more GridViewMultiComboBoxColumn(s) in a grid

[Ferry Engels]

Hello,

I have a question about the GridViewMultiComboBoxColumn editor.
I use 3 GridViewMultiComboBoxColumn(s) in my grid and i want all of them filled with 2 pull-down columns.

In the example on the site it is simple to get one GridViewMultiComboBoxColumn working.
But how do i get the other 2 filled. I tried to managed it by using there name in the code but that doesn't work.
Is there a simple way to fill them all.

The grid is created in code not in design-time.

Thanks

Ferry

[Richard Slade]

Hello Ferry,

Adding additional columns will be the same as adding the first one.

Here is a sample for you that you can paste straight into a new project.

Designer File

namespace RadGridView_MultiComboColumn
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.radGridView1 = new Telerik.WinControls.UI.RadGridView();
            ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();
            this.SuspendLayout();
            //
            // radGridView1
            //
            this.radGridView1.BackColor = System.Drawing.SystemColors.Control;
            this.radGridView1.Cursor = System.Windows.Forms.Cursors.Default;
            this.radGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.radGridView1.Font = new System.Drawing.Font("Segoe UI", 8.25F);
            this.radGridView1.ForeColor = System.Drawing.SystemColors.ControlText;
            this.radGridView1.ImeMode = System.Windows.Forms.ImeMode.NoControl;
            this.radGridView1.Location = new System.Drawing.Point(0, 0);
            this.radGridView1.Name = "radGridView1";
            this.radGridView1.RightToLeft = System.Windows.Forms.RightToLeft.No;
            this.radGridView1.Size = new System.Drawing.Size(464, 262);
            this.radGridView1.TabIndex = 0;
            this.radGridView1.Text = "radGridView1";
            //
            // Form1
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(464, 262);
            this.Controls.Add(this.radGridView1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

        private Telerik.WinControls.UI.RadGridView radGridView1;
    }
}

Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Telerik.WinControls.UI;

namespace RadGridView_MultiComboColumn
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.radGridView1.AutoGenerateColumns = false;

            // build cars data source
            BindingList<Car> cars = new BindingList<Car>();
            for(int i = 0; i < 5;i++)
            {
                cars.Add(new Car(i, "BMW 12" + i.ToString()));
            }

            // build schools data source
            BindingList<School> schools = new BindingList<School>();
            for (int i = 0; i < 5; i++)
            {
                schools.Add(new School(i, "School " + i.ToString()));
            }

            // build workplace data source
            BindingList<Workplace> workplaces = new BindingList<Workplace>();
            for (int i = 0; i < 5; i++)
            {
                workplaces.Add(new Workplace(i, "Workplace " + i.ToString()));
            }

            // build person data source
            BindingList<Person> people = new BindingList<Person>();
            for (int i = 0; i < 5; i++)
            {
                people.Add(new Person(i, "Name " + i.ToString(), i, i, i));
            }

            GridViewDecimalColumn idColumn = new GridViewDecimalColumn();
            idColumn.HeaderText = "PersonId";
            idColumn.FieldName = "Id";
            idColumn.Name = "Id";

            GridViewTextBoxColumn nameColumn = new GridViewTextBoxColumn();
            nameColumn.HeaderText = "Name";
            nameColumn.FieldName = "Name";
            nameColumn.Name = "Name";

            GridViewMultiComboBoxColumn carColumn = new GridViewMultiComboBoxColumn();
            carColumn.DataSource = cars;
            carColumn.HeaderText = "Car";
            carColumn.DisplayMember = "Name";
            carColumn.ValueMember = "Id";
            carColumn.FieldName = "CarId";

            GridViewMultiComboBoxColumn schoolColumn = new GridViewMultiComboBoxColumn();
            schoolColumn.DataSource = schools;
            schoolColumn.HeaderText = "School";
            schoolColumn.DisplayMember = "Name";
            schoolColumn.ValueMember = "Id";
            schoolColumn.FieldName = "SchoolId";

            GridViewMultiComboBoxColumn workplaceColumn = new GridViewMultiComboBoxColumn();
            workplaceColumn.DataSource = workplaces;
            workplaceColumn.HeaderText = "Workplace";
            workplaceColumn.DisplayMember = "Name";
            workplaceColumn.ValueMember = "Id";
            workplaceColumn.FieldName = "WorkplaceId";

            this.radGridView1.Columns.Add(idColumn);
            this.radGridView1.Columns.Add(nameColumn);
            this.radGridView1.Columns.Add(carColumn);
            this.radGridView1.Columns.Add(schoolColumn);
            this.radGridView1.Columns.Add(workplaceColumn);
            this.radGridView1.DataSource = people;

