Create a web form with a drop down list containing the department ids. As soon as the user selects a particular Department id the employees of the department should be fetched from the database...

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Create a web form with a drop down list containing the department ids. As soon as the user selects a particular Department id the employees of the department should be fetched from the database and listed in a tabular format

Posted 7-Mar-14 18:57pm

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Peter Leow 8-Mar-14 1:06am

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SanSkun · Answer 1 · 2014-03-07T20:11:00

Hi,
Here is the solution for your question:

Create 2 table in sql server
1-> Table for Department named tblDepartment habing fields a)DeptId int
b)DeptName nvarchar(30)
2->Table for employees named tblEmployes having fields a)id int,
b)EmployeeId nvarchar(30),
c)DeptId int,
D)Employee Name etc add field name as per your requirement.

Note: What ever the value of DeptId in tblDepartment should be same for DeptId in tblEmployes values.

ASPX code:

ASP.NET

<pre><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:DropDownList ID="ddlDepartment" runat="server"  AutoPostBack="True" 
            onselectedindexchanged="ddlDepartment_SelectedIndexChanged">
        </asp:DropDownList>
        <asp:GridView ID="gvEmployes" runat="server" AutoGenerateColumns="false">
        </asp:GridView>
    </div>
    </form>
</body>
</html>

Code Behind:

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;

public partial class _Default : System.Web.UI.Page 
{
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["connection"].ConnectionString.ToString());
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindDepartmentIds();
        }
    }
    private void BindDepartmentIds()
    {
        try
        {
            con.Open();
            SqlDataAdapter da = new SqlDataAdapter("select * from tblDepartment",con);
            DataSet dsDepartment = new DataSet();
            da.Fill(dsDepartment);
            ddlDepartment.DataTextField = "DeptId";
            ddlDepartment.SelectedValue = "DeptId";
            ddlDepartment.DataSource = dsDepartment;
            ddlDepartment.DataBind();
        }
        catch { }
        finally { con.Close(); }
    }
    protected void ddlDepartment_SelectedIndexChanged(object sender, EventArgs e)
    {
        try
        {
            con.Open();
            SqlDataAdapter da = new SqlDataAdapter("Select * from tblEmployes where deptid='"+ddlDepartment.SelectedValue.ToString()+"'",con);
            DataSet dsEmployees = new DataSet();
            da.Fill(dsEmployees);
            gvEmployes.DataSource = dsEmployees;
            gvEmployes.DataBind();
        }
        catch { }
        finally { con.Close(); }
    }
}