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RadListBox runtime creating...

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ComboBox and ListBox (obsolete as of Q2 2010)

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David asked on 09 Jul 2008, 05:59 PM

Hi... im creating a RadListBox at runtime with a win app and it creates with the correct items but... I cant select any of them!!! =S... thats really weird and I've been trying many options... can you help me with that issue?

here's my code.

RadListBox

lista = new RadListBox();

for

(int j = 0; j < listaCuartoSel.Count; j++)

{

RadListBoxItem item = new RadListBoxItem();

item.Text = listaCuartoSel[j].Nombre;

string pathImagen = "ImagePath";

Image imagenCuarto = Image.FromFile(pathImagen);

item.Image = imagenCuarto;

item.Alignment =

ContentAlignment.TopLeft;

item.ImageAlignment =

ContentAlignment.MiddleRight;

item.TextImageRelation =

TextImageRelation.ImageBeforeText;

lista.Items.Add(item);

}

lista.Enabled =

true;

lista.Virtualized =

true;

lista.IsAccessible =

true;

lista.SelectedIndex = 0;

lista.Width = 300;

this

.Controls.Add(lista);

6 Answers, 1 is accepted

answered on 10 Jul 2008, 02:08 PM

Hello David,

You are selecting items, actually. However, since you are creating RadListBox at runtime only with your code, you do not have styling applied and therefore you are not able to observe the selection.

When creating RadListBox programmatically, you should call the EndInIt() method which will make the control styled:

    
            RadListBox lista = new RadListBox();  
        
            for(int j = 0; j < 10; j++)  
        
            {  
        
                RadListBoxItem item = new RadListBoxItem();  
        
                item.Text = j.ToString();  
        
                item.Alignment = ContentAlignment.TopLeft;  
        
                item.ImageAlignment = ContentAlignment.MiddleRight;  
        
                item.TextImageRelation = TextImageRelation.ImageBeforeText;  
        
                lista.Items.Add(item);  
        
            }  
        
            lista.Enabled = true;  
        
            lista.Virtualized = true;  
        
            lista.IsAccessible = true;  
        
            lista.SelectedIndex = 0;  
        
            lista.Width = 300;  
        
            this.Controls.Add(lista);  
        
            lista.EndInit();

If you have additional questions, feel free to contact me.

Sincerely yours,
Nikolay
the Telerik team

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answered on 23 Apr 2012, 04:19 AM

Hi,
I have one issue radgrid sorting is not reflected in Dataset.

I am sorting the radgrid after sorting the data in dataset is not sorting,

I have a scenario for this iam adding new rows to grid,new rows are updating to dataset.(there is no Datakey for thease records) for this we are not updating to DataBase.
After sorting,issue comes with deleting,i need to delete record from radgrid ,iam using e.item.datasetindex for deleting which is pointing to diff record in dataset.
what is the bestway to delete records from radgrid that weill effect in dataset after radgrid sorting.

Please help me with this issue.

Thanks,
Raj