my 2nd dropdownlist is select financial year has years associated with it and when i am trying to select and year like 2011-2012 its not showing its value on button click instead its changing my selection to 1st one that is 2010-2011 same is happening if i select any other project code from my 1st dropdown i m able to select the 1st value in 2nd dropdownlist not the 2nd item?…..[whats happening is my 2nd dropdown which is showing values linked to my1st dropdownlist is not letting me select its 2nd value and submit if i m selecting the 2 nd value its automatically changing it to 1st value and displaying the result ?]
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 Default2 : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["connstr"].ConnectionString);
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand();
DataTable dt = new DataTable();
protected void Page_Load(object sender, EventArgs e)
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
if (Page.IsPostBack == false)
{
string query = "select * from project";
SqlCommand cmd = new SqlCommand(query, con);
cmd.CommandType = CommandType.Text;
SqlDataAdapter adp = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
adp.Fill(ds);
DropDownList1.DataSource = ds;
DropDownList1.DataValueField = ds.Tables[0].Columns[0].ToString();
DropDownList1.DataTextField = ds.Tables[0].Columns[1].ToString();
DropDownList1.DataBind();
DropDownList1.Items.Insert(0, "--Select--");
cmd.Dispose();
}
con.Close();
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
try
{
string query1 = "Select * from yearly where pid = " + DropDownList1.SelectedItem.Value.ToString();
SqlCommand cmd = new SqlCommand(query1, con);
DataSet ds = new DataSet();
SqlDataAdapter adp = new SqlDataAdapter(cmd);
adp.Fill(ds);
DropDownList2.DataSource = ds;
DropDownList2.DataValueField = ds.Tables[0].Columns[0].ToString();
DropDownList2.DataTextField = ds.Tables[0].Columns[1].ToString();
DropDownList2.DataBind();
DropDownList2.Items.Insert(0, "--Select--");
cmd.Dispose();
}
catch (Exception)
{
}
con.Close();
}
protected void Button2_Click(object sender, EventArgs e)
{
try
{
SqlDataAdapter da = new SqlDataAdapter("select pcode,fyyear,date,salary,ta,contigency,nrc,institcharges,others from monthly where pcode=('" + DropDownList1.SelectedItem.ToString() + "' ) AND fyyear=('" + DropDownList2.SelectedItem.ToString() + "')",con);
DataTable dt = new DataTable();
da.Fill(dt);
GridView1.DataSource = dt;
GridView1.DataBind();
}
catch (Exception ex)
{
ex.Message.ToString();
}
}
}
i am also attaching aspx code:
<%@ Page Title="" Language="C#" MasterPageFile="~/grid.master" AutoEventWireup="true" CodeFile="yearwiseex.aspx.cs" Inherits="Default2" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:Label ID="Label1" runat="server" Text="Select Project Code"></asp:Label>
<asp:DropDownList ID="DropDownList1" runat="server"
Height="20px" Width="130px"
onselectedindexchanged="DropDownList1_SelectedIndexChanged"
AutoPostBack="True"> </asp:DropDownList>
<asp:Label ID="Label2" runat="server" Text="Select Financial Year"></asp:Label>
<asp:DropDownList ID="DropDownList2" runat="server"
Height="20px" Width="130px"></asp:DropDownList>
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
<asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="Button" />
<br />
<br />
<br />
<br />
<asp:GridView ID="GridView1" runat="server" style="margin-left: 82px"
Width="90%" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None"
BorderWidth="1px" CellPadding="4" ForeColor="Black" GridLines="Vertical">
<AlternatingRowStyle BackColor="White" />
<FooterStyle BackColor="#CCCC99" />
<HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />
<RowStyle BackColor="#F7F7DE" />
<SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#FBFBF2" />
<SortedAscendingHeaderStyle BackColor="#848384" />
<SortedDescendingCellStyle BackColor="#EAEAD3" />
<SortedDescendingHeaderStyle BackColor="#575357" />
</asp:GridView>
<br />
<br />
</asp:Content>
I think you’re looking for MultiSelect. In that case, use a listbox:
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listbox.aspx
…and set the selection mode to “Multiple”.