2016.1.22 利用LINQ实现DataSet内多张DataTable关联查询操作(目前未发现太大价值)

DataSet ds = new DataSet();

DataTable t1 = DBFactorySingleton.GetInstance().Factory.GetDataTable(sql_ndp).Copy();

t1.TableName = "t1";

DataTable t2 = DBFactorySingleton.GetInstance().Factory.GetDataTable(sql_naip).Copy();

t2.TableName = "t2";

ds.Tables.Add(t1);

ds.Tables.Add(t2);

var restable =

from f1 in ds.Tables[0].AsEnumerable()

from f2 in ds.Tables[1].AsEnumerable()

where f1.Field<string>("类型") + f1.Field<string>("名称") + f1.Field<string>("识别") == f2.Field<string>("类型") + f2.Field<string>("名称") + f2.Field<string>("识别")

//where f1.Field<string>("类型") + f1.Field<string>("名称")=="VOR_DME英德"

select new

{

c1 = f1.Field<string>("源"),

c2 = f1.Field<string>("类型"),

c3 = f1.Field<string>("名称"),

c4 = f1.Field<string>("识别"),

c5 = f1.Field<string>("磁差"),

c6 = f1.Field<string>("坐标"),

c7 = f1.Field<string>("频率"),

c8 = f1.Field<string>("波道"),

c9 = f1.Field<string>("天线高"),

c10 = f1.Field<string>("强制报告")

};

gdc_pmatch.DataSource = restable.ToArray();