winfrom List<T>删除一条数据在绑定dataGridView出错

Question

 if (MessageBox.Show("是否要删除选中的数据？", "提示....",MessageBoxButtons.YesNo) == DialogResult.Yes)
            {
                try
                {
                    listwire.RemoveAt(this.dataGridView1.CurrentCell.RowIndex);
                    //MessageBox.Show("删除成功");
                    this.dataGridView1 = null;
                    this.dataGridView1.DataSource = listwire; //在这句代码报的错
                }
                catch (Exception ex)
                {
                    
                    throw;
                }
               
            }错误：未将对象引用设置到对象的实例。异常

Answer 1

this.dataGridView1 = null; 这句话有问题,应该是 this.dataGridView1.DataSource = null
this.dataGridView1.DataSource = listwire; //在这句代码报的错