https://www.cnblogs.com/sufei/archive/2010/01/12/1645763.html
var result = ((DataTable) (this.ComShop.DataSource)).AsEnumerable()
.Where(f1 => f1["Name"].ToString().Trim() == rcomdgv1.Rows[e.RowIndex].Cells["shopName"].Value.ToString().Trim()).FirstOrDefault();
string ddd= result["Name"].ToString();