datagridview提示重复 怎么让光标跳回到重复的单元格 并且不修改进入下一单元格 仍会跳回

 foreach (DataGridViewRow v in dataGridView1.Rows)  //判断第一列是否重复
            {
                if (v.Cells[0].Value != null)
                {
                    var count = 0;
                    foreach (DataGridViewRow v2 in dataGridView1.Rows)
                    {
                        if (v2.Cells[0].Value != null)
                        {
                            if (v.Cells[0].Value.ToString().Equals(v2.Cells[0].Value.ToString()))
                                count++;
                        }
                    }
                    if (count > 1)
                    {
                        MessageBox.Show("第1列有重复，重复的内容是:【" + v.Cells[0].Value + "】");

                        return;
                    }
                }
            }

            foreach (DataGridViewRow v in dataGridView1.Rows)  //判断第一列是否重复
            {
                if (v.Cells[0].Value != null)
                {
                    var count = 0;
                    DataGridViewRow dgvr = null;//////////
                    foreach (DataGridViewRow v2 in dataGridView1.Rows)
                    {
                        if (v2.Cells[0].Value != null && v != v2)
                        {
                            if (v.Cells[0].Value.ToString().Equals(v2.Cells[0].Value.ToString()))
                            {
                                count++;
                                dgvr = v2.Cells[0];
                                break;
                            }
                        }
                    }
                    if (count > 1)
                    {
                        MessageBox.Show("第1列有重复，重复的内容是:【" + v.Cells[0].Value + "】");
                        System.Timers.Timer t = new System.Timers.Timer(100);
                        t.Elapsed += (tsender, te) =>
                        {
                            t.Dispose();
                            this.Invoke(new setState(() =>
                            {

                                dataGridView1.CurrentCell = dgvr;///////////////////
                                dataGridView1.BeginEdit(true);
                            }));
                        };
                        t.Enabled = true;
                        return;
                    }
                }
            }

https://ask.csdn.net/questions/692072#answer_566032
参考这个，设置CurrentCell，重新BeginEdit

        private delegate void setState();///什么一个委托


            foreach (DataGridViewRow v in dataGridView1.Rows)  //判断第一列是否重复
            {
                if (v.Cells[0].Value != null)
                {
                    var count = 0;
                    foreach (DataGridViewRow v2 in dataGridView1.Rows)
                    {
                        if (v2.Cells[0].Value != null)
                        {
                            if (v.Cells[0].Value.ToString().Equals(v2.Cells[0].Value.ToString()))
                                count++;
                        }
                    }
                    if (count > 1)
                    {
                        MessageBox.Show("第1列有重复，重复的内容是:【" + v.Cells[0].Value + "】");
                        System.Timers.Timer t = new System.Timers.Timer(100);
                        t.Elapsed += (tsender, te) =>
                        {
                            t.Dispose();
                            this.Invoke(new setState(() =>
                            {

                                dataGridView1.CurrentCell = v.Cells[0];//////
                                dataGridView1.BeginEdit(true);
                            }));
                        };
                        t.Enabled = true;
                        return;
                    }
                }
            }