datagrideview删除多行问题,急急急!

Question

     我在dgv_Inventory_RowPostPaint()事件里添加一列CheckBox来进行删除多行的操作.该如何实现呢?
       private void dgv_Inventory_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            
           
            if (dgv_Inventory.Columns["rowid"] == null)
            {
                DataGridViewCheckBoxColumn dgchk = new DataGridViewCheckBoxColumn();
                dgchk.Name = "rowid";
                dgchk.HeaderText = "选择";
                dgchk.Width = 40;
                dgv_Inventory.Columns.Insert(1, dgchk);
            }
        }

Answer 1

  private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < dataGridView1.Rows.Count; i++)
            {
                DataGridViewRow row = dataGridView1.Rows[i];
                if (Convert.ToBoolean(row.Cells["rowid"].Value))
                {
                    dataGridView1.Rows.Remove(row);
                    i--;
                }
            }
        }

Answer 2

添加一行模版列。CheckBox判断是否选中，再删除不就可以了

Answer 3

2楼这样写有点问题 ，如果开始没选中的话，值是null的，所以不能这样
应该判断 
if(row.Cells["rowid"].Value!=null && Convert.ToBoolean(row.Cells["rowid"].Value))
{
dataGridView1.Rows.Remove(row);
                    i--;
}

Answer 4

private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < dataGridView1.Rows.Count; i++)
            {
                DataGridViewRow row = dataGridView1.Rows[i];
                if (row.Cells["rowid"].Value==CheckState.Checked)
                {
                    dataGridView1.Rows.Remove(row);
                    i--;
                }
            }
        }

Answer 5

            for (int i = 0; i < dataGridView1.Rows.Count; i++) 
            { 
                if(dataGridView1.Rows[i].Cells["check列"].Value == null)
                {
                   continue;
                }
                if((bool)(dataGridView1.Rows[i].Cells["check列"].Value))
                {
                   //删除操作
                } 
            }