提升 dataGridView 效率，让万笔数据绑定 datatable (dataGridView 中快速导入 datatable)

代码中输入

dataGridView1.RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.DisableResizing;

dataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.DisplayedCells;

dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.DisplayedCells;

DataGridViewTextBoxColumn idColumn = new DataGridViewTextBoxColumn();

idColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.None;

dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;

dataGridView1.DataSource = dt;  //dt 是查询结果后的数据源

千万不要设定

dataGridView1.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);