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Adding DataSource to Ribbon Combo Box

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RibbonBar

This is a migrated thread and some comments may be shown as answers.

Brendan asked on 27 Feb 2008, 08:11 AM

Hi

I am having difficulty binding a RibbonBar ComboBox to a DataTable. I have created the RibbonBar control at Design-Time but all other objects are created at Run-Time for various application reasons.

I am able to create a ribbonbar, tab, chunk and combobox objects. The radComboBoxElement does not display in my chunk unless i set the autosize property to False and manually set the size property. I set the datasource, displaymember and valuememeber properties to valid entries as I would a normal combobox, but at runtime the combobox does not populate.

I have recreated the problem in a sample project below. I would appreciate any assistance anyone is able to offer. I have searched the forums but cannot find any articles specific to this issue.

Regards

Brendan

    
            Imports Telerik.WinControls  
        
            Imports Telerik.WinControls.UI  
        
            Public Class Form1  
        
            Friend tab1 As New TabItem  
        
                Friend commandtab1 As New RadRibbonBarCommandTab  
        
                Friend chunk1 As New RadRibbonBarChunk  
        
                Friend combo1 As New RadComboBoxElement  
        
                Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load  
        
                    Dim conSQLConnection As New SqlClient.SqlConnection("DATA SOURCE=SQLSERVER.DOMAIN.COM;Integrated Security=SSPI;INITIAL CATALOG=Table1")  
        
                    Dim adpTable1Adapter As New SqlClient.SqlDataAdapter("SELECT * FROM Table1", conSQLConnection)  
        
                    Dim tblTable1 As New DataTable  
        
                    conSQLConnection.Open()  
        
                    adpExpressAdapter.Fill(tblExpressComputers)  
        
                    tab1.Text = "Tab 1" 
        
                    commandtab1.Tab = tab1  
        
                    ribbon1.CommandTabs.Add(commandtab1)  
        
                    chunk1.Text = "Chunk 1" 
        
                    commandtab1.Items.Add(chunk1)  
        
                    combo1.AutoSize = False 
        
                    combo1.Size = New Drawing.Size(100, 20)  
        
                    combo1.DataSource = tblTable1Computers  
        
                    combo1.ValueMember = "computer_id" 
        
                    combo1.DisplayMember = "name" 
        
                    chunk1.Items.Add(combo1)  
        
                End Sub

2 Answers, 1 is accepted

Accepted

answered on 28 Feb 2008, 05:27 PM

Hi Brendan,

I reviewed carefully your code and I noticed that you are adding the combobox after binding to the data table. Because RadComboBoxElement is not a control, it could not be bound do a data source before it is added in the control's hierarchy. So the possible solution is to your code like this:

    
                    chunk1.Items.Add(combo1)   
        
                    combo1.DataSource = tblTable1Computers     
        
                    combo1.ValueMember = "computer_id"    
        
                    combo1.DisplayMember = "name"

I hope this helps.nIf you have any other questions, please do not hesitate to write us.

Regards,
Georgi
the Telerik team

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