DevExpress gridview 主从表

 DataSet ds = new DataSet(); 

string SQLCompany = "select * from job_company";

 string SQLjob = "select  * from job_job ";

  ds.Tables.Add(DbHelperSQL.GetValueDataTable(SQLCompany, "company"));

 ds.Tables.Add(DbHelperSQL.GetValueDataTable(SQLjob, "job_job"));

ds.Relations.Add("job", ds.Tables["company"].Columns["comid"], ds.Tables["job_job"].Columns["comid"], false);

关键的一行代码

this.gridControl1.DataSource = ds.Tables["company"];