如何将值设置为radcombobox [英] How to set the value into radcombobox

问题描述

我正在尝试使用javascript将值设置为raddropdownlist。



我尝试了什么：

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

加价：

 <   asp：标签    ID   =  LayoutLabel    runat   =  server   文字  = 表单布局： >  <   / asp：标签 >  
 <   telerik：RadDropDownList     RenderMode < /跨度>  = 轻量级    ID   =  rcbLayout   宽度  =  250px    DataTextField   =  TEXT    DataValueField   =  VALUE    runat   =  server >  <   / telerik：RadDropDownList  >  
 

解决方案

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

加价：

 <   asp：标签    ID   =  LayoutLabel    runat   =  server   文字  = 表单布局： >  <   / asp：标签 >  
 <   telerik：RadDropDownList     RenderMode < /跨度>  = 轻量级    ID   =  rcbLayout   宽度  =  250px    DataTextField   =  TEXT    DataValueField   =  VALUE    runat   =  server >  <   / telerik：RadDropDownList  >  
 

根据文档，您可以使用选择（ ）或 set_selected（true）函数。



看看你的代码，看起来你做得对。你只需要确保你在 findItemByText（） rlvControllers._dataSource [itemIndex] .FORMLAYOUT 的值c>方法存在于您的下拉列表 DataTextField 中，否则它将无效。有一点需要注意的是，如果要根据下拉列表选择值，可以使用 findItemByValue（）方法 DataValueField

I am trying to set value to raddropdownlist using javascript.

What I have tried:

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

markup:

<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>

解决方案

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

markup:

<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>

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.

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