fast db 学习

见 http://code.google.com/p/mmdbsolution/source/browse/trunk/+mmdbsolution+--username+SiliangDu1987%40gmail.com/DBTest/DBTest/Default.aspx.cs?spec=svn206&r=206

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using FdbDataProvider;

namespace DBTest
{
    public partial class _Default : System.Web.UI.Page
    {
        Random r;
        SqlConnection sqlConn;
        FdbConnection fdbConn;
        //SqlCommand sqlCmd;
        //FdbCommand fdbCmd;
        static int maxIndex = 0;

        protected void Page_Load(object sender, EventArgs e)
        {
            r = new Random();
            sqlConn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|"
                + @"\SqlServerDB.mdf;Integrated Security=True;User Instance=True");
            //sqlConn = new SqlConnection(@"Data Source=SILEAS-PC\SQLFORFASTDB;initial catalog=test;uid=sa;pwd=ss1022");
            fdbConn = new FdbConnection(@"DataSource=test.fdb",
                    FdbConnection.DefaultInitDatabaseSize * 2,
                    FdbConnection.DefaultInitIndexSize * 2,
                    FdbConnection.DefaultExtensionQuantum * 2);
            //SqlDataSource1.SelectCommand = "SELECT * FROM test";
            //SqlDataSource1.Select(new DataSourceSelectArguments());
            //maxIndex = ListView1.Items.Count;

            if (TbxInsert.Text == "")
            {
                try
                {
                    sqlConn.Open();
                    fdbConn.Open();

                    SqlCommand sqlCmd = sqlConn.CreateCommand();
                    sqlCmd.CommandText = "delete from persons";

                    FdbCommand fdbCmd = fdbConn.CreateCommand();
                    fdbCmd.CommandText = "delete from persons"; //where salary>=0";

                    sqlCmd.ExecuteNonQuery();

                    fdbCmd.ExecuteNonQuery();

                    maxIndex = 0;
                }
                catch (Exception ex)
                {
                    LblError.Text = ex.Message;
                }
                finally
                {
                    if (sqlConn.State == ConnectionState.Open)
                        sqlConn.Close();
                    if (fdbConn.State == ConnectionState.Open)
                        fdbConn.Close();
                }
            }
            else
            {
                //maxIndex = Convert.ToInt32(TbxInsert.Text);
            }
        }

        protected void BtnSelect_Click(object sender, EventArgs e)
        {
            try
            {
                int loopCount = Convert.ToInt32(TbxCount.Text);
                int randName;
                DateTime startTime, endTime;
                TimeSpan d;

                sqlConn.Open();
                LbxSelect.Items.Clear();
                LbxDes.Items.Clear();

                startTime = DateTime.Now;
                for (int i = 0; i < loopCount; ++i)
                {
                    randName = r.Next(0, maxIndex);
                    SqlCommand sqlCmd = sqlConn.CreateCommand();
                    //SqlDataSource1.SelectCommand = "SELECT * FROM test WHERE name=" + randName.ToString();
                    //SqlDataSource1.Select(new DataSourceSelectArguments());
                    sqlCmd.CommandText = "SELECT * FROM persons WHERE name=" + randName.ToString();

                    //sqlCmd.ExecuteNonQuery();
                    //LbxSelect.Items.Add(i.ToString());

                    SqlDataReader reader = sqlCmd.ExecuteReader();

                    while (reader.Read())
                    {
                        LbxSelect.Items.Add(reader["name"].ToString());
                        //LbxDes.Items.Add(reader["address"].ToString());
                    }
                    reader.Close();
                }
                endTime = DateTime.Now;
                d = endTime - startTime;
                LblTime.Text = d.Seconds.ToString() + "秒" + d.Milliseconds.ToString() + "毫秒";
                LblError.Text = "SQL Server select successfully!";
            }
            catch (Exception ex)
            {
                if (TbxCount.Text == "")
                    LblError.Text = "请输入查询次数！";
                else
                    LblError.Text = ex.Message;
            }
            finally
            {
              sqlConn.Close();
            }
        }

        protected void BtnInsert_Click(object sender, EventArgs e)
        {
            try
            {

                int count = Convert.ToInt32(TbxInsert.Text), n = 0;
                DateTime startTime, endTime;
                TimeSpan d;
                SqlCommand sqlCmd = sqlConn.CreateCommand();
                sqlConn.Open();

                startTime = DateTime.Now;
                for (int i = 0; i < count; ++i)
                {
                    //SqlCommand sqlCmd = sqlConn.CreateCommand();
                    sqlCmd.CommandText = "insert into persons(name,salary,address) "
                            + "values(" + i.ToString() + "," + i.ToString() + ",'" + TbxDes.Text + "')";

