c# - How to bind a list item to gridview -

i retrieving bunch of strings after doing comma separation. next want bind gridview. but, throws error:

a field or property name _barcodes not found on selected data source.

below code:

private void retrievescannedbarcodes() ////code retrieve barcodes     foreach (var item in scannedbarcodes)     {         _barcodes.addrange(item.split(','));         foreach (var b in _barcodes)         {             gvscannedbarcodes.datasource = b;             gvscannedbarcodes.databind();         }     } 

and gridview code:

<asp:gridview id="gvscannedbarcodes" runat="server" allowsorting="true"     autogeneratecolumns="false" pagersettings-mode="numericfirstlast" pagesize="25"     width="741px">     <columns>         <asp:boundfield datafield="_barcodes" headertext="barcodes" itemstyle-horizontalalign="center" headerstyle-width="50" />     </columns> </asp:gridview> 

any kind of appreciated. in advance.

a field or property name _barcodes not found on selected data source.

you binding string datasource gridview instead of collection datatable of list has column or property named _barcodes.

you have list scannedbarcodes contains comma separated bar codes strings , want barcodes list binded gridview. have bar codes scannedbarcodes in collection have _barcodes column.

you can use linq query bar codes using selectmany , select , put result anonymous object list having column name _barcodes this.

gvscannedbarcodes.datasource =  scannedbarcodes.selectmany(s=>s.split(',')                                 .select(b=>new {_barcodes = b})); gvscannedbarcodes.databind(); 

to make simple understand see following example.

list<string> list = new list<string>(new string []{"1,2,3","4,5,6"}); gvscannedbarcodes.datasource = list.selectmany(l=>l.split(',')                                .select(b=>new {_barcodes = b})); gvscannedbarcodes.databind();