public class department : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label Label1;
protected System.Web.UI.WebControls.DropDownList dd1;
protected System.Web.UI.WebControls.Button Button1;
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.ListBox ll1;
private void Page_Load(object sender, System.EventArgs e)
{//連接部門
if (!Page.IsPostBack)
{
SqlConnection con=db.creatconnection();
con.Open();
SqlCommand cmd =new SqlCommand("select *from department",con);
SqlDataReader sdr =cmd.ExecuteReader();
this.dd1.DataSource=sdr;
this.dd1.DataTextField="depname";
this.dd1.DataValueField="depid";
this.dd1.DataBind();
sdr.Close();
//連接員工
SqlCommand mycmd =new SqlCommand("select empid ,epname from emp where depid="+this.dd1.SelectedValue,con);
sdr=mycmd.ExecuteReader();
this.ll1.DataSource=sdr;
this.ll1.DataTextField="epname";
this.ll1.DataValueField="empid";
this.ll1.DataBind();
sdr.Close();
con.Close();
}
// 在此處放置用戶代碼以初始化頁面
}
#region Web 窗體設計器生成的代碼
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 該調用是 ASP.NET Web 窗體設計器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
/// 此方法的內容。
/// </summary>
private void InitializeComponent()
{
this.dd1.SelectedIndexChanged += new System.EventHandler(this.dd1_SelectedIndexChanged);
this.ll1.SelectedIndexChanged += new System.EventHandler(this.ll1_SelectedIndexChanged);
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void dd1_SelectedIndexChanged(object sender, System.EventArgs e)
{//實現部門員工的連動功能
string depid=this.dd1.SelectedValue;
SqlConnection con=db.creatconnection();
con.Open();
SqlCommand mycmd =new SqlCommand("select empid ,epname from emp where depid="+depid,con);
SqlDataReader sdr=mycmd.ExecuteReader();
this.ll1.DataSource=sdr;
this.ll1.DataTextField="epname";
this.ll1.DataValueField="empid";
this.ll1.DataBind();
sdr.Close();
con.Close();
}
private void ll1_SelectedIndexChanged(object sender, System.EventArgs e)
{
}
private void Button1_Click(object sender, System.EventArgs e)
{
TextBox1.Text=this.dd1.SelectedItem.ToString()+" "+this.ll1.SelectedItem.ToString();
}
}
}