private void button2_Click(object sender, EventArgs e)
{
DataTable dataTable = new DataTable();
for (int i = 0; i < dataGridView8.Rows.Count; i++)
{
dataTable.Rows.Add();
}
for (int i = 0; i < dataGridView8.Columns.Count; i++)
{
dataTable.Columns.Add();
}
for (int i = 0; i < dataGridView8.Rows.Count; i++)
{
for (int j = 0; j < dataGridView8.Columns.Count; j++)
{
dataTable.Rows[i][j] = dataGridView8.Rows[i].Cells[j].Value;
}
}
MySqlOperations.Print_Uspevaemost(dateTimePicker2, ID_Uchenika, saveFileDialog1, dataTable);
}
