csharp using System; using System.Data; using System.Data.SqlClient; public class SQLHelper { // ... (连接字符串和GetConnection方法) public int ExecuteNonQuery(string sql, SqlParameter[] parameters = null) { using (SqlConnection conn = GetConnection()) { using (SqlCommand cmd = new SqlCommand...
<add name="Sql" connectionString="server=数据库地址;uid=⽤户名;pwd=密码;database=数据库名"/> </connectionStrings> 1.接着需要创建⼀个名为SqlHepler类，然后创建⼀个⽅法来获取app.config⽂件中配置的连接字符串。public static string GetSqlConnectionString(){ return ConfigurationManager.Connectio...
以下是一个简单的示例,展示了如何使用 SQLHelper 执行复杂查询: usingSystem;usingSystem.Data;usingSystem.Data.SqlClient;usingMySql.Data.MySqlClient;publicclassSQLHelper{privatestaticstringconnectionString ="your_connection_string";publicstaticDataTableExecuteComplexQuery(stringquery){using(SqlConnection connection ...
///public sealed class SqlHelperParameterCache { #region 私有方法,字段,构造函数 // 私有构造函数,妨止类被实例化. private SqlHelperParameterCache() {} // 这个方法要注意 private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable()); ////// 探索运行时的存储过程,返回SqlParameter参...
public class Produce { #region 增加单条记录 public static int ProductAdd(produce product) { StringBuilder strSql = new StringBuilder(); strSql.Append(" insert into dbo.produce ( CategoryID,produceName,producePrice,produceStock,produceDescription)"); ...
public class SQLHelper { private string m_SqlConnectionString = ""; private SqlConnection conn = null; public SQLHelper(string sqlConnectionString) { m_SqlConnectionString = sqlConnectionString; if (!TestSqlConnection()) throw new Exception("数据库连接失败"); ...
一,微软SQLHelper.cs类 中文版: 1usingSystem;2usingSystem.Data;3usingSystem.Xml;4usingSystem.Data.SqlClient;5usingSystem.Collections;67namespaceClassbao.Data8{9///10///SqlServer数据访问帮助类11///12publicsealedpartialclassSqlHelper13{14#region私有构造函数和方法1516privateSqlHelper() { }1718///19/...
publicSQLHelper(){try{// 注册 JDBC 驱动Class.forName("com.mysql.cj.jdbc.Driver");// 连接到数据库this.connection=DriverManager.getConnection(url,user,password);}catch(ClassNotFoundExceptione){e.printStackTrace();// 打印错误信息}catch(SQLExceptione){e.printStackTrace();// 打印连接失败信息}} ...
public class SQLHelper // 超时时间 private static int Timeout = 1000; // 数据库名称 public const String BestNet = "BestNet"; //存储过程名称 public const String UserInfoCURD = "UserInfoCURD"; // 数据库连接字符串 private static Dictionary<String, String> ConnStrs = new Dictionary<String, ...
c.CPattern=newPattern() { PatternId=byte.Parse(dr["PatternId"].ToString()), PatternName=dr["PatternName"].ToString() }; c.CClass=newClass() { ClassId=byte.Parse(dr["ClassId"].ToString()), ClassName=dr["ClassName"].ToString() }; ...