Using a BindingSource component to bind a list to a DataGridView control : List « Data Structure « VB.Net






  1. VB.Net
  2. Data Structure
  3. List

Using a BindingSource component to bind a list to a DataGridView control

   
 
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits System.Windows.Forms.Form

    Private WithEvents changeItemBtn As New Button()

    Private customersDataGridView As New DataGridView()

    Private WithEvents customersBindingSource As New BindingSource()

    Public Sub New()
        Me.changeItemBtn.Text = "Change Item"
        Me.changeItemBtn.Dock = DockStyle.Bottom
        Me.Controls.Add(Me.changeItemBtn)

        customersDataGridView.Dock = DockStyle.Top
        Me.Controls.Add(customersDataGridView)
        Me.Size = New Size(800, 200)
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles Me.Load
        Dim customerList As List(Of DemoCustomer) = New List(Of DemoCustomer)
        customerList.Add(New DemoCustomer())
        customerList.Add(New DemoCustomer())
        customerList.Add(New DemoCustomer())

        Me.customersBindingSource.DataSource = customerList
        Me.customersDataGridView.DataSource = Me.customersBindingSource
    End Sub

    Private Sub changeItemBtn_Click(ByVal sender As Object, ByVal e As EventArgs)Handles changeItemBtn.Click
        Dim customerList As List(Of DemoCustomer) = CType(Me.customersBindingSource.DataSource, List(Of DemoCustomer))

        customerList(0).CompanyName = "A"

        Me.customersBindingSource.ResetItem(0)

    End Sub

    <STAThread()> _
    Shared Sub Main()
        Application.Run(New Form1())
    End Sub
End Class

Public Class DemoCustomer
    Private idValue As Guid = Guid.NewGuid()
    Private customerName As String = String.Empty
    Private companyNameValue As String = String.Empty

    Sub New()
        customerName = "no data"
        companyNameValue = "no data"
    End Sub

    Public ReadOnly Property ID() As Guid
        Get
            Return Me.idValue
        End Get
    End Property

    Public Property CompanyName() As String
        Get
            Return Me.companyNameValue
        End Get

        Set(ByVal value As String)
            Me.companyNameValue = Value
        End Set
    End Property
End Class








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