        }
    }

    public class Person
    {
        public Person(int Id, string name, int carId, int schoolId, int workplaceId)
        {
            this.Id = Id;
            this.Name = name;
            this.CarId = carId;
            this.SchoolId = schoolId;
            this.WorkplaceId = workplaceId;
        }

        public int Id
        { get; set; }

        public string Name
        { get; set; }

        public int CarId
        { get; set; }

        public int SchoolId
        { get; set; }

        public int WorkplaceId
        { get; set; }
    }

    public class Car
    {
        public Car(int Id, string name)
        {
            this.Id = Id;
            this.Name = name;
        }

        public int Id
        { get; set; }

        public string Name
        { get; set; }
    }

    public class School
    {
        public School(int Id, string name)
        {
            this.Id = Id;
            this.Name = name;
        }

        public int Id
        { get; set; }

        public string Name
        { get; set; }
    }

    public class Workplace
    {
        public Workplace(int Id, string name)
        {
            this.Id = Id;
            this.Name = name;
        }

        public int Id
        { get; set; }

        public string Name
        { get; set; }
    }
}

You might also be interested to see the documentation for this column type which can be found here
Hope that helps
Richard

[Ferry Engels]

Thanks Richard but it is not what i ment.

It is no problem to place more MultiComboBoxColums in my grid.
Also no problem to add a datasource to them.
But to get 2 columns when i click on the editor (just like the example were you are referring to) works in that example only on one MultiComboBoxColumn.
I want to fill all three MultiComboBoxColumns like that way.
I can't find any example to do that.

ps. my project is in VB

Ferry

[Richard Slade]

Hello Ferry,

Here is a VB exmaple as per the example at the link where it has more than one column as a multicolumncombo, each with two columns.

Designer File

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

    'Form overrides dispose to clean up the component list.
    <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

    '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.RadGridView1 = New Telerik.WinControls.UI.RadGridView()
        CType(Me.RadGridView1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'RadGridView1
        '
        Me.RadGridView1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.RadGridView1.Location = New System.Drawing.Point(0, 0)
        Me.RadGridView1.Name = "RadGridView1"
        Me.RadGridView1.Size = New System.Drawing.Size(383, 327)
        Me.RadGridView1.TabIndex = 0
        Me.RadGridView1.Text = "RadGridView1"
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(383, 327)
        Me.Controls.Add(Me.RadGridView1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        CType(Me.RadGridView1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub
    Friend WithEvents RadGridView1 As Telerik.WinControls.UI.RadGridView

End Class

Form1.vb

Imports Telerik.WinControls.UI
Imports System.ComponentModel

Public Class Form1

    Private orderColumnAdded As Boolean
    Private devColumnAdded As Boolean

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim orderList As New BindingList(Of Order)()
        orderList.Add(New Order(1234, 1))
        orderList.Add(New Order(1324, 12))
        orderList.Add(New Order(2345, 34))

        Dim devList As New BindingList(Of DevEnv)()
        devList.Add(New DevEnv(1, "VS 2005"))
        devList.Add(New DevEnv(2, "VS 2008"))
        devList.Add(New DevEnv(3, "VS 2010"))

        Dim people As New BindingList(Of Person)()
        people.Add(New Person("Richard", 1234, 3))
        people.Add(New Person("Ferry", 2345, 2))

        Dim colName As GridViewTextBoxColumn = New GridViewTextBoxColumn()
        colName.FieldName = "Name"
        colName.HeaderText = "Name"
        Me.RadGridView1.Columns.Add(colName)

        Dim colOrder As GridViewMultiComboBoxColumn = New GridViewMultiComboBoxColumn()
        colOrder.DataSource = orderList
        colOrder.DisplayMember = "Quantity"
        colOrder.ValueMember = "OrderID"
        colOrder.FieldName = "OrderID"
        colOrder.HeaderText = "Order Num"
        Me.RadGridView1.Columns.Add(colOrder)

        Dim colDev As GridViewMultiComboBoxColumn = New GridViewMultiComboBoxColumn()
        colDev.DataSource = devList
        colDev.DisplayMember = "DevName"
        colDev.ValueMember = "DevId"
        colDev.FieldName = "DevId"
        colDev.HeaderText = "Dev Environment"
        Me.RadGridView1.Columns.Add(colDev)


