How to set the value into radcombobox

Question

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I am trying to set value to raddropdownlist using javascript.

What I have tried:

JavaScript

  var dropdownlist = $find("<%= rcbLayout.ClientID %>");
  var item = dropdownlist.findItemByText(rlvControllers._dataSource[itemIndex].FORMLAYOUT);
item.select();

markup:

ASP.NET

<asp:Label ID="LayoutLabel" runat="server" Text="Form Layout:"></asp:Label>
<telerik:RadDropDownList RenderMode="Lightweight" ID="rcbLayout" Width="250px" DataTextField="TEXT" DataValueField="VALUE" runat="server"></telerik:RadDropDownList>

Posted 14-Nov-18 20:28pm

Syf AK

Updated 15-Nov-18 5:52am

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Vincent Maverick Durano · Accepted Answer · 2018-11-15T05:52:00

According to the documentation, you can use select() or set_selected(true) function.

Looking at your code, it seems like your are doing it right. You just have to make sure that the value of rlvControllers._dataSource[itemIndex].FORMLAYOUT that you passed in the findItemByText() method exist in your dropdownlist DataTextField or else it won't work. One thing to note that you could also use the findItemByValue() method if you want to select the value based on the dropdownlist DataValueField.