USE MASTER 
GO
--檢索SQLTMP數(shù)據(jù)庫(kù)是否存在
IF EXISTS(SELECT * FROM SYSDATABASES WHERE name = 'SQLTMP')
--刪除SQLTMP數(shù)據(jù)庫(kù)
DROP DATABASE SQLTMP
GO
--創(chuàng)建數(shù)據(jù)庫(kù)
CREATE DATABASE SQLTMP
GO
--使用SQLTMP數(shù)據(jù)庫(kù)
USE SQLTMP
GO
-------------創(chuàng)建一張表用來驗(yàn)證SQL注入漏洞----------------
--檢索表是否存在
IF EXISTS(SELECT * FROM SYSOBJECTS WHERE name = 'admin')
--刪除表
DROP TABLE admin
GO
--創(chuàng)建表
CREATE TABLE admin
(
id INT PRIMARY KEY IDENTITY(1,1),--設(shè)置主鍵
name VARCHAR(20) NOT NULL,--用戶名
pass VARCHAR(20) NOT NULL--密碼
)
-------------插入一條測(cè)試數(shù)據(jù)---------------------------
INSERT INTO admin VALUES('admin','admin')
--查詢插入數(shù)據(jù)
SELECT * FROM admin

<font size="3" color="#ff00ff">using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using System.Data.SqlClient;
namespace SQLTmp
{
class Program
{
//數(shù)據(jù)庫(kù)連接字符串
public static String strCon = "Data Source=.;Initial Catalog=SQLTMP;Integrated Security=True";
//創(chuàng)建數(shù)據(jù)庫(kù)連接對(duì)象
static SqlConnection SqlCon = new SqlConnection(strCon);
static void Main(string[] args)
{
Console.WriteLine("請(qǐng)輸入用戶名:");
String name = Console.ReadLine();
Console.WriteLine("請(qǐng)輸入密碼:");
String pass = Console.ReadLine();
try
{
Program p = new Program();
//打開數(shù)據(jù)庫(kù)連接
p.Open();
string sql = "SELECT COUNT(*) FROM admin WHERE name = '"+name+"'AND pass = '"+pass+"'";
SqlCommand sqlcom = new SqlCommand(sql, SqlCon);
int i = (int)sqlcom.ExecuteScalar();
if (i > 0)
{
Console.WriteLine("登錄成功！");
}
else
{
Console.WriteLine("登錄失敗!");
}
Console.ReadLine();
}
catch (Exception)
{
throw;
}
finally {
//關(guān)閉數(shù)據(jù)庫(kù)連接
pass.Clone();
}
}
//打開數(shù)據(jù)庫(kù)連接
public void Open()
{
//關(guān)閉狀態(tài)下打開數(shù)據(jù)庫(kù)連接
if (SqlCon.State == ConnectionState.Closed)
{
SqlCon.Open();
}
//中斷情況下打開數(shù)據(jù)庫(kù)連接
if (SqlCon.State == ConnectionState.Broken)
{
//關(guān)閉
SqlCon.Close();
SqlCon.Open();
}
}
//關(guān)閉數(shù)據(jù)庫(kù)連接
public void Close() {
if (SqlCon.State == ConnectionState.Open || SqlCon.State == ConnectionState.Broken)
{
SqlCon.Close();
}
}
}
}
</font>

<font size="3" color="#ff00ff">SELECT COUNT(*) FROM SQLTMP WHERE name = 'admin' AND pass = 'admin'
SELECT COUNT(*) FROM SQLTMP WHERE name = '' or 1=1 -- ' AND pass = '123'
</font>

<font size="3" color="#ff00ff"> string sql = "SELECT COUNT(*) FROM admin WHERE name = '"+name+"'AND pass = '"+pass+"'";
</font>

<font size="3" color="#ff00ff">SELECT COUNT(*) FROM SQLTMP WHERE name = '' or 1=1</font>

<font size="3" color="#ff00ff">string sql = "SELECT COUNT(*) FROM admin WHERE name = [url=home.php?mod=space&uid=116087]@name[/url] AND pass = @pass "; 
//創(chuàng)建SParameter[]
SqlParameter[] para = {
new SqlParameter("@name",name),
new SqlParameter("@pass",pass)
};
SqlCommand sqlcom = new SqlCommand(sql, SqlCon);
//通過Parameters.addRange方法將para[]放進(jìn)去
sqlcom.Parameters.AddRange(para);
int i = (int)sqlcom.ExecuteScalar();
</font>

<font size="3" color="#ff00ff">CREATE PROC Login (@name VARCHAR(20) ,@pass VARCHAR(20))
AS
SELECT COUNT(*) FROM admin WHERE name =@name AND pass = @pass
GO
</font>

<font size="3" color="#ff00ff">SqlParameter[] para = {
new SqlParameter("@name",name),
new SqlParameter("@pass",pass)
};
SqlCommand sqlcom = new SqlCommand();
sqlcom.Connection = SqlCon;
sqlcom.CommandText = "Login";
//指定執(zhí)行類型為存儲(chǔ)過程
sqlcom.CommandType = CommandType.StoredProcedure;
sqlcom.Parameters.AddRange(para);
int i = (int)sqlcom.ExecuteScalar();
</font>