asp.net中动态控件使用

动态控件添加：

 TextBox _txt;
        int i =0; 
        try
        {
            i = Int32.Parse(TextBox1.Text);
        }
        catch{}
        if (i > 0)
        {
            for (int _i = 1; _i < i; _i++)
            {
                _txt = new TextBox();
                _txt.Text = _i.ToString();
                Panel1.Controls.Add(_txt);
            }
        }   

动态控件操作：

  double _dSum = 0;
        TextBox _txt;
        foreach (Control _ctl in Panel1.Controls)
        {

            if (_ctl is TextBox)
            {
                _txt = (TextBox)_ctl;
                _dSum += double.Parse(_txt.Text);
            }
            System.Diagnostics.Debug.Write("1" + _dSum.ToString());
        }
        System.Diagnostics.Debug.Write(_dSum.ToString());
        Button2.Text = _dSum.ToString();