dataGridView1.DataSource = dtn.DefaultView; //设置其视图
dataGridView1.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells; //设置宽度dataGridView1.DataSource = dtn.DefaultView; //设置其视图
dataGridView1.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells; //设置宽度