        AddHandler RadGridView1.CellBeginEdit, AddressOf radGridView1_CellBeginEdit

        Me.RadGridView1.DataSource = people
    End Sub

    Private Sub radGridView1_CellBeginEdit(ByVal sender As Object, ByVal e As GridViewCellCancelEventArgs)
        If Me.RadGridView1.CurrentColumn.Name = "OrderId" Then
            If (Not orderColumnAdded) Then
                orderColumnAdded = True
                Dim editor As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
                editor.EditorControl.MasterTemplate.AutoGenerateColumns = False
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("OrderID"))
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("Quantity"))
                editor.AutoSizeDropDownToBestFit = True
            End If
        End If
        If Me.RadGridView1.CurrentColumn.Name = "DevId" Then
            If (Not devColumnAdded) Then
                devColumnAdded = True
                Dim editor As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
                editor.EditorControl.MasterTemplate.AutoGenerateColumns = False
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("DevId"))
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("DevName"))
                editor.AutoSizeDropDownToBestFit = True
            End If
        End If
    End Sub
End Class

Public Class Order
    Public Sub New(ByVal orderId As Integer, ByVal orderQty As Integer)
        Me.OrderId = orderId
        Me.Quantity = orderQty
    End Sub

    Public Property OrderId As Integer
    Public Property Quantity As Integer
End Class

Public Class DevEnv
    Public Sub New(ByVal devId As Integer, ByVal devName As String)
        Me.DevId = devId
        Me.DevName = devName
    End Sub

    Public Property DevId As Integer
    Public Property DevName As String
End Class

Public Class Person
    Public Sub New(ByVal Name As String, ByVal orderId As Integer, ByVal devId As Integer)
        Me.Name = Name
        Me.OrderId = orderId
        Me.DevId = devId
    End Sub

    Public Property OrderId As Integer
    Public Property DevId As Integer
    Public Property Name As String
End Class

Hope that helps but let me know if you need more information
Richard

[Ferry Engels]

Richard,

Thank you for such a quick reply.

This is what i ment. But it works not the way it should be.
When i click on the first MultiComboBoxColumn i got 2 colums belonging to that  MultiComboBoxColumn.
Then when i click on the second  MultiComboBoxColumn i get 4 colums, 2 from the first (without data in it) and 2 from the  MultiComboBoxColumn that i clicked on.
When i click on the first again it display also 4 columns (the other way around).
I followd the code in debug mode and the code works the way it should be.

Then i tried to clear the colums before filling them, that works but the next problem is that i get second time i clicked the same  MultiComboBoxColumn  i get a null reference error.

So i removed the flags and now it works because the colums are filled every time i click on them.

So now it is working but is this the right approuch. It feels not right do you now what i mean.

i included my code

But many thanks,

Ferry

Private Sub radGridView1_CellBeginEdit(ByVal sender As Object, ByVal e As GridViewCellCancelEventArgs)
      If TypeOf Me.RadGridView1.CurrentColumn Is GridViewMultiComboBoxColumn Then
          If Me.RadGridView1.CurrentColumn.Name = "CodeColumn" Then
              If (Not isCodeColumnAdded) Then
                  'isCodeColumnAdded = True
                  Dim editor1 As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
                  editor1.EditorControl.MasterTemplate.AutoGenerateColumns = False
                  editor1.EditorControl.Columns.Clear()
                  editor1.EditorControl.Columns.Add(New GridViewTextBoxColumn("FaktCode"))
                  editor1.EditorControl.Columns.Add(New GridViewTextBoxColumn("FaktRegel"))
                  editor1.AutoSizeDropDownToBestFit = True
              End If
          End If
          If Me.RadGridView1.CurrentColumn.Name = "KpltsColumn" Then
              If (Not isKsPltsColumnAdded) Then
                  'isKsPltsColumnAdded = True
                  Dim editor2 As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
                  editor2.EditorControl.MasterTemplate.AutoGenerateColumns = False
                  editor2.EditorControl.Columns.Clear()
                  editor2.EditorControl.Columns.Add(New GridViewTextBoxColumn("Kostenplaats"))
                  editor2.EditorControl.Columns.Add(New GridViewTextBoxColumn("Omschrijving"))
                  editor2.AutoSizeDropDownToBestFit = True
              End If
          End If
      End If
  End Sub

[Richard Slade]

Hi Ferry,

Apologies. I should have picked that up. The reason for this is that the ActiveEditor already has the columns (the editors in RadGridView are re-used). You cannot clear them in this way. try clicking on the first row, first column, then the first row, second column, then the first row first column again. This throws a null reference exception.

