C#删除datagridview中选中的多行

private void button3_Click(object sender, EventArgs e)

{

int k = dataGridView1.SelectedRows.Count;

if (MessageBox.Show("您确认要删除这" + Convert.ToString(k) + "项吗？", "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)//给出提示

{

}

else

{

if (k != dataGridView1.Rows.Count - 2)//因为还有一行为统计行所以减2

{

for (int i = k; i >= 1; i--)//从下往上删，避免沙漏效应

{

dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[i - 1].Index);

}

}

else

{

dataGridView1.Rows.Clear();

}

}