Completed
Last Updated: 16 Oct 2015 12:04 by ADMIN
To reproduce:
- Ty some text so the items in the drop down are filtered.
- Directly press enter (this should select the first item in the drop down)
- The selected value is updated however the text is not.

Workaround:
Private Sub cbo_SelectedValueChanged(sender As Object, e As EventArgs) Handles RadMultiColumnComboBox1.SelectedValueChanged, RadMultiColumnComboBox2.SelectedValueChanged, RadMultiColumnComboBox3.SelectedValueChanged
    Dim cbo As RadMultiColumnComboBox = sender

    If bLoading = False AndAlso cbo.Text <> CType(cbo.SelectedItem, Telerik.WinControls.UI.GridViewDataRowInfo).Cells(cbo.DisplayMember).Value Then
        cbo.Text = CType(cbo.SelectedItem, Telerik.WinControls.UI.GridViewDataRowInfo).Cells(cbo.DisplayMember).Value
    End If
End Sub
Completed
Last Updated: 17 Aug 2015 12:49 by ADMIN
To reproduce:
- Add columns to  the control manually.
- Bind the control. Make sure that the FieldNames are different from the column names.
- Start the application and select a value. Retrieve he value upon button click.

Workaround:
Use equal names.
Declined
Last Updated: 24 Jun 2015 12:37 by ADMIN
Workaround: disable the animations

this.radMultiColumnComboBox1.MultiColumnComboBoxElement.DropDownAnimationEnabled = false;
Completed
Last Updated: 24 Jun 2015 12:35 by ADMIN
1. Create a new project with RadGridView and bind it.
2. Add GridViewMultiComboBoxColumn.
3. Set its DataSource to a large data set.
4. Run the project and try to show the drop down.
Completed
Last Updated: 08 Jun 2015 08:44 by ADMIN
To reproduce:
- Add bound MCCB to a form.
- Open the form at design time.
- Add a control to the form and resize it.
- Start the application and and then close the form.
- You will get the following error "The designer loader did not provide a root component but has not indicated why".
  
Completed
Last Updated: 28 May 2015 13:24 by ADMIN
Drop-down opening of RadMultiColumnComboBox delays, when the AutoSizeDropDownToBestFit property is enabled and the control is bound to more than 2000 records.

Work around:

this.radMultiColumnComboBox1.ValueMember = "ID";
this.radMultiColumnComboBox1.DisplayMember = "Name";
this.radMultiColumnComboBox1.DataSource = table;
this.radMultiColumnComboBox1.AutoSizeDropDownToBestFit = false;
this.radMultiColumnComboBox1.BestFitColumns(true, false);
Completed
Last Updated: 28 May 2015 13:07 by ADMIN
Workaround:
Cancel CurrentRowChanging event if Text is empty:
        this.radMultiColumnComboBox1.EditorControl.CurrentRowChanging += EditorControl_CurrentRowChanging;
        void EditorControl_CurrentRowChanging(object sender, Telerik.WinControls.UI.CurrentRowChangingEventArgs e)
        {
            e.Cancel = string.IsNullOrEmpty(this.radMultiColumnComboBox1.Text) && this.radMultiColumnComboBox1.MultiColumnComboBoxElement.ArrowButton.IsPressed;
        }
Completed
Last Updated: 26 Mar 2015 08:00 by ADMIN
To reproduice:
1. Add mccb and bind it:
            Random random = new Random();
            DataTable dataTable = new DataTable();
            dataTable.Columns.Add("ID", typeof(int));
            dataTable.Columns.Add("Name", typeof(string));
            dataTable.Columns.Add("Bool", typeof(bool));
            dataTable.Columns.Add("DateColumn", typeof(DateTime));
            for (int i = 0; i < 20; i++)
            {
                dataTable.Rows.Add(i, "Row " + i, random.Next(10) > 5 ? true : false, DateTime.Now.AddDays(i));
            }
            this.radMultiColumnComboBox1.DataSource = dataTable;
            this.radMultiColumnComboBox1.DisplayMember = "Name";
            this.radMultiColumnComboBox1.ValueMember = "Name";

