c# datatable增加列并赋值

DataView dv = DataObj.GetBmfzr("03").Tables[0].DefaultView;

dv.Sort = "bmbh";

DataTable dt = ds.Tables[0];

dt.Columns.Add("bkzz",typeof(string));

foreach (DataRow rs in dt.Rows)

{

string fzr = "";

DataRowView[] drv = dv.FindRows(new object[] { rs["bzh"].ToString() });

if (drv.Length > 0)

{

for (int n = 0; n <= drv.Length - 1; n++)

{

fzr += fzr == "" ? drv[n]["xm"].ToString() : "," + drv[n]["xm"].ToString();

}

}

rs["bkzz"] = fzr;

}