using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
public partial class _Default : System.Web.UI.Page
{
protected string GetStyleOfbody()
{
return this.DropDownList1.SelectedValue;
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
NewMethod();
NewMethod1();
}
}
private void NewMethod1()
{
string str1 = "server=.;database=DataBind;integrated security=sspi";
DataSet ds1 = new DataSet();
using (SqlConnection sqlcnn1 = new SqlConnection())
{
sqlcnn1.ConnectionString = str1;
SqlCommand sqlcmm1 = sqlcnn1.CreateCommand();
sqlcmm1.CommandText = "select id,name from province";
SqlDataAdapter da1 = new SqlDataAdapter(sqlcmm1);
da1.Fill(ds1);
}
this.RadioButtonList1.DataSource = ds1.Tables[0];
this.RadioButtonList1.DataTextField = "name";
this.RadioButtonList1.DataValueField = "id";
this.DataBind();
}
private void NewMethod()
{
string str = "server=.;database=DataBind;integrated security=sspi";
DataSet ds = new DataSet();
using (SqlConnection sqlcnn = new SqlConnection())
{
sqlcnn.ConnectionString = str;
SqlCommand sqlcmm = sqlcnn.CreateCommand();
sqlcmm.CommandText = "select id, name from province";
SqlDataAdapter da = new SqlDataAdapter(sqlcmm);
da.Fill(ds);
}
this.DropDownList1.DataSource = ds.Tables[0];
this.DropDownList1.DataTextField = "name";
this.DropDownList1.DataValueField = "id";
this.DataBind();
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
string str = "server=.;database=DataBind;integrated security=sspi";
DataSet ds = new DataSet();
using (SqlConnection sqlcn = new SqlConnection())
{
sqlcn.ConnectionString = str;
SqlCommand sqlcm = sqlcn.CreateCommand();
sqlcm.CommandText = "select id,myid,name from city where
id=@id";
sqlcm.Parameters.Add(new SqlParameter("@id", this.DropDownList1.SelectedValue));
sqlcn.Open();
SqlDataAdapter sda = new SqlDataAdapter(sqlcm);
sda.Fill(ds);
}
this.DropDownList2.DataSource = ds.Tables[0];
this.DropDownList2.DataTextField = "name";
this.DropDownList2.DataValueField = "id";
this.DataBind();
}
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
string str = "server=.;database=DataBind;integrated security=sspi";
DataSet ds = new DataSet();
using (SqlConnection sqlcn = new SqlConnection())
{
sqlcn.ConnectionString = str;
SqlCommand sqlcm = sqlcn.CreateCommand();
sqlcm.CommandText = "select id,myid,name from city where
id=@id";
sqlcm.Parameters.Add(new SqlParameter("@id", this.RadioButtonList1.SelectedValue));
sqlcn.Open();
SqlDataAdapter sda = new SqlDataAdapter(sqlcm);
sda.Fill(ds);
}
this.RadioButtonList2.DataSource = ds.Tables[0];
this.RadioButtonList2.DataTextField= "name";
this.RadioButtonList2.DataValueField = "id";
this.DataBind();
}
}
