592 lines
21 KiB
C#
592 lines
21 KiB
C#
using System;
|
||
using System.Collections.Generic;
|
||
using System.Data;
|
||
using System.Data.SqlClient;
|
||
using System.Collections;
|
||
|
||
namespace Transmission.SDK
|
||
{
|
||
public class SQLDBHelper
|
||
{
|
||
#region 构造函数
|
||
public SQLDBHelper()
|
||
{
|
||
|
||
}
|
||
|
||
public SQLDBHelper(string SQLDBConnStr)
|
||
{
|
||
connstring = SQLDBConnStr;
|
||
}
|
||
|
||
public SQLDBHelper(string Server, string Port, string Name, string UserName, string UserPwd)
|
||
{
|
||
//传入对应的 服务器名称 实例名 用户名 密码
|
||
connstring = string.Format("server={0},{1};database={2};uid={3};pwd={4};Connect Timeout=3;", Server, Port, Name, UserName, UserPwd);
|
||
}
|
||
|
||
#endregion
|
||
|
||
public void SQLDBHelperConfig(string Server, string Port, string Name, string UserName, string UserPwd)
|
||
{
|
||
//传入对应的 服务器名称 实例名 用户名 密码
|
||
connstring = string.Format("server={0},{1};database={2};uid={3};pwd={4};Connect Timeout=3;", Server, Port, Name, UserName, UserPwd);
|
||
}
|
||
|
||
#region 属性信息
|
||
private string connstring = null;
|
||
public string sqldbconnstring
|
||
{
|
||
set
|
||
{
|
||
connstring = value;
|
||
}
|
||
get
|
||
{
|
||
return connstring;
|
||
}
|
||
}
|
||
#endregion
|
||
|
||
#region 公用方法
|
||
/// <summary>
|
||
/// 获取最大值加一
|
||
/// </summary>
|
||
/// <param name="FieldName">字段名</param>
|
||
/// <param name="TableName">表名</param>
|
||
/// <returns></returns>
|
||
public int GetMaxID(string FieldName, string TableName)
|
||
{
|
||
string strsql = "select max(" + FieldName + ")+1 from " + TableName;
|
||
object obj = GetSingle(strsql);
|
||
if (obj == null)
|
||
{
|
||
return 1;
|
||
}
|
||
else
|
||
{
|
||
return int.Parse(obj.ToString());
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 测试连接
|
||
/// </summary>
|
||
public void TestConn()
|
||
{
|
||
//测试连接
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
using (SqlCommand cmd = new SqlCommand())
|
||
{
|
||
try
|
||
{
|
||
connection.Open();
|
||
}
|
||
catch (System.Data.SqlClient.SqlException E)
|
||
{
|
||
throw new Exception(E.Message);
|
||
}
|
||
finally
|
||
{
|
||
connection.Close();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
#endregion
|
||
|
||
#region 执行SQL语句
|
||
/// <summary>
|
||
/// 执行SQL语句，返回影响的记录数
|
||
/// </summary>
|
||
/// <param name="SQLString">SQL语句</param>
|
||
/// <returns>影响的记录数</returns>
|
||
public void ExecuteSql(string SQLString)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
|
||
{
|
||
SqlTransaction tx = connection.BeginTransaction();
|
||
cmd.Transaction = tx;
|
||
try
|
||
{
|
||
connection.Open();
|
||
cmd.ExecuteNonQuery();
|
||
tx.Commit();
|
||
}
|
||
catch (System.Data.SqlClient.SqlException E)
|
||
{
|
||
connection.Close();
|
||
tx.Rollback();
|
||
throw new Exception(E.Message);
|
||
}
|
||
finally
|
||
{
|
||
connection.Close();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行带参SQL语句，返回影响的记录数
|
||
/// </summary>
|
||
/// <param name="SQLString">SQL语句</param>
|
||
/// <returns>影响的记录数</returns>
|
||
public void ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
using (SqlCommand cmd = new SqlCommand())
|
||
{
|
||
SqlTransaction tx = connection.BeginTransaction();
|
||
cmd.Transaction = tx;
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
cmd.ExecuteNonQuery();
|
||
cmd.Parameters.Clear();
|
||
tx.Commit();
|
||
}
|
||
catch (System.Data.SqlClient.SqlException E)
|
||
{
|
||
tx.Rollback();
