两种方法，代码如下：

        void initDataGridView(){Stopwatch sw = new Stopwatch();//Stopwatch提供一组方法和属性，可用于准确地测量运行时间sw.Start();//方法一：一行一行增加到datagridview中for (int i = 0; i < 10000; i++){int RowIndex = dataGridView1.Rows.Add();dataGridView1.Rows[RowIndex].Cells[ColumnIndex.Name].Value = (i + 1).ToString();dataGridView1.Rows[RowIndex].Cells[ColumnName.Name].Value = "Name" + (i + 1).ToString();dataGridView1.Rows[RowIndex].Cells[ColumnJobNumber.Name].Value = "JobNumber" + (i + 1).ToString();dataGridView1.Rows[RowIndex].Cells[ColumnSex.Name].Value = "Man";dataGridView1.Rows[RowIndex].Cells[ColumnRemark.Name].Value = "Remark" + (i + 1).ToString();}     sw.Stop();TimeSpan dts = sw.Elapsed;//获取当前实例测量得出的总运行时间Console.WriteLine("function1 use time:{0}", dts);sw.Restart();//方法二：先定义一个DataGridViewRow队列，然后赋值，然后一次性添加所有行到datagridview中DataGridViewRow[] dtRows = new DataGridViewRow[10000];for (int i = 0; i < 10000; i++){dtRows[i] = new DataGridViewRow();dtRows[i].CreateCells(dataGridView2);dtRows[i].Cells[0].Value = (i + 1).ToString();dtRows[i].Cells[1].Value = "Name" + (i + 1).ToString();dtRows[i].Cells[2].Value = "JobNumber" + (i + 1).ToString();dtRows[i].Cells[3].Value = "Man";dtRows[i].Cells[4].Value = "Remark" + (i + 1).ToString();}dataGridView2.Rows.AddRange(dtRows);sw.Stop();dts = sw.Elapsed;//获取当前实例测量得出的总运行时间Console.WriteLine("function2 use time:{0}", dts);}

执行之后的耗时对比结果如下：

function1 use time:00:00:06.8457473
function2 use time:00:00:00.7253520