c# - How to solve "Report item not linked to Dataset" error in RDLC? -

i using visual studio 2010 , have created rdlc report without using report wizard , added dataset when right click on textbox,choose expression , navigate datasets see dataset added report when click on fields shows "report item not linked dataset". not facing issue in vs 2008 , report works correctly in it. don't know how solve issue in vs2010. me regarding issue. have attached screenshot of issue below. please check it.

the code used display values in table given below know how display values in textboxes instead of table.

protected void page_load(object sender, eventargs e) {     localreport lr = null;     dataset ds = new dataset();     con.open();     sqlcommand cmd = new sqlcommand();     sqldataadapter da = new sqldataadapter("select catalogno catalogno, productname productname, quality_plan_ref_no qprefno,drawing_no drawingno,isr_no isrno,batchno batchno,allotted_qty allottedqty,convert(varchar(10),allotted_date,105) allotteddate batch_allott catalogno='0464' ", con);     da.fill(ds, "temp");     reportviewer1.localreport.datasources.clear();     reportviewer1.processingmode = processingmode.local;     lr = reportviewer1.localreport;     lr.reportpath = "report1.rdlc";     lr.datasources.add(new reportdatasource("dataset1_batch_allott", ds.tables[0])); } 

select tablix , right click on left top square. select tablix properties.

in tablix properties window make sure have dataset name selected.

i ran problem after deleted previous dataset , left blank. if don't see 1 in dropdown might need go view|report data , refresh it.