小编Hel*_*cie的帖子

我正在尝试检查表中的记录是否已存在.

我怎么能这样做？

我已经写了以下代码:

string dbName = "Data Source=searchindex.db";
SQLiteConnection con = new SQLiteConnection(dbName);
con.Open();
SQLiteCommand cmd = new SQLiteCommand(con);

// If this sql request return false
cmd.CommandText = "SELECT rowid FROM wordlist WHERE word='word'"; 
cmd.ExecuteNonQuery();

// then add record in table
cmd.CommandText = "INSERT INTO wordlist(word) VALUES ('word')";