C# 在dataGridView中行首或行尾手动添加记录、修改一行记录（1.行尾添加，非数据库连接形式 2.修改某一行的数据 3.插入行首，不覆盖行首）

DataGridViewRow row = new DataGridViewRow();
row.CreateCells(dataGridView1);
row.Cells[0].Value = 23;
row.Cells[1].Value = 45;
this.dataGridView1.Rows.Add(row);

int iRowIndex = n;
this.dataGridView1["Column1", iRowIndex].Value = "1";
this.dataGridView1["Column2", iRowIndex].Value = "张三";
this.dataGridView1["Column3", iRowIndex].Value = "软件部";

DataGridViewRow row = new DataGridViewRow();
row.CreateCells(dataGridView1);
row.Cells[0].Value = "hh";
row.Cells[1].Value = "yy";
this.dataGridView1.Rows.Insert(0, row);