我正在尝试使用以下字符串连接来访问 2010 数据库。但是，它不会对数据库进行任何更改。
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.Oledb.12.0;Data Source=C:\\Program Files\\LogEntry\\LogEntry.accdb; Persist Security Info = False;");
conn.Open();
String text2send = "INSERT INTO TLC(Name,Department,Position,VisitDate,InTime,OutTime,Purpose,HelpedBy,Campus,HelpCode) VALUES(" + name + "," + department + "," + position + "," + date + "," + hourIn + "," + hourOut + "," + purpose + "," + helpedBy + "," + campus + "," + helpcode + ");";
OleDbCommand cmd = new OleDbCommand(text2send,conn);
conn.Close();
编辑：这是我用于参数查询的编辑代码。
String name = nameTextbox.Text;
String department = departmentCBox.Text;
String purpose = purposeTextbox.Text;
String position = positionCBox.Text;
String date = inDate.Value.ToString("MM/dd/yyyy");
String helpCode = helpCodeCBox.Text;
String hourOut = ""+OutHour.Text+":"+OutMin+" "+OutMeredian;
String helpedBy= "";
String campus= "";
String helpcode= "";
String hourIn = "" + DateTime.Now.ToString("hh") + ":" +
DateTime.Now.ToString("mm") + " " + DateTime.Now.ToString("tt");
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.Oledb.12.0;Data Source=C:\\Program Files\\LogEntry\\LogEntry.accdb; Persist Security Info = False;");
conn.Open();
String text2send = "Insert Into TLC([Name],[Department],[Position],[VisitDate],[InTime],[OutTime],[Purpose],[HelpedBy],[Campus],[HelpCode]) VALUE(?,?,?,?,?,?,?,?,?,?);";
OleDbCommand cmd = new OleDbCommand(text2send,conn);
cmd.Parameters.AddWithValue("Name", name);
cmd.Parameters.AddWithValue("Department", department);
cmd.Parameters.AddWithValue("Position", position);
cmd.Parameters.AddWithValue("Purpose", purpose);
cmd.Parameters.AddWithValue("HelpedBy", helpedBy);
cmd.Parameters.AddWithValue("Campus", campus);
cmd.Parameters.AddWithValue("HelpCode", helpcode);
cmd.ExecuteNonQuery();
conn.Close();