I'm a little fried to continue tonight (it's after midnight here), but I'll look again in the morning for you. The documentation states about having this 'dirty' flag to ensure columns are not re-created, and in theory, this should be simple to get it working for more than one. I'll look again tomorrow when I'm a bit fresher. Sorry I couldn't get that sorted for you tonight.
Richard

[Richard Slade]

Hi Ferry,

ok, as you said you need to clear the columns. The RadGridView as I mentioned re-uses it's editors so using more than one it's required to clear them first. For reference, here is my example again which is now working correctly.

Imports Telerik.WinControls.UI
Imports System.ComponentModel

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim orderList As New BindingList(Of Order)()
        orderList.Add(New Order(1234, 1))
        orderList.Add(New Order(1324, 12))
        orderList.Add(New Order(2345, 34))

        Dim devList As New BindingList(Of DevEnv)()
        devList.Add(New DevEnv(1, "VS 2005"))
        devList.Add(New DevEnv(2, "VS 2008"))
        devList.Add(New DevEnv(3, "VS 2010"))

        Dim people As New BindingList(Of Person)()
        people.Add(New Person("Richard", 1234, 3))
        people.Add(New Person("Ferry", 2345, 2))

        Dim colName As GridViewTextBoxColumn = New GridViewTextBoxColumn()
        colName.FieldName = "Name"
        colName.HeaderText = "Name"
        Me.RadGridView1.Columns.Add(colName)

        Dim colOrder As GridViewMultiComboBoxColumn = New GridViewMultiComboBoxColumn()
        colOrder.DataSource = orderList
        colOrder.DisplayMember = "Quantity"
        colOrder.ValueMember = "OrderID"
        colOrder.FieldName = "OrderID"
        colOrder.HeaderText = "Order Num"
        Me.RadGridView1.Columns.Add(colOrder)

        Dim colDev As GridViewMultiComboBoxColumn = New GridViewMultiComboBoxColumn()
        colDev.DataSource = devList
        colDev.DisplayMember = "DevName"
        colDev.ValueMember = "DevId"
        colDev.FieldName = "DevId"
        colDev.HeaderText = "Dev Environment"
        Me.RadGridView1.Columns.Add(colDev)

        Me.RadGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill

        AddHandler RadGridView1.CellBeginEdit, AddressOf radGridView1_CellBeginEdit

        Me.RadGridView1.DataSource = people
    End Sub

    Private Sub radGridView1_CellBeginEdit(ByVal sender As Object, ByVal e As GridViewCellCancelEventArgs)
        If TypeOf RadGridView1.CurrentColumn Is GridViewMultiComboBoxColumn Then
            Dim editor As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
            editor.EditorControl.MasterTemplate.AutoGenerateColumns = False
            editor.EditorControl.Columns.Clear()
            If Me.RadGridView1.CurrentColumn.Name = "OrderID" Then
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("OrderID"))
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("Quantity"))
            End If
            If Me.RadGridView1.CurrentColumn.Name = "DevId" Then
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("DevId"))
                editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("DevName"))
            End If
            editor.AutoSizeDropDownToBestFit = True
        End If

    End Sub

End Class

Public Class Order
    Public Sub New(ByVal orderId As Integer, ByVal orderQty As Integer)
        Me.OrderId = orderId
        Me.Quantity = orderQty
    End Sub

    Public Property OrderId As Integer
    Public Property Quantity As Integer
End Class

Public Class DevEnv
    Public Sub New(ByVal devId As Integer, ByVal devName As String)
        Me.DevId = devId
        Me.DevName = devName
    End Sub

    Public Property DevId As Integer
    Public Property DevName As String
End Class

Public Class Person
    Public Sub New(ByVal Name As String, ByVal orderId As Integer, ByVal devId As Integer)
        Me.Name = Name
        Me.OrderId = orderId
        Me.DevId = devId
    End Sub

    Public Property OrderId As Integer
    Public Property DevId As Integer
    Public Property Name As String
End Class

designer

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

    'Form overrides dispose to clean up the component list.
    <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

    '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.RadGridView1 = New Telerik.WinControls.UI.RadGridView()
        CType(Me.RadGridView1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'RadGridView1
        '
        Me.RadGridView1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.RadGridView1.Location = New System.Drawing.Point(0, 0)
        Me.RadGridView1.Name = "RadGridView1"
        Me.RadGridView1.Size = New System.Drawing.Size(383, 327)
        Me.RadGridView1.TabIndex = 0
        Me.RadGridView1.Text = "RadGridView1"
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(383, 327)
        Me.Controls.Add(Me.RadGridView1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        CType(Me.RadGridView1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub
    Friend WithEvents RadGridView1 As Telerik.WinControls.UI.RadGridView

