发布于 2016-12-10 06:25:14 | 110 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
sql="select * from newss where username=? order by id"
//注意查询的条件均用?号表示
OleDbConnection conn = new OleDbConnection(connString);
OleDbCommand cmd = new OleDbCommand(sql,conn);
OleDbParameter parm = new OleDbParameter("temp",OleDbType.VarChar, 50);
//temp为Parameter对象可随便定义,OleDbType.VarChar指定为字符串,长度50
parm.Direction = ParameterDirection.Input;
//指定其类型输入参数
cmd.Parameters.Add(parm);
cmd.Parameters["temp"].Value = "tsing";
//查询tsing,也可以写成cmd.Parameters[0]
conn.Open();
cmd.ExecuteReader();
set conn = Server.CreateObject("Adodb.Connection")
conn.ConnectionString = connString
conn.open()
set mycmd = Server.CreateObject("ADODB.Command")
mycmd.ActiveConnection=conn
mycmd.CommandText=sql
mycmd.Prepared = true
set mypar = mycmd.CreateParameter("temp",129,1,50,"tsing")
mycmd.Parameters.Append mypar
set myrs = mycmd.Execute
'---- ParameterDirectionEnum Values ----
Const adParamUnknown = 0
Const adParamInput = 1
Const adParamOutput = 2
Const adParamInputOutput = 3
Const adParamReturnValue = 4
'---- DataTypeEnum Values ----
Const adEmpty = 0
Const adTinyInt = 16
Const adSmallInt = 2
Const adInteger = 3
Const adBigInt = 20
Const adUnsignedTinyInt = 17
Const adUnsignedSmallInt = 18
Const adUnsignedInt = 19
Const adUnsignedBigInt = 21
Const adSingle = 4
Const adDouble = 5
Const adCurrency = 6
Const adDecimal = 14
Const adNumeric = 131
Const adBoolean = 11
Const adError = 10
Const adUserDefined = 132
Const adVariant = 12
Const adIDispatch = 9
Const adIUnknown = 13
Const adGUID = 72
Const adDate = 7
Const adDBDate = 133
Const adDBTime = 134
Const adDBTimeStamp = 135
Const adBSTR = 8
Const adChar = 129
Const adVarChar = 200
Const adLongVarChar = 201
Const adWChar = 130
Const adVarWChar = 202
Const adLongVarWChar = 203
Const adBinary = 128
Const adVarBinary = 204
Const adLongVarBinary = 205
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Data.OleDb;
namespace acc_select
{
/// <summary>
/// accselect 的摘要说明
/// </summary>
public class accselect
{
//"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=d:\dq\db1.mdb"
private string conn = ConfigurationManager.ConnectionStrings["tsingConnectionString"].ToString();
public string sql = string.Empty;
public int t = 4;
public object v = null;
public accselect()
{
}
/// <summary>
/// 构造函数，传递ACC参数查询语句
/// </summary>
/// <param name="strsql">strsql字符型</param>
public accselect(string strsql)
{
sql = strsql;
}
/// <summary>
/// 构造函数，传递ACC参数查询语句
/// </summary>
/// <param name="strsql">参数查询语句</param>
/// <param name="total">字节数</param>
public accselect(string strsql, int total)
{
sql = strsql;
t = total;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="strsql">参数查询语句</param>
/// <param name="total">字节数</param>
/// <param name="value">OBJECT值</param>
public accselect(string strsql, int total, object value)
{
sql = strsql;
t = total;
v = value;
}
/// <summary>
/// getOdd方法返回OleDbDataReader
/// </summary>
/// <param name="odt">定义OleDbType类型</param>
/// <returns></returns>
public OleDbDataReader getOdd(OleDbType odt)
{
OleDbConnection conns = new OleDbConnection(this.conn);
OleDbCommand cmd = new OleDbCommand(this.sql, conns);
OleDbParameter parm = new OleDbParameter("temp", odt, this.t);
parm.Direction = ParameterDirection.Input;
cmd.Parameters.Add(parm);
cmd.Parameters[0].Value = this.v;
conns.Open();
OleDbDataReader oda = cmd.ExecuteReader();
cmd.Dispose();
return oda;
}
string Sql
{
get
{
return sql;
}
set
{
sql = value;
}
}
int T
{
get
{
return t;
}
set
{
t = value;
}
}
object V
{
get
{
return v;
}
set
{
v = value;
}
}
}
}
//调用方法
//accselect acc = new accselect();
//acc.sql = "select * from dtt where d_id=?";
//acc.t = 10;
//acc.v = 1;
//OleDbDataReader oda = acc.getOdd(OleDbType.VarChar);
//Repeater1.DataSource = oda;
//Repeater1.DataBind();
function acc_sql(sql,adotype,adodct,strlong,values)
dim connstring,mycmd,myrs,conn
connString="Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & Server.MapPath("db1.mdb")
set conn = Server.CreateObject("Adodb.Connection")
conn.ConnectionString = connString
conn.open()
set mycmd = Server.CreateObject("ADODB.Command")
mycmd.ActiveConnection=conn
mycmd.CommandText=sql
mycmd.Prepared = true
set mypar = mycmd.CreateParameter("temp",adotype,adodct,strlong,values)
mycmd.Parameters.Append mypar
set myrs = mycmd.Execute
set acc_sql=myrs
end function
'调用方法
'dim rs
'sql="select * from users where id=? order by id"
'set rs=acc_sql(sql,3,1,4,1)
'if not rs.eof then
'response.Write(rs(1))
'end if