sql server - Visual basic express sql statements -


i'm programming software sql server 2014 , i'm stuck !

i'm trying use value list box insert sql query in order process query , result here code 

private sub button1_click(sender system.object, e system.eventargs) handles button1.click      if sql.hasconnection = true         sql.runquery(" select '" & listbox1.selecteditem.tostring() & " '  test ")         if sql.sqldataset.tables.count > 0             datagridview1.datasource = sql.sqldataset.tables(0)         end if     end if end sub

my issue displays surname on datagrid or firstname on datagrid when selected :/

i can't find problem please :/

i think if follows fix issue 

private sub button1_click(sender system.object, e system.eventargs) handles button1.click      if sql.hasconnection = true         sql.runquery(" select [" & listbox1.selecteditem.tostring() & "]  test ")         if sql.sqldataset.tables.count > 0             datagridview1.datasource = sql.sqldataset.tables(0)         end if     end if end sub

the passed named being treated literal string, adding square brackets enforce sql server treat object name(column name in case).


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