odbc连接数据库
using System;
using System.Collections.Generic;
using System.Text;
using Console = System.Console;
using Microsoft.Data.Odbc;
using System.Data;
using System.Data.SqlClient;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
try
{
connSqlserver();
}
catch (OdbcException MyOdbcException)
{
for (int i = 0; i < MyOdbcException.Errors.Count; i++)
{
Console.Write("ERROR #" + i + "\n" +
"Message: " + MyOdbcException.Errors[i].Message + "\n" +
"Native: " + MyOdbcException.Errors[i].NativeError.ToString() + "\n" +
"Source: " + MyOdbcException.Errors[i].Source + "\n" +
"SQL: " + MyOdbcException.Errors[i].SQLState + "\n");
}
}
Console.ReadLine();
}
public void ceshi()
{
try
{
string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +
"SERVER=localhost;" +
"DATABASE=jy;" +
"UID=root;" +
"PASSWORD=123;" +
"OPTION=3;CharSet=gb2312;";
OdbcConnection MyConnection = new OdbcConnection(MyConString);
MyConnection.Open();
Console.WriteLine("\n !!! success, connected successfully !!!\n");
//Create a sample table
OdbcCommand MyCommand = new OdbcCommand("DROP TABLE IF EXISTS my_odbc_net", MyConnection);
MyCommand.ExecuteNonQuery();
MyCommand.CommandText = "CREATE TABLE my_odbc_net(id int, name varchar(20), idb bigint)";
MyCommand.ExecuteNonQuery();
//Insert
MyCommand.CommandText = "INSERT INTO my_odbc_net VALUES(10,'" + filter("中国,''") + "', 300)";
Console.WriteLine("INSERT, Total rows affected:" + MyCommand.ExecuteNonQuery()); ;
//Insert
MyCommand.CommandText = "INSERT INTO my_odbc_net VALUES(20,'mysql',400)";
Console.WriteLine("INSERT, Total rows affected:" + MyCommand.ExecuteNonQuery());
//Insert
MyCommand.CommandText = "INSERT INTO my_odbc_net VALUES(20,'mysql',500)";
Console.WriteLine("INSERT, Total rows affected:" + MyCommand.ExecuteNonQuery());
//Update
MyCommand.CommandText = "UPDATE my_odbc_net SET id=999 WHERE id=20";
Console.WriteLine("Update, Total rows affected:" + MyCommand.ExecuteNonQuery());
//COUNT(*)
MyCommand.CommandText = "SELECT COUNT(*) as TRows FROM my_odbc_net";
Console.WriteLine("Total Rows:" + MyCommand.ExecuteScalar());
//Fetch
MyCommand.CommandText = "SELECT * FROM my_odbc_net";
OdbcDataReader MyDataReader;
MyDataReader = MyCommand.ExecuteReader();
while (MyDataReader.Read())
{
if (string.Compare(MyConnection.Driver, "myodbc3.dll") == 0)
{
Console.WriteLine("Data:" + MyDataReader.GetInt32(0) + " " +
MyDataReader.GetString(1) + " " +
MyDataReader.GetInt64(2)); //Supported only by Connector/ODBC 3.51
}
else
{
Console.WriteLine("Data:" + MyDataReader.GetInt32(0) + " " +
MyDataReader.GetString(1) + " " +
MyDataReader.GetInt32(2)); //BIGINTs not supported by Connector/ODBC
}
}
//Close all resources
MyDataReader.Close();
MyConnection.Close();
}
catch (OdbcException MyOdbcException)//Catch any ODBC exception ..
