小编use*_*866的帖子

我尝试使用以下代码来测试IndexedDB的性能.代码是从http://www.html5rocks.com/en/tutorials/indexeddb/todo/修改的,它适用于chrome,但在Firefox 10中失败,说"db.setVersion不是函数".我想知道如何修改代码以使其在Firefox中运行？

        var count=0;
        var MAX=10;
        var times=3;
        var allTime;
        var stime;
        var etime;

        var html5rocks = {};
        var indexedDB = window.indexedDB || window.webkitIndexedDB ||
                        window.mozIndexedDB;

        if ('webkitIndexedDB' in window) {
            window.IDBTransaction = window.webkitIDBTransaction;
            window.IDBKeyRange = window.webkitIDBKeyRange;
        }

        html5rocks.indexedDB = {};
        html5rocks.indexedDB.db = null;

        html5rocks.indexedDB.onerror = function(e) {
            //console.log(e);
            alert("Why didn't you allow my web app to use IndexedDB?!");  
        };

        html5rocks.indexedDB.open = function(type) {

        var request = indexedDB.open("todos");
            request.onsuccess = function(e) {
            var v = "1.20";
            html5rocks.indexedDB.db = …

我在我的程序中尝试了准备好的声明,但没有工作.

评论的部分是准备声明部分.当我将其改为正常陈述时,一切都是正确的.

有人能告诉我我错过了什么吗？

非常感谢.

private void btnLogin_Click(object sender, EventArgs e)
{
    MySqlCommand cmd = MySqlConn.cmd;
    //cmd = new MySqlCommand("SELECT * FROM admin WHERE admin_username='@val1' AND admin_password=PASSWORD('@val2')", MySqlConn.conn);
    //cmd.Prepare();
    //cmd.Parameters.AddWithValue("@val1", tboxUserName.Text);
    //cmd.Parameters.AddWithValue("@val2", tboxPassword.Text);
    cmd = new MySqlCommand("SELECT * FROM admin WHERE admin_username='"+tboxUserName.Text+"' AND admin_password=PASSWORD('"+tboxPassword.Text+"')", MySqlConn.conn);

    MySqlDataReader res = cmd.ExecuteReader();
    if (!res.HasRows) { MessageBox.Show("Error! "); res.Close(); return; }
    else
    {
        //do something
    }
    res.Close();
}