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RadCalculatorDropdown Value with 2 decimal digits

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CalculatorDropDown
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Agung
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Agung asked on 11 Sep 2018, 06:16 PM

Hi,

How to assign RadCalculatorDropdown.Value always with number decimal digit each equals button click.

for example:

i have input 22 / 7

but result is 3,1428571428571428571428571429

i want the result is 3,1429 with 4 digit decimal

thanks

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Dess | Tech Support Engineer, Principal
Telerik team
answered on 12 Sep 2018, 11:41 AM
Hello, Agung,          

RadCalculatorEditorContentElement is a derivative of the RadTextBoxElement which hosts the standard MS TextBox. It does not offer formatting out of the box. Additionally, the RadCalculatorDropDownElement.Value property accepts decimal values. Hence, in order to force some custom format to the calculator, you can use a RadMaskedEditBox and add the arrow button that shows the calculator popup. Here is a sample implementation: 

RadCalculatorDropDownElement calculatorElement = new RadCalculatorDropDownElement();
 
public RadForm1()
{
    InitializeComponent();
      
    this.radMaskedEditBox1.MaskType = MaskType.Numeric;
    this.radMaskedEditBox1.Mask = "N4";
    CultureInfo culture = System.Threading.Thread.CurrentThread.CurrentCulture.Clone() as CultureInfo;
    this.radMaskedEditBox1.Culture = culture;
    calculatorElement.PopupClosed += calculatorElement_PopupClosed;
    calculatorElement.BorderPrimitive.Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
    calculatorElement.EditorContentElement.Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
    StackLayoutElement stackPanel = new StackLayoutElement();
    stackPanel.Orientation = Orientation.Horizontal;
    stackPanel.Margin = new Padding(1, 0, 1, 0);
    stackPanel.Children.Add(calculatorElement);
    RadTextBoxItem tbItem = this.radMaskedEditBox1.MaskedEditBoxElement.TextBoxItem;
    this.radMaskedEditBox1.MaskedEditBoxElement.Children.Remove(tbItem);
 
    DockLayoutPanel dockPanel = new DockLayoutPanel();
    dockPanel.Children.Add(stackPanel);
    dockPanel.Children.Add(tbItem);
    DockLayoutPanel.SetDock(tbItem, Telerik.WinControls.Layouts.Dock.Left);
    DockLayoutPanel.SetDock(stackPanel, Telerik.WinControls.Layouts.Dock.Right);
    this.radMaskedEditBox1.MaskedEditBoxElement.Children.Add(dockPanel);
}
 
private void calculatorElement_PopupClosed(object sender, RadPopupClosedEventArgs args)
{
    this.radMaskedEditBox1.Value = calculatorElement.Value;
}


I hope this information helps. If you need any further assistance please don't hesitate to contact me.

Regards,
Dess
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Agung
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answered on 13 Sep 2018, 09:59 AM

Hi Dess,

thanks for your help,

i just have covered some code and create some custom component

class calculator : Telerik.WinControls.UI.RadCalculatorDropDown
{
    RadTextBoxItem tbitem = new RadTextBoxItem();
    RadMaskedEditBox editBox = new RadMaskedEditBox();
 
    public calculator()
    {
        editBox = new RadMaskedEditBox();
        editBox.MaskType = MaskType.Numeric;
        editBox.Mask = "N4";
        CultureInfo culture = System.Threading.Thread.CurrentThread.CurrentCulture.Clone() as CultureInfo;
        tbitem = editBox.MaskedEditBoxElement.TextBoxItem;
        RadTextBoxItem ti = this.CalculatorElement.EditorContentElement.TextBoxItem;
        this.CalculatorElement.EditorContentElement.Children.Remove(ti);
        this.CalculatorElement.EditorContentElement.Children.Add(tbitem);
        tbitem.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
        base.ValueChanged += this.value_valuechanged;
    }
      
    //public double Nilai { get; set; }
      
    public override string ToString()
    {
        return string.Format("{0:N4}", base.Value);
    }
 
    private void value_valuechanged(object sender, EventArgs e)
    {
        try
        {
            //Nilai = Math.Round(double.Parse(base.Value.ToString(), System.Globalization.NumberStyles.Any), 5);
            editBox.Value = this.Value;
        }
        catch (StackOverflowException so)
        {
            throw so;
        }
        catch (Exception ex)
        {
            throw ex;
        }        
    }
 
}

 

thanks for helping

Regards

Agung

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CalculatorDropDown
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Agung
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Answers by
Dess | Tech Support Engineer, Principal
Telerik team
Agung
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