Dynamic increment using Dropdown

Satyapriyanayak
Posted by Satyapriyanayak under ASP.NET category on | Points: 40 | Views : 1063
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Dynamic_increment_using_Dropdown._Default" %>

<!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 runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="EmpId" Font-Bold="True"
Width="100px"></asp:Label>
<asp:DropDownList ID="DropDownList1" runat="server"/><br />
<asp:Label ID="Label2" runat="server" Text="EmpName" Font-Bold="True" Width="100px"></asp:Label>
<asp:TextBox ID="txt_empname" runat="server"></asp:TextBox><br />
<asp:Label ID="Label3" runat="server" Text="Salary" Font-Bold="True" Width="100px"></asp:Label>
<asp:TextBox ID="txt_sal" runat="server"></asp:TextBox><br />
</div>

<asp:Button ID="btn_insert" runat="server" onclick="btn_insert_Click"
Text="Insert Data" /><br />
<asp:Label ID="Label4" runat="server"></asp:Label>
</form>
</body>
</html>

using System;
using System.Collections;
using System.Configuration;
using System.Data;
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;
using System.Data.SqlClient;
namespace Dynamic_increment_using_Dropdown
{
public partial class _Default : System.Web.UI.Page
{
string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
string str;
SqlCommand com;
int count;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DropDownList1.Items.Add("Select");
SqlConnection con = new SqlConnection(strConnString);
str = "select count(*) from employee";
com = new SqlCommand(str, con);
con.Open();
count = Convert.ToInt16(com.ExecuteScalar()) + 1;
DropDownList1.Items.Add("E00" + count);
con.Close();
}

}

protected void btn_insert_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(strConnString);
con.Open();
str = "insert into employee values('" + DropDownList1.SelectedItem.Text.Trim() + "','" + txt_empname.Text.Trim() + "'," + txt_sal.Text.Trim() + ")";
com = new SqlCommand(str, con);
com.ExecuteNonQuery();
con.Close();
Label4.Text = "Records successfully Inserted";
}
}
}

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