Devexpress Xtrareport 创建主从报表

 效果

　　

xtrareport 布局

　　

From 代码

　　

    private DataSet Getdata()
        {
            DataSet ds = new DataSet();
            //config配置字符串
            string constr=ConfigurationManager.ConnectionStrings["constr"].ToString();
            SqlConnection mycon = new SqlConnection(constr);
            try
            {
                mycon.Open();

                //表1
                SqlCommand mycom = new SqlCommand("select * from dp ", mycon);
                SqlDataAdapter dpt = new SqlDataAdapter(mycom);
                dpt.Fill(ds, "dp");

                //表2
                SqlCommand mycom2 = new SqlCommand("select * from duser ", mycon);
                dpt = new SqlDataAdapter(mycom2);
                dpt.Fill(ds, "duser");
                mycon.Close();

                //创建主外键
                DataColumn parent = ds.Tables["dp"].Columns["dpid"];
                DataColumn child = ds.Tables["duser"].Columns["dpid"];

                //添加关系并指定为RelationColumn
                DataRelation rel = new DataRelation("RelationColumn", parent, child);
                ds.Relations.Add(rel);
                


            }
            catch (Exception ex)
            {

                MessageBox.Show(ex.Message);
            }

            return ds;
        
        }
    
        private void simpleButton1_Click(object sender, EventArgs e)
        {
            DataSet ds=Getdata();
            XtraReport1 report = new XtraReport1(ds);
            report.Landscape = true;
            documentViewer1.DocumentSource = report;
            report.CreateDocument();
        }
    }    

Xtrareport 代码

　　

      public XtraReport1(DataSet ds)
        {
            InitializeComponent();
            //绑定主表
            this.DataSource = ds;
            this.DataMember = "dp";
            this.xrTableCell1.DataBindings.Add("Text", ds, "dp.dpname");
            //指定从表成员
            DetailReport.DataMember = "RelationColumn"; 
            //绑定从表
            DetailReport.DataSource = ds;
            this.xrTableCell2.DataBindings.Add("Text", ds, "RelationColumn.userid");
            this.xrTableCell3.DataBindings.Add("Text", ds, "RelationColumn.username");


        }

注意事项

　　dataset数据集中绑定了两个表，一定要看清楚有没有填充进去，没有填充的话，从表不会显示数据的