dropdownlist确定传选中的值问题．在线等．急
我现在用dropdownlist做了一个三级联动,我想用三级联动选出来的ID用post的方法(就是as.asp?id=19的方法)传到另一个页面.(我的意思是: 品牌(下拉) 系列(下拉) 具体某一个产品(下拉) 确定按钮　当我按下确定时，就能把我选好的产品ＩＤ值传来我指定的页面．怎么实现)

cs源码
if(!IsPostBack)
{
ddlCategoryBind();

ddlCategory1Bind();
ddlCategory2Bind();
ddlCategory3Bind();



}


}


private void ddlCategoryBind()
{
Db.Category myCategory = new Db.Category();

DataSet ds = myCategory.dsCategoryDeepID4( "4 ");
for(int i=0;i <ds.Tables[0].Rows.Count;i++)
{
if(ds.Tables[0].Rows[i][2].ToString()== "001 ")
{
ds.Tables[0].Rows[i][3] = ds.Tables[0].Rows[i][3].ToString();
}
else
{
for(int j=1;j <int.Parse(ds.Tables[0].Rows[i][2].ToString());j++)
{
ds.Tables[0].Rows[i][3] = "|__ " + ds.Tables[0].Rows[i][3].ToString();
}
}
}

ddlCategory.DataSource = ds.Tables[0].DefaultView;
ddlCategory.DataTextField = "Category ";
ddlCategory.DataValueField = "OrderID ";
ddlCategory.DataBind();
}

private void ddlCategory1Bind()
{
Db.Category myCategory = new Db.Category();

DataSet ds = myCategory.dsCategoryFatherID4(ddlCategory.SelectedValue);

ddlCategory1.DataSource = ds.Tables[0].DefaultView;
ddlCategory1.DataTextField = "Category ";
ddlCategory1.DataValueField = "OrderID ";
ddlCategory1.DataBind();
Label4.Text=ddlCategory.SelectedValue;
}

private void ddlCategory2Bind()
{
Db.Category myCategory = new Db.Category();
Label1.Text = ddlCategory1.SelectedValue;
DataSet ds = myCategory.dsCategoryFatherID41(ddlCategory1.SelectedValue);

ddlCategory2.DataSource = ds.Tables[0].DefaultView;
ddlCategory2.DataTextField = "proname ";
ddlCategory2.DataValueField = "id ";
ddlCategory2.DataBind();
Label2.Text = ddlCategory2.SelectedValue;
}
private void ddlCategory3Bind()
{
Db.Category myCategory = new Db.Category();
Label1.Text = ddlCategory2.SelectedValue;
DataSet ds = myCategory.dsCategoryFatherID41(ddlCategory2.SelectedValue);

ddlCategory3.DataSource = ds.Tables[0].DefaultView;
ddlCategory3.DataTextField = "proname ";
ddlCategory3.DataValueField = "id ";
ddlCategory3.DataBind();
//Label2.Text = ddlCategory2.SelectedValue;
}

private void ddlCategory_SelectedIndexChanged(object sender, System.EventArgs e)
{
ddlCategory1Bind();
}

private void ddlCategory1_SelectedIndexChanged(object sender, System.EventArgs e)
{
ddlCategory2Bind();
}

private void ddlCategory2_SelectedIndexChanged(object sender, System.EventArgs e)
{
ddlCategory3Bind();
}

/*好象就是下面的程序有点问题，我想把上面选中的值通过下面方法传，如何实现*/
private void butt_Click(object sender, System.EventArgs e)
{
Response.Redirect( "wsgw/box.asp?id=Label2.Text ");
}


#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.ddlCategory.SelectedIndexChanged += new System.EventHandler(this.ddlCategory_SelectedIndexChanged);
this.ddlCategory1.SelectedIndexChanged += new System.EventHandler(this.ddlCategory1_SelectedIndexChanged);
this.ddlCategory2.SelectedIndexChanged += new System.EventHandler(this.ddlCategory2_SelectedIndexChanged);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion
}
}


[解决办法]
下班了,这么多代码,来不及看了.88
[解决办法]
Response.Redirect( "wsgw/box.asp?id= "+Label2.Text);

[解决办法]
Response.Redirect( "wsgw/box.asp?id=Label2.Text ");
不对吧,应该
Response.Redirect( "wsgw/box.asp?id= "+Label2.Text);