[Solved] Combobox inserts "0" when first items value is > 0

[Thomas]

Environment:

• ASP.NET MVC 3
• VB.NET
• Razor ViewEngin
• Telerik MVC 2011-Q1.

 

I have a strange problem with the Combobox control.

If I run the following code in a View then "0" will be inserted as the first item when I press the "down" arrow,

 

@(Html.Telerik().ComboBox() _
        .Name("iComputerId") _
        .AutoFill(True) _
        .OpenOnFocus(False) _
        .HighlightFirstMatch(True) _
        .Items(Function(item) item.Add().Text("Item1").Value("1")) _
        .SelectedIndex(0))

But, if I run this code (note .value("0")), then the combobox will work as expected (i.e. only display "Item1").

 

 

@(Html.Telerik().ComboBox() _
        .Name("iComputerId") _
        .AutoFill(True) _
        .OpenOnFocus(False) _
        .HighlightFirstMatch(True) _
        .Items(Function(item) item.Add().Text("Item1").Value("0")) _
        .SelectedIndex(0))

The same problem occur if I bind the Combobox to a database and this causes a serious problem since it is very likely that there will not be any item that has "0" as its primary key i the queries I make.

[Georgi Krustev]

Hello Thomas,

 
The aforementioned issue could be caused when ComboBox UI component is named as a ViewData Key/Value pair. In other words if ViewData.iComputerId is 0, then selectedValue of the combobox will be also 0. The value will be applied on the client-side.

We will address this issue in the next official release of Telerik extensions for ASP.NET MVC.

Currently I can suggest you as a workaround rename the combobox or set the correct value using Value() method. Here us a code snippet showing how to implement second approach:

@(Html.Telerik().ComboBox()
        .Name("iComputerId")
        .AutoFill(true)
        .OpenOnFocus(false)
        .HighlightFirstMatch(true)
        .Items(item => item.Add().Text("Item1").Value("1"))
        .Value("1"))

As a token of gratitude for your involvement I have updated your Telerik points.

Regards,
Georgi Krustev
the Telerik team

[Nebras]

I have the same issue but i have no ViewData with the same name of the grid , any suggestions?

[Nebras]

??