绑定ASP：带有javascript数组的下拉列表 [英] Binding ASP:dropdownlist with javascript array

问题描述

大家好，



我想将asp：dropdownlist的数据源设置为Javascript数组。

数据以JavaScript格式提取并存储在数组中。现在我想将下拉列表DataSource设置为Javascript数组。

Hi All,

I want to set the asp:dropdownlist's datasource to Javascript array.
Data is fetched in JavaScript and stored in the array. Now I want to Set the dropdownlist DataSource to Javascript Array.

function showResults(results) {
         var resultItems = [];
         var resultCount = results.features.length;
         for (var i = 0; i < resultCount; i++) {
             var featureAttributes = results.features[i].attributes;
             for (var attr in featureAttributes) {
             resultItems.push("" + attr + ":  " + featureAttributes[attr] + "<br>");
           }
           resultItems.push("<br>");
         }
         dom.byId("info").innerHTML = resultItems.join("");

< asp：DropDownList ID =ddlLocationrunat =server >

< asp：ListItem Text =XYZValue =XYZi>





我尝试过：



在Script中声明函数并尝试绑定

<asp:DropDownList ID="ddlLocation" runat="server">
<asp:ListItem Text="XYZ" Value="XYZi">


What I have tried:

Declared the function in Script and try to bind

推荐答案

你必须在客户端这样做。



获取客户端下拉列表的一种方法：

You have to do it on the client side.

One way to get the dropdownlist on the client side:

var ddl_location = document.getElementById("<%=ddlLocation.ClientID%>");

然后使用数组数据填充下拉列表：

Then populate the dropdownlist with array data:

if ddl_location {
    for (var i=0; i < month.length;++i){    
        addOption(ddl_location, some_text_variable, some_value_variable);
    }
}

addOption = function(selectbox, text, value) {
    var optn = document.createElement("OPTION");
    optn.text = text;
    optn.value = value;
    selectbox.options.add(optn);  
}

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