试试这个：

Try this:

private void InsertNewRowToDGV()
  {
   //we have to get the index of a last row id:
   int index = this.dataGridView1.Rows.Count;

   //and count +1 to get a new row id:
   index++;
   this.dataGridView1.Rows.Add();
}

参考更多详情：

http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.rowsadded.aspx [ ^ ]

http://msdn.microsoft.com/en-us/library/5s3ce6k8 .aspx [ ^ ]

请在下面给出此代码

将空白行添加到数据网格视图中

Please this code given bellow
to add blank row into the data grid view

DataGridView.Rows.Add()

。

.

Or Can you use this coding also

Suppose I have a DataGridView having three columns named ItemName,Itemcode and ItemQuantity
for that you can use following code given bellow

DataGridView.Rows.Add("ItemName","ItemCode","Quantity",)