|
||
throw new Exception(E.Message);
|
||
}
|
||
finally
|
||
{
|
||
connection.Close();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行多条SQL语句，实现数据库事务。
|
||
/// </summary>
|
||
/// <param name="SQLStringList">多条SQL语句</param>
|
||
public void ExecuteSqlTran(List<string> SQLStringList)
|
||
{
|
||
using (SqlConnection conn = new SqlConnection(connstring))
|
||
{
|
||
conn.Open();
|
||
SqlCommand cmd = new SqlCommand();
|
||
cmd.Connection = conn;
|
||
SqlTransaction tx = conn.BeginTransaction();
|
||
cmd.Transaction = tx;
|
||
try
|
||
{
|
||
for (int n = 0; n < SQLStringList.Count; n++)
|
||
{
|
||
string strsql = SQLStringList[n].ToString();
|
||
if (strsql.Trim().Length > 1)
|
||
{
|
||
cmd.CommandText = strsql;
|
||
cmd.ExecuteNonQuery();
|
||
}
|
||
}
|
||
tx.Commit();
|
||
}
|
||
catch (System.Data.SqlClient.SqlException E)
|
||
{
|
||
tx.Rollback();
|
||
throw new Exception(E.Message);
|
||
}
|
||
finally
|
||
{
|
||
conn.Close();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行查询语句，返回DataSet
|
||
/// </summary>
|
||
/// <param name="SQLString">查询语句</param>
|
||
/// <returns>DataSet</returns>
|
||
public DataSet QuerySql(string SQLString)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
connection.Open();
|
||
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
|
||
command.Fill(ds, "ds");
|
||
connection.Close();
|
||
}
|
||
catch (System.Data.SqlClient.SqlException ex)
|
||
{
|
||
throw new Exception(ex.Message);
|
||
}
|
||
finally
|
||
{
|
||
connection.Close();
|
||
}
|
||
return ds;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行带参查询语句，返回DataSet
|
||
/// </summary>
|
||
/// <param name="SQLString">查询语句</param>
|
||
/// <returns>DataSet</returns>
|
||
public DataSet QuerySql(string SQLString, params SqlParameter[] cmdParms)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
SqlCommand cmd = new SqlCommand();
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
da.Fill(ds, "ds");
|
||
cmd.Parameters.Clear();
|
||
connection.Close();
|
||
}
|
||
catch (System.Data.SqlClient.SqlException ex)
|
||
{
|
||
throw new Exception(ex.Message);
|
||
}
|
||
return ds;
|
||
}
|
||
}
|
||
}
|
||
|
||
private void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
|
||
{
|
||
if (conn.State != ConnectionState.Open)
|
||
conn.Open();
|
||
cmd.Connection = conn;
|
||
cmd.CommandText = cmdText;
|
||
if (trans != null)
|
||
cmd.Transaction = trans;
|
||
cmd.CommandType = CommandType.Text;//cmdType;
|
||
if (cmdParms != null)
|
||
{
|
||
foreach (SqlParameter parm in cmdParms)
|
||
cmd.Parameters.Add(parm);
|
||
}
|
||
}
|
||
#endregion
|
||
|
||
#region 执行简单SQL语句
|
||
/// <summary>
|
||
/// 执行带一个存储过程参数的的SQL语句。
|
||
/// </summary>
|
||
/// <param name="SQLString">SQL语句</param>
|
||
/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
|
||
/// <returns>影响的记录数</returns>
|
||
public int ExecuteSql(string SQLString, string content)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
SqlCommand cmd = new SqlCommand(SQLString, connection);
|
||
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
|
||
myParameter.Value = content;
|
||
cmd.Parameters.Add(myParameter);
|
||
try
|
||
{
|
||
connection.Open();
|
||
int rows = cmd.ExecuteNonQuery();
|
||
return rows;
|
||
}
|
||
catch (System.Data.SqlClient.SqlException E)
|
||
{
|
||
throw new Exception(E.Message);
|
||
}
|
||
finally
|
||
{
|
||
cmd.Dispose();
|
||
connection.Close();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
