public partial class _Default : System.Web.UI.Page
{
private static Dictionary<string ,string> di=new Dictionary<string ,string>();
protected void Page_Load(object sender, EventArgs e)
{
//自动生成刷新页面前的动态控件
if (!this.IsPostBack)
{
ViewState.Add("count", 0);
di.Clear();
}
else
{
int i=0;
foreach (KeyValuePair<string, string> pair in di)
{
if(pair.Key=="TextBox")
{
this.PlaceHolder2.Controls.Add(new LiteralControl("TextBox" + i + " :"));
TextBox tb = new TextBox();
tb.ID = "TextBox" + i;
this.PlaceHolder2.Controls.Add(tb);
i++;
}
else
{
this.PlaceHolder2.Controls.Add(new LiteralControl("DropDownList" + i+ " :"));
DropDownList ddl = new DropDownList();
ListItem li = new ListItem("123", "123");
ddl.Items.Add(li);
this.PlaceHolder2.Controls.Add(ddl);
i++;
}
}
}
}
private void CreateControl(int number)
{
}
protected void Button2_Click(object sender, EventArgs e)
{
int Max = 0;
for (int i = 0; i < Int32.Parse(ViewState["count"].ToString()); i++)
{
Max += Int32.Parse((this.FindControl("Textbox" + i) as TextBox).Text);
}
}
protected void Button1_Click(object sender, EventArgs e)
{
this.PlaceHolder2.Controls.Add(new LiteralControl("TextBox" + ViewState["count"].ToString() + " :"));
TextBox tb = new TextBox();
tb.ID = "TextBox" + ViewState["count"].ToString();
this.PlaceHolder2.Controls.Add(tb);
ViewState["count"] = Int32.Parse(ViewState["count"].ToString()) + 1;
di.Add("TextBox", ViewState["count"].ToString());
this.PlaceHolder2.Controls.Add(new LiteralControl("DropDownList" + ViewState["count"].ToString() + " :"));
DropDownList ddl = new DropDownList();
ListItem li = new ListItem("123","123");
ddl.Items.Add(li);
ddl.ID = "DropDownList" + ViewState["count"].ToString();
this.PlaceHolder2.Controls.Add(ddl);
ViewState["count"] = Int32.Parse(ViewState["count"].ToString()) + 1;
di.Add("DropDownList", ViewState["count"].ToString());
}