AddSize.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Data;
using System.Data.SqlClient;
using System.Configuration;

public partial class AddSize : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindBrand();
            BindMainCategory();
            BindGender();
            BindrptrSize();
        }

    }

    private void BindrptrSize()
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EasyBuy123"].ConnectionString))
        {
            using (SqlCommand cmd = new SqlCommand("select A.*,B.*,C.*,D.*,E.* from tblSizes A inner join tblCategory B on B.CatID =a.CategoryID  inner join tblBrands C on C.BrandID =A.BrandID inner join tblSubCategory D on D.SubCatID =A.SubCategoryID inner join tblGender E on E.GenderID =A.GenderID ", con))
            {
                using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
                {
                    DataTable dt = new DataTable();
                    sda.Fill(dt);
                    rptrSize .DataSource = dt;
                    rptrSize.DataBind();
                }
            }
        }
    }

    private void BindMainCategory()
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EasyBuy123"].ConnectionString))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("Select * from tblCategory", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            if (dt.Rows.Count != 0)
            {
                ddlCategory .DataSource = dt;
                ddlCategory.DataTextField = "CatName";
                ddlCategory.DataValueField = "CatID";
                ddlCategory.DataBind();
                ddlCategory.Items.Insert(0, new ListItem("-Select-", "0"));

            }
        }
    }



    private void BindBrand()
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EasyBuy123"].ConnectionString))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("Select * from tblBrands", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            if (dt.Rows.Count != 0)
            {
                ddlBrand .DataSource = dt;
                ddlBrand.DataTextField = "Name";
                ddlBrand.DataValueField = "BrandID";
                ddlBrand.DataBind();
                ddlBrand.Items.Insert(0, new ListItem("-Select-", "0"));

            }
        }
    }



    private void BindGender()
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EasyBuy123"].ConnectionString))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("Select * from tblGender with(nolock)", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            if (dt.Rows.Count != 0)
            {
                ddlGender .DataSource = dt;
                ddlGender.DataTextField = "GenderName";
                ddlGender.DataValueField = "GenderID";
                ddlGender.DataBind();
                ddlGender.Items.Insert(0, new ListItem("-Select-", "0"));

            }
        }
    }

    protected void btnAddSize_Click(object sender, EventArgs e)
    {
        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EasyBuy123"].ConnectionString))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("Insert into tblSizes(SizeName,BrandID,CategoryID,SubCategoryID,GenderID) Values('" + txtSize .Text + "','" + ddlBrand .SelectedItem.Value + "','" + ddlCategory .SelectedItem.Value + "','" + ddlSubCategory .SelectedItem.Value + "','" + ddlGender .SelectedItem.Value + "')", con);
            cmd.ExecuteNonQuery();

            Response.Write("<script> alert('Size Added Successfully ');  </script>");
            txtSize.Text = string.Empty;

            con.Close();
            ddlBrand .ClearSelection();
            ddlBrand.Items.FindByValue("0").Selected = true;

            ddlCategory .ClearSelection();
            ddlCategory.Items.FindByValue("0").Selected = true;


            ddlSubCategory.ClearSelection();
            ddlSubCategory.Items.FindByValue("0").Selected = true;

            ddlGender.ClearSelection();
            ddlGender.Items.FindByValue("0").Selected = true;
            
        }
        BindrptrSize();
    }

    protected void ddlCategory_SelectedIndexChanged(object sender, EventArgs e)
    {
        int MainCategoryID = Convert .ToInt32 (ddlCategory.SelectedItem.Value);

        using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["EasyBuy123"].ConnectionString))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("Select * from tblSubCategory where MainCatID='"+ ddlCategory .SelectedItem .Value +"'", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            if (dt.Rows.Count != 0)
            {
                ddlSubCategory .DataSource = dt;
                ddlSubCategory.DataTextField = "SubCatName";
                ddlSubCategory.DataValueField = "SubCatID";
                ddlSubCategory.DataBind();
                ddlSubCategory.Items.Insert(0, new ListItem("-Select-", "0"));

            }
        }
    }
}