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Luc
355
UltraComboEditor with checkBox in grid.
posted

Hi,

 

I have added a ComboEditor in a grid cell. I want to have multiple selections, so the CheckBoxStyle is CheckStyle.CheckBox.

 

I have created a DataTable with DataColumns in code and assigned to grid.DataSource.

(1) For the ComboEditor, what is the type of the DataColumn?

DataColumn dc = new DataColumn ("colName", typeof (???))';

(2) How can I access the check boxes when I create the grid? In the InitializeRow event of the grid, I create a ComboEditor and assign it to grid.EditorComponent, but when I fill the combeEditor items with ValueListItems with the CheckState = CheckState.Checked, none of the check boxes are checked. Only CheckState.Indeterminate will show a gray checked checkbox.

 

Regards and thanks.

 

 

 

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  • 69832
    Offline posted

    1) typeof(object), typeof(string), or System.Array. For example, if you wanted to provide a front end for multiple integers, you could use typeof(int[]).

    2) The checkboxes are a representation of the cell's value. For example, if the column's data type was typeof(int[]), and you assigned int[]{ 1, 3, 5 } to the cell, the three items corresponding to those values would be would be checked

Children
  • 355
    posted in reply to Brian Fallon

    Hi Brian,

     

    Thanks for the quick reply. It is working, except when I checked some check boxes and I change the focus to another cell, I get the following message:

     

     

    I created the DataTable and DatColumns

    DataTable dt = new DataTable ("dtBeeps");

    dc = new DataColumn ("colLeftG1Speakers", typeof (string[]));

    dt.Columns.Add (dc);
    grdBeeps.DataSource = dt;
    I assign a string array to the cell.Value for the items which have to be checked.
    In the InitializeLayout event, I added the combo editor to the column.
    speakers is of type string[]
    if (cc["colLeftG1Speakers"].EditorComponent == null)
    {
        UltraComboEditor combo = new UltraComboEditor ();
        combo.CheckedListSettings.CheckBoxStyle = Infragistics.Win.CheckStyle.CheckBox;
        combo.CheckedListSettings.EditorValueSource = EditorWithComboValueSource.CheckedItems;
        combo.CheckedListSettings.ItemCheckArea = ItemCheckArea.Item;
        foreach (string item in speakers)
        {
            ValueListItem vli = new ValueListItem (item, item);
            combo.Items.Add (vli);
        }
        cc["colLeftG1Speakers"].EditorComponent = combo;
    }
    Do I have to extract the checked values of the combo boxes to a string array?
    Thanks again.