c# - Edit single item in database via textbox - 


private void button1_click(object sender, eventargs e) {  using (sqlconnection connection =  new sqlconnection(connectionstring) {  connection.open();  sqlcommand cmd = new sqlcommand("update dictionary set word=@word", connection);          cmd.parameters.addwithvalue("@word", wordtextbox.text);         cmd.executenonquery();         this.close();     } }

i created way take selected value in listbox , add item text box on seperate form. there attempting give user way change word , have reflected in dataset created. when change word replaces every entry in dataset new word opposed specific entry. trying figure how specify change 1 item.

that because missing where clause in query. need use where clause in query update selected records :

eg : update dictionary set word=@word id=@id.

this example. have put clause per requirement.

hope helps.


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