How to Sort Datalist Using Dropdownlist

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Hi frnds... i have a drop down list

XML

<asp:DropDownList ID="DDLSorting" runat="server" AutoPostBack="True" onselectedindexchanged="DDLSorting_SelectedIndexChanged"
                        >
                        <asp:ListItem>Best Match</asp:ListItem>
                        <asp:ListItem>New Arrivals</asp:ListItem>
                        <asp:ListItem Value="3" Text="Price: Low to High"></asp:ListItem>
                        <asp:ListItem>Price: High to Low</asp:ListItem>
                        <asp:ListItem>Highest Discount</asp:ListItem>
                    </asp:DropDownList>

and Datalist control
i have to sort DaTALIST by selecting these items from dropdown

please help me friends

Posted 7-Nov-12 21:12pm

sreeCoderMan

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vivektiwari97701 · Answer 1 · 2012-11-07T21:50:00

Solution 1

C#

private void showData(string sortDirection)
    {
        //get your data in desired sorting and bind to data list here

    }

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        showData(DropDownList1.SelectedValue);
    }

Posted 7-Nov-12 21:50pm

vivektiwari97701

Member 10293675 · Answer 2 · 2014-04-11T19:28:00

C#

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    bindDropDownList();
}

private void bindDropDownList()
{
    DropDownList1.DataTextField = "price";
    DataList1.DataSourceID = null;
    DataList1.DataSource = getReader();
    DropDownList1.DataBind();

}

private SqlDataReader getReader()
{
    SqlDataReader reader = null;

    if(DropDownList1.Text == "-Select-")
    {
      string strConnectionString =
            ConfigurationManager.ConnectionStrings["ProBizConnection"].ConnectionString;
        SqlConnection myConnect = new SqlConnection(strConnectionString);

        string strCommandText ="SELECT * FROM [Category ] WHERE catID<= 20";

        SqlCommand cmd = new SqlCommand(strCommandText, myConnect);
        myConnect.Open();

   reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

    }
    else if (DropDownList1.SelectedValue == "Price - Highest to Lowest")
    {
        string strConnectionString =
            ConfigurationManager.ConnectionStrings["ProBizConnection"].ConnectionString;
        SqlConnection myConnect = new SqlConnection(strConnectionString);

        string strCommandText = "SELECT catID, packageName, price, description1, description2, image1, image2 FROM Category WHERE catID <= 20 ORDER BY price desc";

        SqlCommand cmd = new SqlCommand(strCommandText, myConnect);
        myConnect.Open();

   reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

    }

    else if (DropDownList1.DataTextField == "Price - Lowest to Highest")
    {
        /string strConnectionString =
            ConfigurationManager.ConnectionStrings["ProBizConnection"].ConnectionString;
        SqlConnection myConnect = new SqlConnection(strConnectionString);

        string strCommandText = "SELECT catID, packageName, price, description1, description2, image1, image2 FROM Category WHERE catID <= 20 ORDER BY price";

        SqlCommand cmd = new SqlCommand(strCommandText, myConnect);
        myConnect.Open();

   reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

    }
    return reader;
}