2. Add filter and subscribe to the event:
            radMultiColumnComboBox1.AutoFilter = true;

            FilterDescriptor filter = new FilterDescriptor();
            filter.PropertyName = "Name";
            filter.Operator = FilterOperator.Contains;

            this.radMultiColumnComboBox1.EditorControl.MasterTemplate.FilterDescriptors.Add(filter);
            radMultiColumnComboBox1.SelectedIndexChanged += radMultiColumnComboBox1_SelectedIndexChanged;

        void radMultiColumnComboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            Console.WriteLine(string.Format("Row changed, current Name = {0}", radMultiColumnComboBox1.EditorControl.Rows[radMultiColumnComboBox1.SelectedIndex].Cells["Name"].Value));
        }

3. Start the app the selected row is "Row 0". Type in "2", the popup will open showing rows "Row 2" and "Row 12". At this point, pressing Esc or moving the focus away from the control selected Row 2, while it shouldn't.

Completed
Last Updated: 29 Jan 2015 12:46 by ADMIN
To reproduce: 

1. Add a RadMultiColumnComboBox and set up filtering.
2. Start typing in order to filter all the rows.
3. Click somewhere. As a result the RadMultiColumnComboBox will loose focus.

If you try to get the SelectedIndex or SelectedValue you will notice that the first row in the popup grid is current. It is expected to have no selected row as the entered text does not match any row.

Workaround:

 public class CustomRadMultiColumnComboBox : RadMultiColumnComboBox
        {
            protected override void OnLostFocus(EventArgs e)
            {
                int currentIndex = this.SelectedIndex;
                base.OnLostFocus(e);
                this.SelectedIndex = currentIndex;
            }

            public override string ThemeClassName  
            { 
                get 
                { 
                    return typeof(RadMultiColumnComboBox).FullName;  
                }
            }
        }
Completed
Last Updated: 10 Dec 2014 11:50 by ADMIN
To reproduce:

Add a RadMultiColumnComboBox with one row. Open and close the dropdown, you will see that the scrollbars will show and hide with every openning

Workaround:

Use the following class:

public class MCCB : RadMultiColumnComboBox
{
    protected override RadMultiColumnComboBoxElement CreateMultiColumnComboBoxElement()
    {
        return new MCCBElement();
    }
}

public class MCCBElement : RadMultiColumnComboBoxElement
{
    protected override Size GetPopupSize(RadPopupControlBase popup, bool measure)
    {
        Size baseSize = base.GetPopupSize(popup, measure);

        RadScrollBarElement hScrollBarElement = this.EditorControl.TableElement.HScrollBar;
        baseSize.Height += (int)hScrollBarElement.ControlBoundingRectangle.Size.Height;

        return baseSize;
    }

    protected override Type ThemeEffectiveType
    {
        get
        {
            return typeof(RadMultiColumnComboBoxElement);
        }
    }
}

Completed
Last Updated: 20 Nov 2014 15:21 by ADMIN
To reproduce:

Add a RadMultiColumnComboBox fill it with data and set the following settings:

comboBoxColumnElement.EditorControl.AutoSizeRows = true;
comboBoxColumnElement.EditorControl.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
comboBoxColumnElement.EditorControl.MasterTemplate.AutoGenerateColumns = false;
comboBoxColumnElement.EditorControl.ShowRowHeaderColumn = false;
comboBoxColumnElement.EditorControl.ShowFilteringRow = false;

comboBoxColumnElement.AutoSize = true;
comboBoxColumnElement.AutoFilter = true;
comboBoxColumnElement.AutoSizeMode = Telerik.WinControls.RadAutoSizeMode.FitToAvailableSize;
comboBoxColumnElement.AutoSizeDropDownToBestFit = true;
comboBoxColumnElement.DropDownMinSize = new Size(420, 150);
comboBoxColumnElement.DropDownSizingMode = SizingMode.UpDownAndRightBottom;



When you open the dropdown you will notice that one time the scrollbar will be on the bottom and the next time it will be on the top and so on.

