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RadNumericTextBox - only double?

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wnl
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wnl asked on 26 Oct 2009, 09:20 AM
Hi,
I'm using RadNumericTextBox and I set DataType = System.Decimal.
But in code the value is double from this TextBox.
Is it normal?

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Daniel
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answered on 26 Oct 2009, 10:41 AM
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
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wnl
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answered on 26 Oct 2009, 10:58 AM
Ok.
In which cases we can use DataType? Any example?
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Daniel
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answered on 29 Oct 2009, 01:30 PM
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
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wnl
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answered on 20 Nov 2009, 01:46 PM
Thanks Daniel.
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maina
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answered on 28 Sep 2010, 05:15 PM

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?





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Cori
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answered on 30 Sep 2010, 04:39 PM
Hello Maina,

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

I hope that helps.
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maina
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answered on 30 Sep 2010, 11:32 PM
Thanks! Cori. I will just do the convert.
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wnl
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