dataGridView动态添加行，新行排名第一行

      DataGridViewRow row = new DataGridViewRow();
            DataGridViewTextBoxCell textboxcell = new DataGridViewTextBoxCell();
            textboxcell.Value = C.time;
              row.Cells.Add(textboxcell);
              DataGridViewTextBoxCell textboxcel2= new DataGridViewTextBoxCell();
              textboxcell.Value = C.temperature;
              row.Cells.Add(textboxcel2);
                 
              
                      dataGridView1.Rows.Insert(1, row);//这句代码保存提供的行索引超出范围。
参数名: rowIndex

[解决办法]

dataGridView1.Rows.Insert(0, row);

[解决办法]
//要加这两句，添加列
this.dataGridView1.Columns.Add("1", "1");//两个参数，前者为列名，后者为headertext
this.dataGridView1.Columns.Add("2", "2");

DataGridViewRow row = new DataGridViewRow();

DataGridViewTextBoxCell textboxcell = new DataGridViewTextBoxCell();
textboxcell.Value = 1;
row.Cells.Add(textboxcell);

DataGridViewTextBoxCell textboxcel2 = new DataGridViewTextBoxCell();
textboxcel2.Value = 2;//这里是2,是1的话，就覆盖了
row.Cells.Add(textboxcel2);


dataGridView1.Rows.Insert(0, row);//这里是0，索引从0开始。