Questions on UI for WinForms Forum

5 answers

183 views

Hi,

I have a problem using datatable.getChanges method with a radGridView binded on a datatable, changing values programmaticaly:
The first changed value is not in the datatable.getChanges results.

Here is a simple example :

Designer.vb

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _

Partial Class testTelerik

Inherits System.Windows.Forms.Form

'Form remplace la méthode Dispose pour nettoyer la liste des composants.

<System.Diagnostics.DebuggerNonUserCode()> _

Protected Overrides Sub Dispose(ByVal disposing As Boolean)

Try

If disposing AndAlso components IsNot Nothing Then

components.Dispose()

End If

Finally

MyBase.Dispose(disposing)

End Try

End Sub

'Requise par le Concepteur Windows Form

Private components As System.ComponentModel.IContainer

'REMARQUE : la procédure suivante est requise par le Concepteur Windows Form

'Elle peut être modifiée à l'aide du Concepteur Windows Form.

'Ne la modifiez pas à l'aide de l'éditeur de code.

<System.Diagnostics.DebuggerStepThrough()> _

Private Sub InitializeComponent()

Dim GridViewTextBoxColumn1 As Telerik.WinControls.UI.GridViewTextBoxColumn = New Telerik.WinControls.UI.GridViewTextBoxColumn()

Me.RadGridView1 = New Telerik.WinControls.UI.RadGridView()

Me.RadButton1 = New Telerik.WinControls.UI.RadButton()

CType(Me.RadGridView1, System.ComponentModel.ISupportInitialize).BeginInit()

CType(Me.RadButton1, System.ComponentModel.ISupportInitialize).BeginInit()

Me.SuspendLayout()

'

'RadGridView1

'

Me.RadGridView1.Location = New System.Drawing.Point(27, 34)

'

'RadGridView1

'

Me.RadGridView1.MasterTemplate.AllowAddNewRow = False

Me.RadGridView1.MasterTemplate.AllowDeleteRow = False

Me.RadGridView1.MasterTemplate.AllowEditRow = False

Me.RadGridView1.MasterTemplate.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill

GridViewTextBoxColumn1.FieldName = "Name"

GridViewTextBoxColumn1.FormatString = ""

GridViewTextBoxColumn1.HeaderText = "Name"

GridViewTextBoxColumn1.Name = "column1"

GridViewTextBoxColumn1.Width = 219

Me.RadGridView1.MasterTemplate.Columns.AddRange(New Telerik.WinControls.UI.GridViewDataColumn() {GridViewTextBoxColumn1})

Me.RadGridView1.Name = "RadGridView1"

Me.RadGridView1.Size = New System.Drawing.Size(240, 150)

Me.RadGridView1.TabIndex = 0

Me.RadGridView1.Text = "RadGridView1"

'

'RadButton1

'

Me.RadButton1.Location = New System.Drawing.Point(137, 212)

Me.RadButton1.Name = "RadButton1"

Me.RadButton1.Size = New System.Drawing.Size(130, 24)

Me.RadButton1.TabIndex = 1

Me.RadButton1.Text = "RadButton1"

'

'testTelerik

'

Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)

Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font

Me.ClientSize = New System.Drawing.Size(292, 266)

Me.Controls.Add(Me.RadButton1)

Me.Controls.Add(Me.RadGridView1)

Me.Name = "testTelerik"

Me.Text = "testTelerik"

CType(Me.RadGridView1, System.ComponentModel.ISupportInitialize).EndInit()

CType(Me.RadButton1, System.ComponentModel.ISupportInitialize).EndInit()

Me.ResumeLayout(False)

End Sub

Friend WithEvents RadGridView1 As Telerik.WinControls.UI.RadGridView

Friend WithEvents RadButton1 As Telerik.WinControls.UI.RadButton

End Class

Form.vb

Public Class testTelerik

Public Sub New()

' Cet appel est requis par le concepteur.

InitializeComponent()

Dim dt As New DataTable

dt.Columns.Add("Name", GetType(String))

Dim dr As DataRow = dt.NewRow

dr("Name") = "Johnson"

dt.Rows.Add(dr)

dr = dt.NewRow

dr("Name") = "Peter"

dt.Rows.Add(dr)

dt.AcceptChanges()

RadGridView1.DataSource = dt

End Sub

Private Sub RadButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadButton1.Click

Dim dt As DataTable = DirectCast(RadGridView1.DataSource, DataTable)

RadGridView1.Rows(0).Cells(0).Value = "NewOne"

RadGridView1.Rows(1).Cells(0).Value = "NewOne2"

Dim changes As DataTable = dt.GetChanges

MessageBox.Show(changes.Rows.Count.ToString + " change(s)")

End Sub

End Class

I expect 2 changes whereas i have only 1..

Is this a bug ?
Is there a workaround?

Thanks,
Gerald

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