RadNumericTextBox - only double?

[wnl]

Hi,
I'm using RadNumericTextBox and I set DataType = System.Decimal.
But in code the value is double from this TextBox.
Is it normal?

[Daniel]

Hello Jaromin,

I confirm this is expected - RadNumericTextBox internally uses type "double" regardless of the DataType setting. Whatever the value type you assigned, it will be parsed to double? (if possible).

Furthermore, the Value property returns double? so it can't return decimal or another type.

Please let me know if you need more information.

Kind regards,
Daniel
the Telerik team

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[wnl]

Ok.
In which cases we can use DataType? Any example?

[Daniel]

Hello Jaromin,

DataType property determines what will be the data type that comes from DbValue property. Example:

Sample DataTable data source:

...
table.Columns.Add("ID", typeof(Decimal));

Sample setup:

<telerik:GridTemplateColumn>
   <ItemTemplate>
      <telerik:RadNumericTextBox ID="rntb1" DataType="System.Decimal" runat="server" DbValue='<%# Bind("myValue") %>' />
   ....

If you examine the DbValue property on ItemDataBound, you will notice that the data type is Decimal

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item is GridDataItem)
    {
        string dataType = (e.Item.FindControl("rntb1") as RadNumericTextBox).DbValue.GetType().ToString();
        RadAjaxPanel1.Alert(dataType);
    }
}

Best regards,
Daniel
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.

[wnl]

Thanks Daniel.

[maina]

The datatype shows as decimal but still I am not able to use it as a decimal unless I do a convert.
eg:

 

 

 

<telerik:RadNumericTextBox ID="rntCalories" runat="server" MaxLength="9"

 

 

 

NumberFormat-DecimalDigits="3" Width="110px" EnabledStyle-HorizontalAlign="Right" Type="Number" DataType="System.Decimal">

 

 

 

 

In c# page I have
decimal val = Convert.ToDecimal(this.rntCalories.DbValue)

because DbValue is a is an object. Is there any other way to use directly?

[Cori]

Hello Maina,

You will always have to convert the value into Decimal. There is no way to use it directly.

I hope that helps.

[maina]

Thanks! Cori. I will just do the convert.