|
||
/// </summary>
|
||
/// <param name="strSQL">SQL语句</param>
|
||
/// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
|
||
/// <returns>影响的记录数</returns>
|
||
public int ExecuteSqlInsertImg(string strSQL, byte[] fs)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
SqlCommand cmd = new SqlCommand(strSQL, connection);
|
||
System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Image);
|
||
myParameter.Value = fs;
|
||
cmd.Parameters.Add(myParameter);
|
||
try
|
||
{
|
||
connection.Open();
|
||
int rows = cmd.ExecuteNonQuery();
|
||
return rows;
|
||
}
|
||
catch (System.Data.SqlClient.SqlException E)
|
||
{
|
||
throw new Exception(E.Message);
|
||
}
|
||
finally
|
||
{
|
||
cmd.Dispose();
|
||
connection.Close();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
||
/// </summary>
|
||
/// <param name="SQLString">计算查询结果语句</param>
|
||
/// <returns>查询结果（object）</returns>
|
||
public object GetSingle(string SQLString)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
|
||
{
|
||
try
|
||
{
|
||
connection.Open();
|
||
object obj = cmd.ExecuteScalar();
|
||
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
||
{
|
||
return null;
|
||
}
|
||
else
|
||
{
|
||
return obj;
|
||
}
|
||
}
|
||
catch (System.Data.SqlClient.SqlException e)
|
||
{
|
||
connection.Close();
|
||
throw new Exception(e.Message);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行查询语句，返回SqlDataReader
|
||
/// </summary>
|
||
/// <param name="strSQL">查询语句</param>
|
||
/// <returns>SqlDataReader</returns>
|
||
public SqlDataReader ExecuteReader(string strSQL)
|
||
{
|
||
SqlConnection connection = new SqlConnection(connstring);
|
||
SqlCommand cmd = new SqlCommand(strSQL, connection);
|
||
try
|
||
{
|
||
connection.Open();
|
||
SqlDataReader myReader = cmd.ExecuteReader();
|
||
return myReader;
|
||
}
|
||
catch (System.Data.SqlClient.SqlException e)
|
||
{
|
||
throw new Exception(e.Message);
|
||
}
|
||
|
||
}
|
||
#endregion
|
||
|
||
#region 执行带参数的SQL语句
|
||
|
||
/// <summary>
|
||
/// 执行多条SQL语句，实现数据库事务。
|
||
/// </summary>
|
||
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
|
||
public void ExecuteSqlTran(Hashtable SQLStringList)
|
||
{
|
||
using (SqlConnection conn = new SqlConnection(connstring))
|
||
{
|
||
conn.Open();
|
||
using (SqlTransaction trans = conn.BeginTransaction())
|
||
{
|
||
SqlCommand cmd = new SqlCommand();
|
||
try
|
||
{
|
||
//循环
|
||
foreach (DictionaryEntry myDE in SQLStringList)
|
||
{
|
||
string cmdText = myDE.Key.ToString();
|
||
SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
|
||
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
||
int val = cmd.ExecuteNonQuery();
|
||
cmd.Parameters.Clear();
|
||
|
||
trans.Commit();
|
||
}
|
||
}
|
||
catch
|
||
{
|
||
trans.Rollback();
|
||
throw;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
||
/// </summary>
|
||
/// <param name="SQLString">计算查询结果语句</param>
|
||
/// <returns>查询结果（object）</returns>
|
||
public object GetSingle(string SQLString, params SqlParameter[] cmdParms)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
using (SqlCommand cmd = new SqlCommand())
|
||
{
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
object obj = cmd.ExecuteScalar();
|
||
cmd.Parameters.Clear();
|
||
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
||
{
|
||
return null;
|
||
}
|
||
else
|
||
{
|
||
return obj;
|
||
}
|
||
}
|
||
catch (System.Data.SqlClient.SqlException e)