Workaround:

comboBoxColumnElement.PopupOpened += Popup_Opened;....

Timer timer = new Timer();

private void Popup_Opened(object sender, EventArgs e)

{
timer.Tick += Tick;
timer.Interval = 20;
timer.Start();

}

private void Tick(object sender, EventArgs e)
{
comboBoxColumnElement.EditorControl.TableElement.ScrollToRow(comboBoxColumnElement.EditorControl.SelectedRows(0));

        timer.Stop();

}


Completed
Last Updated: 30 Oct 2014 14:14 by ADMIN
ADMIN
Created by: Julian Benkov
Comments: 0
Category: MultiColumnCombo
Type: Bug Report
0
I tried upgrading to Q1 2013 and am having a problem with speed. In the past some of these big multi-combos were slow but we were able to speed it up by not using size to fit. Now the speed is horrible, especially for the large table. It looks like nothing is happening for quite a while when I click on the drop down button.

WORKAROUND: 
You can call the LoadElementTree method for every combobox in the end of your Load event handler
Completed
Last Updated: 20 Oct 2014 14:36 by ADMIN
When the AutoFilter and AutoSuggest are turned the freely typed text is not preserved and the first row of grid is selected. 
Perhaps there should be a property that controls this.
Completed
Last Updated: 20 Oct 2014 13:58 by ADMIN
To reproduce: use the following code:
private void Form1_Load(object sender, EventArgs e)
{
    this.productsTableAdapter.Fill(this.nwindDataSet.Products);

    this.radMultiColumnComboBox1.DataSource = this.productsBindingSource;
    this.radMultiColumnComboBox1.DisplayMember = "ProductName";
    this.radMultiColumnComboBox1.MultiColumnComboBoxElement.DropDownAnimationEnabled = false;
}

Follow the steps:
1.Click the arrow button.
2.Scroll to the bottom via the Mouse Wheel
As a result the last 3 rows are missing.
3.Scroll to the top via the Mouse Wheel.
4.Scroll to the bottom via the Mouse Wheel
As a result the 3 missing rows are now visible.

Workaround:
this.radMultiColumnComboBox1.MultiColumnComboBoxElement.PopupOpened+=MultiColumnComboBoxElement_PopupOpened;

private void MultiColumnComboBoxElement_PopupOpened(object sender, EventArgs e)
{
    this.radMultiColumnComboBox1.MultiColumnComboBoxElement.EditorControl.TableElement.VScrollBar.Value =
        this.radMultiColumnComboBox1.MultiColumnComboBoxElement.EditorControl.TableElement.VScrollBar.Maximum;
}
Completed
Last Updated: 09 Oct 2014 07:20 by ADMIN
To reproduce: 
public Form1()
        {
            InitializeComponent();

            Random r = new Random();
            DataTable table = new DataTable();
            table.Columns.Add("ID", typeof(int));
            table.Columns.Add("Name", typeof(string));
            table.Columns.Add("Bool", typeof(bool));
            table.Columns.Add("DateColumn", typeof(DateTime));

            for (int i = 0; i < 10; i++)
            {
                table.Rows.Add(i, "Row " + i, r.Next(10) > 5 ? true : false, DateTime.Now.AddHours(i));
            }

            radMultiColumnComboBox1.DataSource = table;
            radMultiColumnComboBox1.EditorControl.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;
            
            radMultiColumnComboBox1.DropDownMinSize = new Size(500, 500);
        }

To work around:
            radMultiColumnComboBox1.DropDownOpening += new Telerik.WinControls.UI.RadPopupOpeningEventHandler(radMultiColumnComboBox1_DropDownOpening);

void radMultiColumnComboBox1_DropDownOpening(object sender, CancelEventArgs args)
{
    radMultiColumnComboBox1.MultiColumnComboBoxElement.MultiColumnPopupForm.MinimumSize =          new Size(500, 500);
}
Completed
Last Updated: 07 Oct 2014 12:54 by ADMIN
To reproduce:
1.Add a RadMultiColumnComboBox and populate it with data.
2.Set the EditorControl.AllowSearchRow and the AutoSizeDropDownToBestFit properties to true .
3.When you open the drop down and try to use the search row (e.g. clicking over the arrow buttons), the drop down is closed.

