for (int i = 0; i < dataGridView2.Columns.Count; i++)
dataGridView2.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
**加粗文字**
for (int i = 0; i < dataGridView2.Columns.Count; i++)
dataGridView2.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
**加粗文字**