dataGridView1.Columns[0].Width = dataGridView1.Columns[0].GetPreferredWidth(DataGridViewAutoSizeColumnMode.ColumnHeader ,false );
dataGridView1.Columns[0].Width = dataGridView1.Columns[0].GetPreferredWidth(DataGridViewAutoSizeColumnMode.ColumnHeader ,false );
dataGridView1.ColumnHeadersDefaultCellStyle.WrapMode = System.Windows.Forms.DataGridViewTriState.False;//字体不向下溢出
dataGridView.ColumnHeadersHeight =30;//固定列头高度