{
for (int i = 0; i < MyOdbcException.Errors.Count; i++)
{
Console.Write("ERROR #" + i + "\n" +
"Message: " + MyOdbcException.Errors[i].Message + "\n" +
"Native: " + MyOdbcException.Errors[i].NativeError.ToString() + "\n" +
"Source: " + MyOdbcException.Errors[i].Source + "\n" +
"SQL: " + MyOdbcException.Errors[i].SQLState + "\n");
}
}
}
public static void connSqlserver()
{
string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +
"SERVER=localhost;" +
"DATABASE=zs;" +
"UID=root;" +
"PASSWORD=123;" +
"OPTION=3;CharSet=gb2312;";
OdbcConnection MyConnection = new OdbcConnection(MyConString);
MyConnection.Open();
OdbcCommand MyCommand = new OdbcCommand("DROP TABLE IF EXISTS my_odbc_net", MyConnection);
MyCommand.ExecuteNonQuery();
//使用轻量级的SqlDataReader显示数据
//指定Sql Server提供者的连接字符串
string connString = "Data Source=PC-200908231053\\SQLEXPRESS;database=occupationNew;User id=sa;PWD=123";
//建立连接对象
SqlConnection Sqlconn = new SqlConnection(connString);
//打开连接
Sqlconn.Open();
string thisCommand = "select * from Article where ID >"+ 1243931905062 +"order by ID";
//创建SqlDataAdapter对象,有两个参数，一个是查询字符串，一个是连接对象
SqlDataAdapter SqlDap = new SqlDataAdapter(thisCommand, Sqlconn);
//创建DataSet对象
DataSet thisDataset = new DataSet();
//使用SqlDataAdapter的Fill方法填充DataSet，有两个参数，一个是创建的DataSet实例，一个是填入的表
SqlDap.Fill(thisDataset, "informations");
//显示查询结果
foreach (DataRow theRow in thisDataset.Tables["informations"].Rows)
{
//Console.WriteLine(theRow["InformationId"] + "\t" + theRow["companyName"]);
//MyCommand.CommandText = "INSERT INTO information(companyname,course,major,number,sex,pay,request,informationsource,datetime,job,workprovinci,detailplace,isbin,enddate,existcourse,academymajororder) "
// + "VALUES('" + filter(theRow["CompanyName"]) + "','" + filter(theRow["Course"]) + "','" + filter(theRow["Major"]) + "','" + filter(theRow["Number"]) + "','" + filter(theRow["Sex"]) + "','" + filter(theRow["Pay"]) + "','" + filter(theRow["request"]) + "','" + filter(theRow["informationSource"]) + "','" + filter(theRow["DateTime"]) + "','" + filter(theRow["Job"]) + "','" + filter(theRow["WorkProvince"]) + "','" + filter(theRow["DetailPlace"]) + "','" + filter(theRow["IsBin"]) + "','" + filter(theRow["EndDate"]) + "','" + filter(theRow["ExistCourse"]) + "','" + filter(theRow["AcademyMajorOrder"]) + "')";
Console.WriteLine(theRow["ID"] + "\t" + theRow["Title"]);
MyCommand.CommandText = "INSERT INTO downloads(title,fenlei,content,lint,updatetime,click) "
+ "VALUES('" + filter(theRow["Title"]) + "','" + filter(theRow["CategoryID"]) + "','" + filter(theRow["Content"]) + "','" + filter(theRow["Author"]) + "','" + filter(theRow["DateTime"]) + "','" + filter(theRow["Hits"]) + "')";
//Console.WriteLine(theRow["ID"] + "\t" + theRow["Title"]);
//MyCommand.CommandText = "INSERT INTO xinwens(title,fenlei,content,username,updatetime,click) "
// + "VALUES('" + filter(theRow["Title"]) + "','" + "" + "','" + filter(theRow["Content"]) + "','" + filter("大学生就业指导中心") + "','" + filter(theRow["DateTime"]) + "','" + 0 + "')";
Console.WriteLine("INSERT, Total rows affected:" + MyCommand.ExecuteNonQuery());
}
Sqlconn.Close();
Console.ReadLine();
}
public static string filter(object text)
{
System.Text.Encoding GB2312 = System.Text.Encoding.GetEncoding("GB2312");
System.Text.Encoding UTF8 = System.Text.Encoding.UTF8;
byte[] data = GB2312.GetBytes(text.ToString());
string msg = GB2312.GetString(data);
return msg.Replace(",", "，").Replace("'", "’").Replace("―", "-");
}
}
}