Create a database name trail and then execute the following script
CREATE TABLE [dbo].[checklist]( [id] [int] IDENTITY(1,1) NOT NULL, [skill] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ) ON [PRIMARY]
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="listboxsave.aspx.cs" Inherits="listboxsave" %>
<!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" runat="server">
<title>Untitled Page</title>
<script type="text/javascript" language="javascript">
function projectselect()
{
var BaseControl = null;
BaseControl = document.getElementById('<%= this.form1.ClientID %>');
if (BaseControl == null)
return false;
var ChildControl = "ListBox1";
var Inputs = BaseControl.getElementsByTagName("input");
for (var n = 0; n < Inputs.length; ++n)
if (Inputs[n].type == 'ListBox' && Inputs[n].id.indexOf(ChildControl, 0) >= 0 && Inputs[n].checked)
var valid= true;
if(!valid)
{
alert('Select at least one ..!');
return false;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style=" color:blue; font-style:normal ">
How to use ListBox and
<br /> ClearSelection method in asp.net
</h2>
<asp:ListBox ID="ListBox1" runat="server" SelectionMode="Multiple" Font-Size="Medium" Font-Italic="true">
<asp:ListItem Value="HI">HI</asp:ListItem>
<asp:ListItem Value="HOW">HOW</asp:ListItem>
<asp:ListItem Value="ARE">ARE</asp:ListItem>
<asp:ListItem Value="YOU">YOU</asp:ListItem>
</asp:ListBox><br />
<asp:Label ID="Label1" runat="server" Text="" Font-Size="Medium" ForeColor=" blue" ></asp:Label>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Select atleast one" ControlToValidate="ListBox1"></asp:RequiredFieldValidator><br /><br />
<asp:Button ID="Button1" runat="server" Text="SUBMIT" onclick="Button1_Click" Height="30" Font-Bold="true" ForeColor="blue" OnClientClick="projectselect()"; />
<asp:Button ID="Button2" runat="server" Text="Clear" onclick="Button2_Click" Height="30"
Font-Bold="true"
ForeColor="blue"/>
</div>
</form>
</body>
</html>
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class listboxsave : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string con = ConfigurationManager.ConnectionStrings["check"].ConnectionString;
var sSkill = "";
ListBox project = FindControl("ListBox1") as ListBox;
foreach (ListItem oItem in project.Items)
{
if (oItem.Selected)
{
if (sSkill.Length == 0)
sSkill = oItem.Value;
else
sSkill = sSkill + " " + oItem.Value;
}
}
if (sSkill != "")
{
SqlConnection sqlcon = new SqlConnection(con);
SqlCommand cmd = new SqlCommand();
cmd.Connection = sqlcon;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "INSERT INTO [checklist] values(@skill)";
cmd.Parameters.AddWithValue("@skill", sSkill);
sqlcon.Open();
cmd.ExecuteNonQuery();
Label1.Text = sSkill + " was saved sucessesfully";
sqlcon.Close();
}
}
protected void Button2_Click(object sender, EventArgs e)
{
ListBox1.ClearSelection();
Label1.Text = "";
}
}
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