why i am not getting values in drop downlist

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Here is the source code which i have used

XML

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Asp.net Bind Data to Dropdownlist in inside of gridview</title>
 <style type="text/css">
        .TableCSS
        {
            border-style:none;
            background-color:Gray;
            width: 600px;
            }
        .TableHeader
        {
            background-color:Gray;
            color:White;
            font-size:large;
            font-family:Verdana;
            height:45px;
            }
        .TableData
        {
            background-color:Silver;
            color:White;
            font-family:Courier New;
            font-size:medium;
            font-weight:bold;
            height:30px;
            }
        .TablePager
        {
            background-color:Gray;

            height:50px;
            }
        .ButtonCSS
        {
            color:Black;
            height:35px;
            font-weight:bold;
            }
        .NumericButtonCSS
        {
            font-size:x-large;
            font-family:Courier New;
            color:White;
            font-weight:bold;
            }
        .CurrentPageLabelCSS
        {
            font-size:xx-large;
            font-family:Courier New;
            color:White;
            font-weight:bold;
            }
        .NextPreviousButtonCSS
        {
            font-size:large;
            font-family:Courier New;
            color:White;
            font-weight:bold;
            }
    </style>
</head>
<body>
<form id="form1" runat="server">
  <div>
        <h2 style="color:Navy; font-style:italic;">Smart Pin</h2>
        <hr width="575" align="left" color="PowderBlue" />
        <asp:SqlDataSource
            ID="SqlDataSource1"
            runat="server"
            ConnectionString="<%$ ConnectionStrings:sqlCon %>"
            SelectCommand="SELECT smartpin FROM Smart_id WHERE is_activate=1"
            >
        </asp:SqlDataSource>
        <br />
        <asp:ListView
            ID="gvUserInfo"
            runat="server"
            DataSourceID="SqlDataSource1"
            ondatabound="gvUserInfo_DataBound">
            <LayoutTemplate>
                <table id="Table1" runat="server" class="TableCSS">
                    <tr id="Tr1" runat="server" class="TableHeader">
                        <td id="Td1" runat="server">Smart Pin</td>
                         <td id="Tdselect" runat="server">Select Smart Pin</td>
                          <td id="Tdsponcorid" runat="server">Sponcor Id</td>
                    </tr>
                    <tr id="ItemPlaceholder" runat="server">
                    </tr>
                    <tr id="Tr2" runat="server" class="TablePager">
                        <td id="Td3" runat="server" colspan="2">
                            <asp:DataPager ID="DataPager1" runat="server">
                                <Fields>
                                    <asp:NextPreviousPagerField
                                        ButtonType="Button"
                                        ShowFirstPageButton="true"
                                        ShowNextPageButton="true"
                                        ShowPreviousPageButton="false"
                                        ButtonCssClass="ButtonCSS"
                                        />
                                    <asp:NumericPagerField
                                        NumericButtonCssClass="NumericButtonCSS"
                                        CurrentPageLabelCssClass="CurrentPageLabelCSS"
                                        NextPreviousButtonCssClass="NextPreviousButtonCSS"
                                        />
                                    <asp:NextPreviousPagerField
                                        ButtonType="Button"
                                        ShowLastPageButton="true"
                                        ShowNextPageButton="false"
                                        ButtonCssClass="ButtonCSS"
                                        />
                                </Fields>
                            </asp:DataPager>
                        </td>
                    </tr>
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr class="TableData">
                    <td>
                        <asp:Label
                            ID="Label1"
                            runat="server"
                            Text='<%# Eval("smartpin")%>'>
                        </asp:Label>
                    </td>
                  <td>
                  <asp:CheckBox ID="chksmart" runat="server" />

                  </td>
                  <td>
                  <asp:DropDownList ID="ddsponcor" runat="server" Width="100px" OnClick="ddsponcor_SelectedIndexChanged"/>
                  </td>
                </tr>
            </ItemTemplate>


      </asp:ListView>
    </div>
</form>
</body>
</html>

//and this code behind which i have used

C#

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 sendpin : System.Web.UI.Page
{
    SqlConnection con = new SqlConnection("Data Source=SHILPA;Initial Catalog=TreeDB;Integrated Security=True");

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGridview();
        }
    }
    // This method is used to bind gridview from database
    protected void BindGridview()
    {
        
                //ddl.Items.Insert(0, new ListItem("--Select--", "0"));
        DataTable dt = new DataTable();

        DropDownList ddl = new DropDownList();

        dt = DAL.Registration_Master.View();

        ddl.DataSource = dt;
        ddl.DataValueField = dt.Columns["sponcorid"].ToString();
        ddl.DataTextField = dt.Columns["sponcorid"].ToString();
        ddl.DataBind();

                        

    }

   
}

// i am not getting values which i have fetched from database in dropdownlist, please tell me where i am go wrong.

Posted 1-Dec-12 20:32pm

sumit kausalye

Updated 1-Dec-12 20:34pm

AmitGajjar

v2

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Comments

AmitGajjar 2-Dec-12 2:35am

is your datatable dt filled with data ?

1 solution

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__TR__ · Answer 1 · 2012-12-01T22:27:00

Solution 1

As Amith suggested make sure the dataTable has data. Also try replacing the below lines

C#

ddl.DataSource = dt;
ddl.DataValueField = dt.Columns["sponcorid"].ToString();
ddl.DataTextField = dt.Columns["sponcorid"].ToString();

with

C#

ddl.DataSource = dt;
ddl.DataValueField = "sponcorid";
ddl.DataTextField = "sponcorid";

Posted 1-Dec-12 22:27pm

__TR__

Comments

sumit kausalye 2-Dec-12 9:23am

it doesn't work still

__TR__ 2-Dec-12 9:27am

I see you have given "ddsponcor" as Id of the drop down but you are using ddl as Id in code behind. The Id in aspx and code behind file should be the same.