How to delete multiple rows in datagridview and database using vb.net window forms -

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i have data gridview loads these codes:

    mycom.connection = cn     mycom.commandtext = <sql> select username,activity,cdate `date` tbl_activity </sql>.value      dim myadap new mysqldataadapter(mycom)     dim mydt new datatable      grdactivity.columns.add(colcb)     myadap.fill(mydt)     grdactivity.datasource = mydt     myadap.dispose()

and have delete button these codes:

dim selected integer     selected = grdactivity.selectedrows.count     if grdactivity.selectedrows.count > 0         'you may want add confirmation message, , if user confirms delete         integer = 0 selected             myr.close()             mycom.connection = cn             mycom.commandtext = "delete tbl_activity id = '" & & "' "             mycom.executereader()             myr.close()         next     else         messagebox.show("select 1 row before hit delete")     end if

can me right codes can delete databases bounded rows not in datagridview directly database.. thanks..

don't dispose of dataadapter, can use update database. if configure myadap appropriate insert, update , delete commands button click code becomes nothing more error handling and:

myadapt.update(mydt)

don't read data out of grid, let grid manipulate data bound , dataadapter handle rest. have complete example (for ms sql server) here


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