EditForm ComboBox Focus

[Miguel]

Hi Everyone

I am having trouble with a RequiredField Validator for a ComboBox in Edit Form.

This is the scenario:

I have a grid with 3 columns:
1 TemplateColumn with a ComboBox as its EditItemTemplate
2 GridNumericColumns

 

I’ve placed OnBlur and OnFocus events on the two NumericColumnEditors.

I’ve Placed a Compare Field Validator for the comboBox

I’ve also disabled the ComboBox when it is in the Edit form.

 

Now, this works fine when I am in the Insert Form but when I hit the edit command  I get this error:

 

htmlfile: Can't move focus to the control because it is invisible, not enabled, or of a type that does not accept the focus.


This is the JSCode:

var oldValue;
function Focus(sender, eventArgs)
{
     oldValue = sender.get_value();
}

function Blur (sender, eventArgs)
{
    if ( sender.get_value() < 0)
    {
         radalert('El valor no puede ser negativo',200,100,'Alerta');
         sender.set_value(oldValue);
    }
}

Markup:

<Columns>

    <telerik:GridTemplateColumn UniqueName="LINEA" HeaderText="Linea ISA" AllowFiltering="False">
        <ItemTemplate>
            <asp:Label ID="LIN" runat="server" Width="80px">
                   <%# DataBinder.Eval(Container.DataItem, "LINEA")%>
            </asp:Label>
        </ItemTemplate>
        <EditItemTemplate>
            <telerik:RadComboBox DataTextField="EQUIPO" DataValueField="EQUIPO" EnableLoadOnDemand="True"
                ID="RadCmbBx_Linea" runat="server" MarkFirstMatch="True" OnSelectedIndexChanged="RadCmbBx_Linea_SelectedIndexChanged"
                AutoPostBack="true">
            </telerik:RadComboBox>
            <asp:CompareValidator ValueToCompare="Select..." Operator="NotEqual" ControlToValidate="RadCmbBx_Linea"
                ErrorMessage="You must select a city!" runat="server" ID="Comparevalidator1" />
        </EditItemTemplate>
    </telerik:GridTemplateColumn>

    <telerik:GridNumericColumn DataField="ENERGIA_ACTIVA_HOY" UniqueName="ENERGIA_ACTIVA_HOY" HeaderText="Energia Hoy" />

    <telerik:GridNumericColumn DataField="ENERGIA_REACTIVA_HOY" UniqueName="ENERGIA_REACTIVA_HOY" HeaderText="Energia Hoy ReActiva" />

</Columns>

CodeBehind:

protected void RgridLineasISA_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item is GridEditableItem && (e.Item.IsInEditMode))
    {
        RadComboBox comboLinea = e.Item.FindControl("RadCmbBx_Linea") as RadComboBox;
        comboLinea.DataSource = new OES.Business.Equipo().ListLineasISA();
        comboLinea.DataBind();
        comboLinea.Items.Insert(0, new RadComboBoxItem("Select..."));

        if ((e.Item as GridEditableItem).IsInEditMode && (e.Item as GridEditableItem).IsDataBound && e.Item.ItemIndex != -1)
        {
            comboLinea.SelectedValue = ((OES_LineasISA)e.Item.DataItem).LINEA.ToString();
            comboLinea.Enabled = false;
    }
}

    protected void RgridLineasISA_ItemCreated(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridEditableItem && (e.Item.IsInEditMode))
        {
            GridNumericColumnEditor editorEnerActHoy = (GridNumericColumnEditor)e.Item.EditManager.GetColumnEditor("ENERGIA_ACTIVA_HOY");
            editorEnerActHoy.NumericTextBox.ClientEvents.OnBlur = "Blur";
            editorEnerActHoy.NumericTextBox.ClientEvents.OnFocus = "Focus";

            GridNumericColumnEditor editorEnerReactHoy = (GridNumericColumnEditor)e.Item.EditManager.GetColumnEditor("ENERGIA_REACTIVA_HOY");
            editorEnerReactHoy.NumericTextBox.ClientEvents.OnBlur = "Blur";
            editorEnerReactHoy.NumericTextBox.ClientEvents.OnFocus = "Focus";
        }
    }

The exception is due to the CompareValidator, if I remove it then it works, but I need it in order to validate the ComboBox selected item.

How can I get rid of this execption?

Thanks!
Miguel

[Miguel]

Hi guys, I really hope you can help me out!!! I have not been able to figure out what the problem is.

I appreciate your help!

Miguel!

[Nikolay Rusev]

Hello Miguel,

I am afraid that I am not able to replicate the behavior locally. However I suspect that is caused due to CompareValidatior that is attempting to return focus to control which is disabled.

All the best,
Nikolay
the Telerik team

[Miguel]

Is there anything else I can do for the CompareValidator?

[Nikolay Rusev]

Hello Miguel,

I am not sure about your use case, but you should avoid setting focus on invisible/disabled controls.

Greetings,
Nikolay
the Telerik team