                    //sqlCmd.CommandText = @"insert into persons(name,salary,address) "
                    //        + @"values(@name,@salary,@address)";
                    ////if (i == 0)
                    ////{
                    //    sqlCmd.Parameters.Add("name", SqlDbType.Int);
                    //    sqlCmd.Parameters.Add("salary", SqlDbType.Real);
                    //    sqlCmd.Parameters.Add("address", SqlDbType.NChar);
                    ////}

                    //sqlCmd.Parameters["name"].Value = i;
                    //sqlCmd.Parameters["salary"].Value = i;
                    //sqlCmd.Parameters["address"].Value = "'"+TbxDes.Text+"'";

                    n += sqlCmd.ExecuteNonQuery();
                    //SqlDataSource1.InsertCommand = "INSERT INTO test(name, salary, description) "
                    //        + "VALUES (" + i.ToString() + ", " + i.ToString() + ", '" + TbxDes.Text + "')";
                    //SqlDataSource1.Insert();
                }
                endTime = DateTime.Now;
                d = endTime - startTime;
                LblTime.Text = d.Seconds.ToString() + "秒" + d.Milliseconds.ToString() + "毫秒";
                maxIndex = Convert.ToInt32(TbxInsert.Text);

                LblError.Text = "SQL Server Insert " + n.ToString() + " records successfully!";
                //maxIndex += count;
            }
            catch (Exception ex)
            {
                LblError.Text = ex.Message;
            }
            finally
            {
                sqlConn.Close();
            }
        }

        protected void BtnClr_Click(object sender, EventArgs e)
        {
            try
            {
                sqlConn.Open();
                SqlCommand sqlCmd = new SqlCommand("DELETE from persons", sqlConn);
                int n = sqlCmd.ExecuteNonQuery();
                //SqlDataSource1.DeleteCommand = "DELETE from test";
                //SqlDataSource1.Delete();
                LblError.Text = "SQL Server Clear " + n.ToString() + " records  successfully!";

                //maxIndex = 0;
            }
            catch (Exception ex)
            {
                LblError.Text = ex.Message;
            }
            finally
            {
                sqlConn.Close();
            }
        }

        //public void FdbCreateTable(FdbConnection connection, FdbCommand command, string name, string[] attr, string[] attrType)
        //{
        //    try
        //    {
        //        for (int i = 0; i < attr.Length; ++i)
        //        {
        //            CLI.FieldType type;

        //            switch (attr[i])
        //            {
        //                case "int": type = CLI.FieldType.cli_int8; break;
        //                case "real": type = CLI.FieldType.cli_real8; break;
        //                case "string": type = CLI.FieldType.cli_asciiz; break;
        //            }
        //            command.Fields.Add(attr[i], type);
        //        }
        //        if (connection.CreateTable(name, command.Fields) >= 0)
        //            throw new Exception("Cannot create table in FastDB");
        //    }
        //    catch (Exception ex)
        //    {
        //        LblError.Text = ex.Message;
        //    }
        //}

        protected void BtnInsertFdb_Click(object sender, EventArgs e)
        {
            try
            {
                int count = Convert.ToInt32(TbxInsert.Text), n = 0;
                DateTime startTime, endTime;
                TimeSpan d;
                FdbCommand fdbCmd = fdbConn.CreateCommand();
                fdbConn.Open();

                startTime = DateTime.Now;
                for (int i = 1; i <= count; ++i)
                {
                    //FdbCommand fdbCmd = fdbConn.CreateCommand();
                    //fdbCmd.CommandText = @"insert into persons(name,salary,address) "
                    //        + @"values(%name,%salary,%address)";
                    ////if (i == 0)
                    ////{
                    //fdbCmd.Parameters.Add("name", CLI.FieldType.cli_int8, CLI.FieldFlags.cli_indexed);
                    //fdbCmd.Parameters.Add("salary", CLI.FieldType.cli_int8);
                    //fdbCmd.Parameters.Add("address", CLI.FieldType.cli_asciiz);
                    ////}

