GridControl主从表设置

注：GridControl中包含了GridView 添加GridControl1

连接数据库：

string souce ="server=(local);Integrated Security=SSPI;database=dx";

SqlConnection conn =new SqlConnection(souce);

conn.Open();

string str ="select * from base_color";

string str2 ="select * from base_detail";

string str3 ="select * from base_three";

SqlDataAdapter da =new SqlDataAdapter(str, con);

SqlDataAdapter da2 =new SqlDataAdapter(str2, con);

SqlDataAdapter da3 =new SqlDataAdapter(str3, con);

DataSet ds =new DataSet();

a.Fill(ds, "color");

da2.Fill(ds, "detail");

da3.Fill(ds, "three");

DataRelation dr = new DataRelation("2层", ds.Tables["color"].Columns["id"],ds.Tables["detail"].Columns["color_no"]);

//设定关系，ds.color(表). Id（字段）= ds.detail. color_no

DataRelation dr2 = new DataRelation("3层", ds.Tables["color"].Columns["id"],ds.Tables["three"].Columns["color_no"]);

DataRelation dr3 = new DataRelation("4层", ds.Tables["detail"].Columns["id"],ds.Tables["three"].Columns["color_no"]);

ds.Relations.Add(dr);

ds.Relations.Add(dr2);

ds.Relations.Add(dr3);

gridControl1.DataSource = ds.Tables[0];//设定主表