数据集行号（仅带填充行）

Question

如果我使用ds.Tables[0].Rows.Count ，则无论行中是否有数据，我都会得到行数，我不想对空，空白或null的行进行计数，是否有任何办法它实际上没有逐行阅读吗？

Answer 1

yes- DataTable implements the IEnumerable interface, which means that you can use LINQ to query it:
ds.Tables[0].Count(row => !string.IsNullOrEmpty(row["Name"]) /*etc..*/);
(if you don't already know linq- you should familiarize yourself . it's great.)

Answer 2

if you manage to isolate the rows you want with a filter you can use any of these approaches:

DataView myView = new DataVie(ds.Tables[0]);

myView.RowFilter = "NAME IS NOT NULL";

int count = myView.Count;

or also with Select...

DataRow[] myRows = ds.Tables[0].Select("NAME IS NOT NULL");

int count = myRows.Length;

then in the first case you can iterate on the DataView and in the second case you iterate on the DataRow array. For binding to UI Controls DataView is probably better.