c# - Asp.net GridView search with Entity Framework -

i error:

data source invalid type. must either ilistsource, ienumerable, or idatasource.

my code:

protected void button1_click(object sender, eventargs e) {         jobshopentities job = new jobshopentities();         gridview1.datasource = (from x in job.jobdescriptions (x.titlu == textbox1.text) select x).first();         gridview1.databind(); } 

i searched lot solution.. here got solution.

rest of code on end in case have error.

 protected void gridview1_rowediting(object sender, gridviewediteventargs e)  {         gridviewrow row = gridview1.rows[e.neweditindex];          int rowid = convert.toint32(row.cells[1].text);          response.redirect("~/administrator/management/managejobs.aspx?id=" + rowid);  } 

you bind grid object first give object instead of collection whereas datasource expect collection. if not need bind gridview single record can remove call of first method , call tolist() list of records.

if need first record can use enumerable.take return ienumerable<tsource>

 gridview1.datasource = (from x in job.jobdescriptions      (x.titlu == textbox1.text) select x).take(1); 

edit per comments op

if bind record should know know many record have in table. if record in thousand can think paging.

if record in hundreds can use same method using query without clause in page_load event.

if(!page.ispostback) {      jobshopentities job = new jobshopentities();      gridview1.datasource = (from x in job.jobdescriptions).tolist();      gridview1.databind(); }