如何为datagrid增加一个空行

如果是于DATASET连接，直接添加到DATASET中

datarow.add....

http://www.Codefund.cn/Develop/read_article.asp?id=27280

SqlConnection myConnection = new SqlConnection(ConnectionString);
SqlDataAdapter myCommand = new SqlDataAdapter(SelectCommand, myConnection);

DataSet ds = new DataSet();
myCommand.Fill(ds);

// add a new blank row to the end of the data
object[] rowValues = { "", "", "" };
ds.Tables[0].Rows.Add(rowValues);

// figure out the EditItemIndex, last record on last page
int recordCount = ds.Tables[0].Rows.Count;
if (recordCount > 1)
recordCount--;
dgUserInfo.CurrentPageIndex = recordCount/dgUserInfo.PageSize;
dgUserInfo.EditItemIndex = recordCount%dgUserInfo.PageSize;

// databind
dgUserInfo.DataSource = ds;
dgUserInfo.DataBind();