如何制作“全选”在sumoselect jquery的页面加载上默认选中 [英] How to make the "select all" checked by default on page load for sumoselect jquery
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问题描述
我使用Sumoselect jquery填充ASP.Net WebForms页面中的下拉列表，但是在页面加载时我无法选中全选选项，以便在页面加载时选择所有下拉列表值。
我尝试了什么：
这是我的aspx代码 - -
I am using Sumoselect jquery for populating the dropdown list in my ASP.Net WebForms page, but on page load I am unable to make the selection "Select All" checked so that all the dropdowns values were being selected on page load.
What I have tried:
This is my aspx code---
<%@ Page Language="C#" AutoEventWireup="true" Inherits="Dropdown1" CodeBehind="Dropdown1.aspx.cs" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<script type="text/javascript" src="jquery.sumoselect.min.js"></script>
<link href="sumoselect.css" rel="stylesheet" />
<script type="text/javascript">
$(document).ready(function () {
$('#<%=lstBoxTest.ClientID%>').SumoSelect({selectAll:true});
});
</script>
<style type="text/css">
body {
font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
color: #444;
font-size: 13px;
}
p, div, ul, li {
padding: 0px;
margin: 0px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<asp:ListBox runat="server" ID="lstBoxTest" SelectionMode="Multiple">
<asp:ListItem Text="Red" Value="0"></asp:ListItem>
<asp:ListItem Text="Green" Value="1"></asp:ListItem>
<asp:ListItem Text="Yellow" Value="2"></asp:ListItem>
<asp:ListItem Text="Blue" Value="3"></asp:ListItem>
<asp:ListItem Text="Black" Value="4"></asp:ListItem>
</asp:ListBox>
<asp:Button Text="Get Values" Visible="false" ID="btnGetSelectedValues" OnClick="btnGetSelectedValues_Click" runat="server" />
</form>
</body>
</html>
这是我的代码---
and this is my code behind---
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Dropdown1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnGetSelectedValues_Click(object sender, EventArgs e)
{
string selectedValues = string.Empty;
foreach (ListItem li in lstBoxTest.Items)
{
if (li.Selected == true)
{
selectedValues += li.Text + ",";
}
}
Response.Write(selectedValues.ToString());
}
}
推荐答案
（文件）。 ready（function（）{
(document).ready(function () {
（'＃<％= lstBoxTest.ClientID％>'）。SumoSelect（{selectAll：true}）;
}）;
< / script>
< style type =text / css>
body {
font-family：'Helvetica Neue'，Helvetica，Arial，sans-serif;
颜色：＃444;
字体大小：13px;
}
p，div，ul，li {
padding：0px;
保证金：0px;
}
< / style>
< / head>
< body>
< form id =form1runat =server>
< asp：ListBox runat =serverID =lstBoxTestSelectionMode =Multiple>
< asp：ListItem Text =RedValue =0>< / asp：ListItem>
< asp：ListItem Text =GreenValue =1>< / asp：ListItem>
< asp：ListItem Text =YellowValue =2>< / asp：ListItem>
< asp：ListItem Text =BlueValue =3>< / asp：ListItem>
< asp：ListItem Text =BlackValue =4>< / asp：ListItem>
< / asp：ListBox>
< asp：Button Text =Get ValuesVisible =falseID =btnGetSelectedValuesOnClick =btnGetSelectedValues_Clickrunat =server/>
< / form>
< / body>
< / html>
('#<%=lstBoxTest.ClientID%>').SumoSelect({selectAll:true}); }); </script> <style type="text/css"> body { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; color: #444; font-size: 13px; } p, div, ul, li { padding: 0px; margin: 0px; } </style> </head> <body> <form id="form1" runat="server"> <asp:ListBox runat="server" ID="lstBoxTest" SelectionMode="Multiple"> <asp:ListItem Text="Red" Value="0"></asp:ListItem> <asp:ListItem Text="Green" Value="1"></asp:ListItem> <asp:ListItem Text="Yellow" Value="2"></asp:ListItem> <asp:ListItem Text="Blue" Value="3"></asp:ListItem> <asp:ListItem Text="Black" Value="4"></asp:ListItem> </asp:ListBox> <asp:Button Text="Get Values" Visible="false" ID="btnGetSelectedValues" OnClick="btnGetSelectedValues_Click" runat="server" /> </form> </body> </html>
这是我的代码---
and this is my code behind---
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Dropdown1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnGetSelectedValues_Click(object sender, EventArgs e)
{
string selectedValues = string.Empty;
foreach (ListItem li in lstBoxTest.Items)
{
if (li.Selected == true)
{
selectedValues += li.Text + ",";
}
}
Response.Write(selectedValues.ToString());
}
}
查看文档 [ ^ ]，您需要调用selectAll方法：
Looking at the documentation[^], you need to call theselectAllmethod:
这篇关于如何制作“全选”在sumoselect jquery的页面加载上默认选中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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