sql server - Stored Procedure Where Parameter SqlDbType -

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i have combobox , textbox. use combobox value @criteria , texbox value @value when execute there no data showed up. analyzing problem within :

    select * table @criteria '%'+@value+'%'

from tested, data showed if value part of @criteria string. if @criteria 'name' data showed if @value 'n' or 'a' or 'm' or 'e'

how can make works?

openconn()     cmd.commandtype = commandtype.storedprocedure     cmd.commandtext = "find"     cmd.parameters.clear()     cmd.parameters.add("@criteria", sqldbtype.varchar).value = cmbcriteria.text     cmd.parameters.add("@value", sqldbtype.varchar).value = txtvalue.text     dr = cmd.executereader     listview1.items.clear()     while dr.read         dim lv listviewitem         lv = listview1.items.add(dr("no"))         lv.subitems.add(dr("name"))         lv.subitems.add(dr("address"))     loop closeconn()

i think maybe expecting "@criteria" database field name. parameters in ado.net (and in modern methods of database access) refer data values , can never used database field names.


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