private void button2_Click(object sender, EventArgs e)
{
foreach (DataGridViewRow row in dataGridView1.SelectedRows)
{
dataGridView1.Rows.Remove(row);
if (typebook == "Учебная литература")
{
book.Remove(book.ElementAt(dataGridView1.CurrentRow.Index).Key);
}
if (typebook == "Журналы")
{
jorgazet.Remove(jorgazet.ElementAt(dataGridView1.CurrentRow.Index).Key);
}
}
}