End Class

If you think I can be of further help, please just let me know
Thanks
Richard

[Ferry Engels]

Yes Richard, thank you.
I changed my code because your one is shorter.
Best Regards

Ferry

[Richard Slade]

Glad that helped
All the best
Richard

[Ernez]

hi,

how can i use this FilterDescriptor with two GridViewMultiComboBoxColumn

i tried using this code but it fails when i click the second gridviewmulticomboboxcolumn the filter aren't  working

[quote]Private Sub radGridView1_CellBeginEdit(ByVal sender As Object, ByVal e As GridViewCellCancelEventArgs) ' Handles RadGridView1.CellBeginEdit
        If TypeOf Me.RadGridView1.CurrentColumn Is GridViewMultiComboBoxColumn Then

            If RadGridView1.Columns.Item(Me.RadGridView1.CurrentColumn.Index).Name = "column1" Then
                If (Not codeColumnAdded) Then
                    codeColumnAdded = True
                    Dim editor1 As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
                    editor1.EditorControl.Columns.Clear()
                    'If editor1.Rows.Count = 0 Then
                    'editor.EditorControl.MasterTemplate.AutoGenerateColumns = False
                    'editor.DataSource = DT_CHARTS
                    'editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("Code"))
                    'editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("Description"))
                    'editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("Type"))

                    editor1.AutoFilter = True
                    editor1.DisplayMember = "Description"

                    Dim filter As New FilterDescriptor()
                    filter.PropertyName = editor1.DisplayMember
                    filter.Operator = FilterOperator.Contains
                    editor1.EditorControl.MasterTemplate.FilterDescriptors.Add(filter)
                    editor1.DropDownSizingMode = SizingMode.UpDownAndRightBottom
                    editor1.AutoSizeDropDownToBestFit = True
                    'End If
                End If

            ElseIf RadGridView1.Columns.Item(Me.RadGridView1.CurrentColumn.Index).Name = "column2" Then
                If (Not accColumnAdded) Then
                    accColumnAdded = True
                    Dim editor As RadMultiColumnComboBoxElement = CType(Me.RadGridView1.ActiveEditor, RadMultiColumnComboBoxElement)
                    editor.EditorControl.Columns.Clear()
                    'If editor.Rows.Count = 0 Then
                    'editor.EditorControl.MasterTemplate.AutoGenerateColumns = False
                    'editor.DataSource = DT_ACCOUNTS
                    'editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("AccountNo"))
                    'editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("AccName"))
                    'editor.EditorControl.Columns.Add(New GridViewTextBoxColumn("Branch"))
                    editor.AutoFilter = True
                    editor.DisplayMember = "AccName"

                    Dim filter As New FilterDescriptor()
                    filter.PropertyName = editor.DisplayMember
                    filter.Operator = FilterOperator.Contains
                    editor.EditorControl.MasterTemplate.FilterDescriptors.Add(filter)
                    editor.DropDownSizingMode = SizingMode.UpDownAndRightBottom
                    editor.AutoSizeDropDownToBestFit = True
                    'End If
                End If
            End If
        End If

    End Sub
[/quote]

[Dimitar]

Hello Ernez,

Thank you for contacting us.

This solution is valid for the version it was created for (2010.3 10.1215). Currently, if you want to achieve similar behaviour you need to use the CellEditorInitialized event which is fired after the CellBeginEdit. For example you can set the datasource and add filter to the underlying grid with the following code:

Private Sub radGridView1_CellEditorInitialized(sender As Object, e As GridViewCellEventArgs)
    If TypeOf Me.radGridView1.CurrentColumn Is GridViewMultiComboBoxColumn Then
        If radGridView1.Columns(Me.radGridView1.CurrentColumn.Index).Name = "column1" Then
            Dim editor1 As RadMultiColumnComboBoxElement = DirectCast(Me.radGridView1.ActiveEditor, RadMultiColumnComboBoxElement)

            editor1.DataSource = GetTable()

            editor1.EditorControl.EnableFiltering = True

            editor1.DisplayMember = "Name"

            Dim filter As New FilterDescriptor()
            filter.PropertyName = editor1.DisplayMember
            filter.[Operator] = FilterOperator.Contains
            filter.Value = "in"

            editor1.EditorControl.FilterDescriptors.Add(filter)
            editor1.DropDownSizingMode = SizingMode.UpDownAndRightBottom
            editor1.AutoSizeDropDownToBestFit = True
        End If
    End If
End Sub

Let me know if you have additional questions.

 

Regards,
Dimitar
Telerik