Show/Hide columns in SelectedIndexChanged event of imbedded RadComboBox

[Jan Pfeffer]

Hey at Telerik

I have tried for hours now to show/hide columns depending on the selected index of an in a RadGrid imbedded RadComboBox.

The problem is that if i try to rebind in the SelectedIndexChanged event of the imbedded RadComboBox the Inserted Item is disposed.

If i don't rebind the visibility of the columns are not refreshed.

protected void rgvEgenskaber_PreRender(object sender, EventArgs e)
    {
        if (this.rgvEgenskaber.MasterTableView.IsItemInserted || this.rgvEgenskaber.EditItems.Count > 0)
        {
            GridEditableItem gridEditableItem = null;
            if (this.rgvEgenskaber.MasterTableView.IsItemInserted)
                gridEditableItem = this.rgvEgenskaber.MasterTableView.GetInsertItem();
            else
                gridEditableItem = this.rgvEgenskaber.EditItems[0] as GridEditableItem;
            DLDataContext dLDataContext = new DLDataContext();
            Egenskab egenskab = dLDataContext.Egenskabs.First(eg => eg.Egenskabid.Equals(Guid.Parse(((RadComboBox)((GridDataItem)gridEditableItem)["EgenskabID"].Controls[1]).SelectedValue)));
            //if (gridEditableItem.DataItem != null)
            //{
            this.rgvEgenskaber.MasterTableView.Columns.OfType<GridColumn>().Where(c => c.UniqueName.Equals("Valglistevaerdi") || c.UniqueName.Equals("Decimalvaerdi") || c.UniqueName.Equals("Heltalsvaerdi")).ToList().ForEach(c => c.Visible = false);
            switch (egenskab.Type)
            {
                case "H":
                    this.rgvEgenskaber.MasterTableView.GetColumn("Heltalsvaerdi").Visible = true;
                    break;
                case "D":
                    this.rgvEgenskaber.MasterTableView.GetColumn("Decimalvaerdi").Visible = true;
                    break;
                case "V":
                    this.rgvEgenskaber.MasterTableView.GetColumn("Valglistevaerdi").Visible = true;
                    break;
                default:
                    break;
            }
        }
    }
protected void rcbEgenskabID_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
    {
        this.rgvEgenskaber.MasterTableView.Rebind();
  }

 

protected void rgvEgenskaber_ItemCommand(object source, GridCommandEventArgs e)
    {
        switch (e.CommandName)
        {
            case RadGrid.InitInsertCommandName:
                e.Canceled = true;
                if (Request.QueryString["elementType"] != null && Request.QueryString["elementId"] != null)
                {
                    string elementType = Request.QueryString["elementType"];
                    string elementId = Request.QueryString["elementId"];
                    DLContext.DLDataContext dLDataContext = new DLDataContext();
                    Bestemmelse bestemmelse = dLDataContext.Bestemmelses.First(b => b.Bestemmelseid.Equals(Guid.Parse(elementId)));
                    Egenskab egenSkab = dLDataContext.Egenskabs.First();
                    Egenskabsforklaring egenskabsforklaring = dLDataContext.Egenskabsforklarings.First();
                    if (!e.Item.OwnerTableView.IsItemInserted)
                        e.Item.OwnerTableView.InsertItem(new Egenskabsvaerdi() { Egenskabsvaerdiid = Guid.NewGuid(),  Egenskab = egenSkab, Egenskabsforklaring = egenskabsforklaring, Bestemmelse = bestemmelse });
                }
                break;
            case RadGrid.PageCommandName:
                break;
            default:
                break;
        }
    }

 

I hope you can help me with this problem.

Sincerly Jan

[Maria Ilieva]

Hello Jan,

Please try to hide the columns by using display set to "none"  instead of the "visible" property. In this case calling Rebind() would not be needed. Give this a try and let me know how it goes.

Regards,
Maria Ilieva
the Telerik team

[Jan Pfeffer]

Hey Maria

The only thing i can do on the GridColumn under the PreRender event is set the Display property, besides the Visible property.
Setting the Display property doesn't work either.
Below is my PreRender event method.

Sincerly

Jan

protected void rgvEgenskaber_PreRender(object sender, EventArgs e)
    {
        if (this.rgvEgenskaber.MasterTableView.IsItemInserted || this.rgvEgenskaber.EditItems.Count > 0)
        {
            GridEditableItem gridEditableItem = null;
            if (this.rgvEgenskaber.MasterTableView.IsItemInserted)
                gridEditableItem = this.rgvEgenskaber.MasterTableView.GetInsertItem();
            else
                gridEditableItem = this.rgvEgenskaber.EditItems[0] as GridEditableItem;
            DLDataContext dLDataContext = new DLDataContext();
            Guid guid = Guid.Empty;
            if (Guid.TryParse(((RadComboBox)((GridDataItem)gridEditableItem)["EgenskabID"].Controls[1]).SelectedValue, out guid))
            {
                Egenskab egenskab = dLDataContext.Egenskabs.First(eg => eg.Egenskabid.Equals(guid));
                this.rgvEgenskaber.MasterTableView.Columns.OfType<GridColumn>().Where(c => c.UniqueName.Equals("Egenskabsdomaeneid") || c.UniqueName.Equals("Decimalvaerdi") || c.UniqueName.Equals("Heltalsvaerdi")).ToList().ForEach(c => c.Visible = false);
                switch (egenskab.Type)
                {
                    case "H":
                        this.rgvEgenskaber.MasterTableView.GetColumn("Heltalsvaerdi").Display = this.rgvEgenskaber.MasterTableView.GetColumn("Heltalsvaerdi").Visible = true;
                        break;
                    case "D":
                        this.rgvEgenskaber.MasterTableView.GetColumn("Decimalvaerdi").Display = this.rgvEgenskaber.MasterTableView.GetColumn("Decimalvaerdi").Visible = true;
                        break;
                    case "V":
                        this.rgvEgenskaber.MasterTableView.GetColumn("Egenskabsdomaeneid").Display = this.rgvEgenskaber.MasterTableView.GetColumn("Egenskabsdomaeneid").Visible = true;
                        break;
                    default:
                        break;
                }
            }
        }
    }

[Jan Pfeffer]

Hey Maria

Seems like it worked if only the Diaplay property is used.

Sorry for the inconvenience.

Sincerly

Jan

[Maria Ilieva]

Hi Jan,

Thank you for updating us on this thread. I'm glad the provided suggestion helps.

Do not hesitate to contact Telerik Support in case any other issues appear.

Kind regards,
Maria Ilieva
the Telerik team