                    //fdbCmd.Parameters["name"].asInt64 = i;
                    //fdbCmd.Parameters["salary"].asInt64 = i;
                    //fdbCmd.Parameters["address"].asString = TbxDes.Text;

                    fdbCmd.CommandText = "Insert into persons(name,salary,address) "
                            + "values(" + i.ToString() + "," + i.ToString() + ",'" + TbxDes.Text + "')";

                    n += fdbCmd.ExecuteNonQuery();
                }
                endTime = DateTime.Now;
                d = endTime - startTime;
                LblTimeFdb.Text = d.Seconds.ToString() + "秒" + d.Milliseconds.ToString() + "毫秒";
                maxIndex = Convert.ToInt32(TbxInsert.Text);

                LblError.Text = "FastDB Insert " + n.ToString() + " records successfully!";
                //maxIndex += count;
            }
            catch (Exception ex)
            {
                LblError.Text = ex.Message;
            }
            finally
            {
                fdbConn.Close();
            }
        }

        protected void BtnSelectFdb_Click(object sender, EventArgs e)
        {
            try
            {
                int loopCount = Convert.ToInt32(TbxCount.Text);
                int randName;
                DateTime startTime, endTime;
                TimeSpan d;

                LbxSelectFdb.Items.Clear();
                LbxDesFdb.Items.Clear();
                fdbConn.Open();

                startTime = DateTime.Now;
                for (int i = 0; i < loopCount; ++i)
                {
                    randName = r.Next(0, maxIndex);
                    //SqlDataSource1.SelectCommand = "SELECT * FROM test WHERE name=" + randName.ToString();
                    //SqlDataSource1.Select(new DataSourceSelectArguments());
                    //LbxSelectFdb.Items.Add(randName.ToString());
                    //LbxDesFdb.Items.Add(TbxDes.Text);
                    FdbCommand fdbCmd = fdbConn.CreateCommand();
                    fdbCmd.CommandText = "select * from persons where name=" + randName.ToString();

                    //fdbCmd.ExecuteNonQuery();
                    //LbxSelectFdb.Items.Add(i.ToString());

                    FdbDataReader reader = fdbCmd.ExecuteReader();
                    while (reader.Read())
                    {
                        LbxSelectFdb.Items.Add(reader["name"].ToString());
                        //LbxDesFdb.Items.Add(reader["address"].ToString());
                    }
                    reader.Close();
                }
                endTime = DateTime.Now;
                d = endTime - startTime;
                LblTimeFdb.Text = d.Seconds.ToString() + "秒" + d.Milliseconds.ToString() + "毫秒";
                LblError.Text = "FastDB Select successfully!";
            }
            catch (Exception ex)
            {
                if (TbxCount.Text == "")
                    LblError.Text = "请输入查询次数！";
                else
                    LblError.Text = ex.Message;
            }
            finally
            {
                fdbConn.Close();
            }
        }

        protected void BtnClrFdb_Click(object sender, EventArgs e)
        {
            try
            {
                FdbCommand fdbCmd = fdbConn.CreateCommand();
                fdbCmd.CommandText = "delete from persons where salary >= 0";
                fdbConn.Open();

                int n = fdbCmd.ExecuteNonQuery();
                //SqlDataSource1.DeleteCommand = "DELETE from test";
                //SqlDataSource1.Delete();
                LblError.Text = "FastDB clear " + n.ToString() + " records successfully!";

                //maxIndex = 0;
            }
            catch (Exception ex)
            {
                LblError.Text = ex.Message;
            }
            finally
            {
                fdbConn.Close();
            }
        }

    }
}