c# 连接access 更新数据

public static void FriendInfoUpdate(FriendInfo info)
{

    string connStr = "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=|DataDirectory|data.mdb";
    string SQLcmd = "update FriendInfo set Age='" + info.Age + "' Height='" + info.Height + "' Weight='" + info.Weight + "' Money='" + info.Money + "' where ID='" +info.ID + "';"; ;
    OleDbConnection conn = new OleDbConnection(connStr);
    conn.Open();
    OleDbCommand OleCmd = new OleDbCommand(SQLcmd, conn);     //执行SQL命令

    conn.Close();


}

多个字段应该是 update 表(字段1, 字段2, ...) values(值1, 值2, ...) where ...

而且你没有执行，要加上 OleCmd.ExecuteNoQuery()才执行。

string SQLcmd = "update FriendInfo set Age='" + info.Age + "，' Height='" + info.Height + "，' Weight='" + info.Weight + "，' Money='" + info.Money + "' where ID='" +info.ID + "';"; ;
OleCmd.ExecuteNoQuery()

没有执行语句：
OleCmd.ExecuteNoQuery()