Workaround:
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Me.ProductsTableAdapter.Fill(Me.NwindDataSet.Products)
    Me.RadMultiColumnComboBox1.DataSource = Me.ProductsBindingSource

    Me.RadMultiColumnComboBox1.EditorControl.AllowSearchRow = True
    Me.RadMultiColumnComboBox1.AutoSizeDropDownToBestFit = True


    AddHandler Me.RadMultiColumnComboBox1.DropDownClosing, AddressOf RadMultiColumnComboBox1_DropDownClosing
    AddHandler Me.RadMultiColumnComboBox1.EditorControl.MouseDown, AddressOf EditorControl_MouseDown
End Sub

Private Sub RadMultiColumnComboBox1_DropDownClosing(sender As Object, args As Telerik.WinControls.UI.RadPopupClosingEventArgs)
    args.Cancel = shouldCancel
    shouldCancel = False
End Sub

Dim shouldCancel As Boolean = False
Private Sub EditorControl_MouseDown(sender As Object, e As MouseEventArgs)
    Dim searchElement = Me.RadMultiColumnComboBox1.EditorControl.ElementTree.GetElementAtPoint(e.Location)
    If searchElement IsNot Nothing Then
        Dim parent = searchElement.Parent
        If parent IsNot Nothing AndAlso (TypeOf parent Is GridSearchRowElement Or TypeOf parent Is GridSearchCellElement) Then
            shouldCancel = True
        End If

    End If
End Sub
Completed
Last Updated: 01 Oct 2014 13:00 by ADMIN
workaround
this.radMultiColumnComboBox1.ResetText();
Completed
Last Updated: 01 Oct 2014 11:58 by ADMIN
To reproduce:
- Create a custom cell class and try to add an RadMultiColumnComboBoxElement to its children.

Workaround:
public class MyMCCBElement : RadMultiColumnComboBoxElement
{
    protected override void OnParentChanged(Telerik.WinControls.RadElement previousParent)
    {
        if (this.Parent.ElementTree != null)
        {
            base.OnParentChanged(previousParent);
        }
    }
    protected override Type ThemeEffectiveType
    {
        get
        {
            return typeof(RadMultiColumnComboBoxElement);
        }
    }
}
Completed
Last Updated: 23 Sep 2014 13:02 by ADMIN
ADMIN
Created by: Dess | Tech Support Engineer, Sr.
Comments: 2
Category: MultiColumnCombo
Type: Bug Report
1
To reproduce:
-add RadMultiColumnComboBox and bind it to some collection. Use the following code:

radMultiColumnComboBox1.MultiColumnComboBoxElement.EditorControl.ShowItemToolTips = true;
radMultiColumnComboBox1.MultiColumnComboBoxElement.EditorControl.ToolTipTextNeeded += EditorControl_ToolTipTextNeeded;

private void EditorControl_ToolTipTextNeeded(object sender, Telerik.WinControls.ToolTipTextNeededEventArgs e)
        {
           e.ToolTipText ="some text";
        }

As a result the tool tip is not shown.

Workaround:use ScreenTipNeeded event instead
Completed
Last Updated: 29 Jul 2014 13:20 by Svetlin
The SelectedValueChanged event is not fired when you select the current row after filtering.

Resolution: In Q1 2014 SP1 (2014.1.402) the first value from data source is selected by default and the event does not fire for already selected value.
If you select second or other value and after that select the first row, the SelectedValueChanged and SelectedIndexChanged are fired.