|
||
{
|
||
throw new Exception(e.Message);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行查询语句，返回SqlDataReader
|
||
/// </summary>
|
||
/// <param name="strSQL">查询语句</param>
|
||
/// <returns>SqlDataReader</returns>
|
||
public SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
|
||
{
|
||
SqlConnection connection = new SqlConnection(connstring);
|
||
SqlCommand cmd = new SqlCommand();
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
SqlDataReader myReader = cmd.ExecuteReader();
|
||
cmd.Parameters.Clear();
|
||
return myReader;
|
||
}
|
||
catch (System.Data.SqlClient.SqlException e)
|
||
{
|
||
throw new Exception(e.Message);
|
||
}
|
||
|
||
}
|
||
#endregion
|
||
|
||
#region 存储过程操作
|
||
|
||
/// <summary>
|
||
/// 执行存储过程
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <returns>SqlDataReader</returns>
|
||
public SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
|
||
{
|
||
SqlConnection connection = new SqlConnection(connstring);
|
||
SqlDataReader returnReader;
|
||
connection.Open();
|
||
SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
|
||
command.CommandType = CommandType.StoredProcedure;
|
||
returnReader = command.ExecuteReader();
|
||
return returnReader;
|
||
}
|
||
|
||
|
||
/// <summary>
|
||
/// 执行存储过程
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <param name="tableName">DataSet结果中的表名</param>
|
||
/// <returns>DataSet</returns>
|
||
public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
DataSet dataSet = new DataSet();
|
||
connection.Open();
|
||
SqlDataAdapter sqlDA = new SqlDataAdapter();
|
||
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
|
||
sqlDA.Fill(dataSet, tableName);
|
||
connection.Close();
|
||
return dataSet;
|
||
}
|
||
}
|
||
|
||
|
||
/// <summary>
|
||
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
|
||
/// </summary>
|
||
/// <param name="connection">数据库连接</param>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <returns>SqlCommand</returns>
|
||
private SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
|
||
{
|
||
SqlCommand command = new SqlCommand(storedProcName, connection);
|
||
command.CommandType = CommandType.StoredProcedure;
|
||
foreach (SqlParameter parameter in parameters)
|
||
{
|
||
command.Parameters.Add(parameter);
|
||
}
|
||
return command;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行存储过程，返回影响的行数
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <param name="rowsAffected">影响的行数</param>
|
||
/// <returns></returns>
|
||
public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
|
||
{
|
||
using (SqlConnection connection = new SqlConnection(connstring))
|
||
{
|
||
int result;
|
||
connection.Open();
|
||
SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
|
||
rowsAffected = command.ExecuteNonQuery();
|
||
result = (int)command.Parameters["ReturnValue"].Value;
|
||
//Connection.Close();
|
||
return result;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建 SqlCommand 对象实例(用来返回一个整数值)
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <returns>SqlCommand 对象实例</returns>
|
||
private SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
|
||
{
|
||
SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
|
||
command.Parameters.Add(new SqlParameter("ReturnValue",
|
||
SqlDbType.Int, 4, ParameterDirection.ReturnValue,
|
||
false, 0, 0, string.Empty, DataRowVersion.Default, null));
|
||
return command;
|
||
}
|
||
#endregion
|
||
}
|
||
}
|