想做一个数据库信息修改的功能
 private void FillMobile(ArrayList mList)
        {
            listView1.Items.Clear();
            foreach (Mobile m in mList)
            {
                ListViewItem Item = listView1.Items.Add(m.SimNo);
                Item.SubItems.Add(Convert.ToString(m.StartHour));
                Item.SubItems.Add(Convert.ToString(m.StartMinute));
                Item.SubItems.Add(Convert.ToString(m.EndHour));
                Item.SubItems.Add(Convert.ToString(m.EndMinute));
                Item.SubItems.Add(Convert.ToString(m.RetSpan));
            }

            label2.Text = string.Format("共计 {0} 条记录", listView1.Items.Count);
        }
这是我从数据库以创建集合形式写入listView，因为有有6个列，实际焦点只能在SimNo上，点击焦点，单击修改按键跳出新窗体，如何让新窗体6个textBox中赋值呢

最简单实用的是在跳出的窗体中添加一个构造函数，
例如：public EditForm(string s1,string s2,.....,string s6)
        {
             TextBox1.Text=s1;
             TextBox2.Text=s2;
             ......
             TextBox6.Text=s6;
        }

当你单击修改按键时代码改为：
//获取6列的文本，分别赋值给s1,s2,s3.....
EditForm f = new EditForm(s1,s2,.....,s6)

刚先入学，进来看看，新手，请大家多指教。

还是挺感谢的！我是这样写的，也可以
FORM1
        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                ListViewItem Item = listView1.SelectedItems[0];

                string simNo = Item.SubItems[0].Text;
                string startHoure = Item.SubItems[1].Text;
                string startMinute = Item.SubItems[2].Text;
                string endHoure = Item.SubItems[3].Text;
                string endMinute = Item.SubItems[4].Text;
                string retSpan = Item.SubItems[5].Text;

                FrmSimChange changesimno = new FrmSimChange();
                changesimno.CSimNo = simNo;
                changesimno.CStartHour = int.Parse(startHoure);
                changesimno.CStartMinute = int.Parse(startMinute);
                changesimno.CEndHour = int.Parse(endHoure);
                changesimno.CEndMinute = int.Parse(endMinute);
                changesimno.CRetSpan = int.Parse(retSpan);
                if (changesimno.ShowDialog() == DialogResult.OK)
                {
                    Item.SubItems[1].Text = changesimno.CStartHour.ToString();
                    Item.SubItems[2].Text = changesimno.CStartMinute.ToString();
                    Item.SubItems[3].Text = changesimno.CEndHour.ToString();
                    Item.SubItems[4].Text = changesimno.CEndMinute.ToString();
                    Item.SubItems[5].Text = changesimno.CRetSpan.ToString();
                }
            }
            catch
            {
                MessageBox.Show("请选择需要修改的号码");
                return;
            }
            finally
            {
            }
        }

FORM2
    public partial class FrmSimChange : Form
    {
        public FrmSimChange()
        {
            InitializeComponent();
        }

        private void FrmSimChange_Load(object sender, EventArgs e)
        {
        }

        public string CSimNo
        {
            get
            {
                return tBsnc.Text;
            }
            set
            {
                tBsnc.Text = value;
            }
        }
        public int CStartHour
        {
            get
            {
                return int.Parse(tBshc.Text);
            }
            set
            {
                tBshc.Text = Convert.ToString(value);
            }
        }
        public int CStartMinute
        {
            get
            {
                return int.Parse(tBsmc.Text);
            }
            set
            {
                tBsmc.Text = Convert.ToString(value);
            }
        }
        public int CEndHour
        {
            get
            {
                return int.Parse(tBehc.Text);
            }
            set
            {
                tBehc.Text = Convert.ToString(value);
            }
        }
        public int CEndMinute
        {
            get
            {
                return int.Parse(tBemc.Text);
            }
            set
            {
                tBemc.Text = Convert.ToString(value);
            }
        }
        public int CRetSpan
        {
            get
            {
                return int.Parse(tBrsc.Text);
            }
            set
            {
                tBrsc.Text = Convert.ToString(value);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.OK;
        }
    }