asp.net C# 获取动态控件值的问题

Question

 for (int i = 0; i < j; i++)
        {
            DropDownList t = new DropDownList();
            t.ID = "a" + i.ToString();
            t.DataSource = source;
            t.DataTextField = "ppositions";
            t.DataBind();
            t.Height = 25;
            TextBox d = new TextBox();
            d.ID = "b" + i.ToString();
            d.Width = 40;
            d.Height = 20;
            TextBox c = new TextBox();
            c.ID = "c" + i.ToString();
            c.Width = 40;
            c.Height = 20;
            TextBox f = new TextBox();
            f.ID = "f" + i.ToString();
            f.Width = 40;
            RangeValidator r = new RangeValidator();
            r.ID = "r" + i.ToString();
            r.ControlToValidate = "f" + i.ToString();
            r.ErrorMessage="只能输入数字";
            //r.Type = "Integer";
            this.Panel1.Controls.Add(t);
            this.Panel2.Controls.Add(d);
            this.Panel3.Controls.Add(c);
            this.Panel4.Controls.Add(f);
        }
添加控件是成功了，可老是取不到值，我要做的是往数据库里填数据的模块，谁知道怎么取动态生成控件的值啊？ 尽量详细些  最好给个例子看看  感激不尽

Answer 1

这是个老问题了 ，我也在网上找过答案，但没改出来，这些动态添加的控件是不是不在PAGE上，根本找不到

Answer 2

给控件注册一个事件，绑定到自己写的方法上。
然后方法通过事件处理方法的 object sender 参数获取控件的任何值

Answer 3

给一段代码给你参考下哦..
不知道是不是你要的那个:
protected void Page_Load(object sender, EventArgs e)
    {
        
        DropDownList drp;
        TextBox txt;
        Label lbl;
        for (int i = 0; i < 4; i++)
        {
            drp = new DropDownList();
            drp.ID = "drp" + i.ToString();
            drp.Width = 120;
                        txt = new TextBox();
            txt.ID = "txt" + i.ToString();
            txt.Width = 120;            lbl = new Label();
            lbl.ID = "lbl" + i.ToString();
            lbl.Width = 120;            this.form1.Controls.Add(drp);
            this.form1.Controls.Add(txt);
            this.form1.Controls.Add(lbl);
            
        }
        if (!IsPostBack)
            bindDrp0();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        DropDownList drp0=(DropDownList) this.Page.FindControl("drp0");
        Label lbl0 = (Label)this.Page.FindControl("lbl0");
        lbl0.Text = drp0.SelectedValue;
    }    private void bindDrp0()
    {
        for (int i = 0;i < 4; i++ )
        {
            DropDownList drp0 = (DropDownList)this.Page.FindControl("drp0");
            drp0.Items.Add(new ListItem(i.ToString(), i.ToString()));
        }
    }

Answer 4

我也会是这样写的，查找控件就是找不到，苍天啊，我搞了1天半了
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Generic;
using OAManagerBLL;
using OAManagerModel;
using System.Drawing;public partial class CheckSet : System.Web.UI.Page
{
    private CheckTimeManager ctm = new CheckTimeManager();
    private List<CheckTime> list = null;
    int listcount = 0;    protected void Page_Load(object sender, EventArgs e)
    {        if (!Page.IsPostBack)
        {
            csDivb.Visible = false;
        }
        CreateList();
    }    //选择日期段，插入数据库并查询出来
    protected void btnSet_Click(object sender, EventArgs e)
    {
        string start = this.txtStart.Text.Trim();
        string end = this.txtEnd.Text.Trim();        if (!string.IsNullOrEmpty(start) && !string.IsNullOrEmpty(end))
        {
            CheckTime ctStart = new CheckTime(start);
            CheckTime ctEnd = new CheckTime(end);
            ctm.AddDates(ctStart, ctEnd);
            list = ctm.GetSomeCheckTime(ctStart, ctEnd);
            if (list != null)
            {
                listcount = list.Count;
                ViewState["listcount"] = listcount;
            }
        }
        CreateList();
    }    //动态创建表格行列和lable
    protected void CreateList()
    {
        csDivb.Visible = true;
        Label lbl = null;
        TableRow tr = null;
        TableCell tc = null;        int rs = listcount / 7 + 1;
        string str = "";        tr = new TableRow();
        tr.Cells.Clear();        string[] strings = { "星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日" };
        for (int i = 0; i < strings.Length; i++)
        {
            lbl = new Label();
            tc = new TableCell();
            lbl.Text = strings[i];
            tc.Controls.Add(lbl);
            tr.Cells.Add(tc);
            tc.HorizontalAlign = HorizontalAlign.Center;
            tr.VerticalAlign = VerticalAlign.Middle;
            cstable.Rows.Add(tr);
        }        int n = 0;
        for (int row = 1; row <= rs; row++)
        {
            tr = new TableRow();
            for (int cs = row * 7; cs < (row + 1) * 7; cs++)
            {
                tc = new TableCell();
                if (n < listcount)
                {
                    if (n == 0)
                    {
                        str = list[0].CheckDate.Trim();
                        DateTime dt = Convert.ToDateTime(str);
                        int s = int.Parse(dt.DayOfWeek.ToString("d"));                        if (s == 0)
                        {
                            s = 7;
                        }                        for (int i = 0; i < s; i++)
                        {
                            tc = new TableCell();
                            tc.BackColor = Color.White;
                            tr.Cells.Add(tc);
                            cstable.Rows.Add(tr);
                        }
                        cs = cs + s - 1;
                    }
                    str = list[n].CheckDate.Trim();
                    lbl = new Label();
                    lbl.ID = "lbl" + n.ToString();
                    lbl.Text = str.Substring(0, str.IndexOf(" "));
                    lbl.EnableViewState = true;
                    tc.BackColor = Color.GreenYellow;
                    tc.Controls.Add(lbl);
                    tc.HorizontalAlign = HorizontalAlign.Center;
                    n++;
                }
                lbl.Attributes.Add("onClick", "cellClick(this)");//点击改变lable背景颜色
                tr.Cells.Add(tc);
            }
            cstable.Rows.Add(tr);
            cstable.EnableViewState = true;
            csDivb.EnableViewState = true;
        }    }    //获取背景颜色，根据颜色判定他是休息日还是工作日
    protected void btnOver_Click(object sender, EventArgs e)
    {
        csDivb.Visible = false;
        int i = Convert.ToInt32(ViewState["listcount"]);
        for (int m = 0; m < i; m++)
        {
            Label lb = this.Page.FindControl("lbl" + m.ToString()) as Label;
            if (lb.BackColor == Color.GreenYellow)
            {
                CheckTime ct = new CheckTime();//日期类
                ct.CheckDate = lb.Text.Trim();
                ct.TimeState = new TimeState(1);
            }
            else
            {
                if (!string.IsNullOrEmpty(lb.Text.Trim()))
                {
                    CheckTime ct = new CheckTime();
                    ct.CheckDate = lb.Text.Trim();
                    ct.TimeState = new TimeState(2);
                }
            }
        }
    }
}

Answer 5

http://www.360doc.com/content/10/0326/17/466494_20367875.shtml
这个不知道对你有没有用 ，我也还没试过