skyline0217

foreach (object ctl in Panel1.Controls)
            {
                if (ctl.GetType() == typeof(TextBox))
                {
                    TextBox txt = (TextBox)ctl;
                    txt.Text = "";
                }
	    }
		
		
private void clean_pnl(ControlCollection pnlCon) //panel.Controls
    {
        //清空PANEL控制項的輸入值
        foreach (object ctl in pnlCon)
        {
            if (ctl.GetType() == typeof(TextBox))
            {
                TextBox txt = (TextBox)ctl;
                txt.Text = "";
            }
            if (ctl.GetType() == typeof(RadioButton))
            {
                RadioButton rb = (RadioButton)ctl;
                rb.Checked = false;
            }
            if (ctl.GetType() == typeof(DropDownList))
            {
                DropDownList ddl = (DropDownList)ctl;
                ddl.SelectedIndex = 0;
            }
            if (ctl.GetType() == typeof(RadioButtonList))
            {
                RadioButtonList rbl = (RadioButtonList)ctl;
                rbl.SelectedIndex = -1;
            }
            if (ctl.GetType() == typeof(CheckBox))
            {
                CheckBox cb = (CheckBox)ctl;
                cb.Checked = false;
            }

        }
    }