, 301)
        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(0, 0)
        Me.grdAll.Name = "grdAll"
        Me.grdAll.Size = New System.Drawing.Size(519, 180)
        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(0, 0)
        Me.grdCO.Name = "grdCO"
        Me.grdCO.Size = New System.Drawing.Size(519, 173)
        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(0, 0)
        Me.grdName.Name = "grdName"
        Me.grdName.Size = New System.Drawing.Size(519, 124)
        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(519, 485)
        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










26.3.DataGrid
26.3.1.Create DataTable and add to DataGridCreate DataTable and add to DataGrid
26.3.2.Add DataRow to DataGridAdd DataRow to DataGrid
26.3.3.Make the combined FirstName/LastName uniqueMake the combined FirstName/LastName unique
26.3.4.Use DataView to filter data tableUse DataView to filter data table
26.3.5.Load XML data to DataGrid
26.3.6.DataGrid with Error markDataGrid with Error mark
26.3.7.DataGrid: DataSet RelationDataGrid: DataSet Relation