Sunday, 17 April 2016

set Dropdown List Selected Value (Text) based on text /value in asp.net using jQuery


set Dropdownlist selected value

Description:-


In this example we explain that how to set Dropdown List Selected Value (Text) based on text /value in asp.net using jQuery. Or set Dropdown List selected value or text using jQuery. Set dropdown value by text using jQuery. Setting select list ‘selected’ based on text using jQuery. Setting the selected value of a select control via its text description using jQuery.

Sometime we have requirement like when we edit record at that time the DrodownList value will be automatically set based on the value retrieve from the database.

JQuery provide map functions to set the Dropdown List selected value based on text or value.


 setdrpvalue.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="setdrpvalue.aspx.cs" Inherits="WebApplication1.setdrpvalue" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1">
    <title>set dropdownlist selected value based on text/value in asp.net using jQuery
    </title>
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.js"></script>
    <script type="text/javascript">
        $(function () {
            // Set Dropdownlist Selected Value by Text
            $('#btnText').click(function () {
                var selectedText = 'Australia';
                $('#drpCountry option').map(function () {
                    if ($(this).text() == selectedText) return this;
                }).attr('selected', 'selected');
            })
            // Set Dropdownlist Selected Value by Value
            $('#btnValue').click(function () {
                var selectedValue = '3';
                $('#drpCountry option').map(function () {
                    if ($(this).val() == selectedValue) return this;
                }).attr('selected', 'selected');
            })
        })
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <select id="drpCountry">
            <option value="1">India</option>
            <option value="2">Pakistan</option>
            <option value="3">Australia</option>
            <option value="4">USA</option>
            <option value="5">UK</option>
        </select>
    </div>
    <input type="button" value="Set By Text" id="btnText" />
    <input type="button" value="Set By Value" id="btnValue" />
    </form>
</body>
</html>



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