数据库访问类
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- using System;
- using System.Collections;
- using System.Collections.Specialized;
- using System.Data;
- using System.Data.SqlClient;
- using System.Configuration;
-
- namespace RedGlove.DBUtility
- {
- public class SqlServerHelper
- {
-
- public static string connectionString = ConfigurationManager.AppSettings["SQLString"];
-
- public SqlServerHelper() { }
-
- #region 公用方法
-
- public static 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());
- }
- }
-
- public static bool Exists(string strSql)
- {
- object obj = GetSingle(strSql);
- int cmdresult;
- if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
- {
- cmdresult = 0;
- }
- else
- {
- cmdresult = int.Parse(obj.ToString());
- }
- if (cmdresult == 0)
- {
- return false;
- }
- else
- {
- return true;
- }
- }
-
- public static bool Exists(string strSql, params SqlParameter[] cmdParms)
- {
- object obj = GetSingle(strSql, cmdParms);
- int cmdresult;
- if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
- {
- cmdresult = 0;
- }
- else
- {
- cmdresult = int.Parse(obj.ToString());
- }
- if (cmdresult == 0)
- {
- return false;
- }
- else
- {
- return true;
- }
- }
-
- #endregion
-
- #region 执行简单SQL语句
-
-
-
-
-
-
- public static int ExecuteSql(string SQLString)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- using (SqlCommand cmd = new SqlCommand(SQLString, connection))
- {
- try
- {
- connection.Open();
- int rows = cmd.ExecuteNonQuery();
- return rows;
- }
- catch (System.Data.SqlClient.SqlException E)
- {
- connection.Close();
- throw new Exception(E.Message);
- }
- }
- }
- }
-
-
-
-
-
-
-
- public static int ExecuteSqlByTime(string SQLString, int Times)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- using (SqlCommand cmd = new SqlCommand(SQLString, connection))
- {
- try
- {
- connection.Open();
- cmd.CommandTimeout = Times;
- int rows = cmd.ExecuteNonQuery();
- return rows;
- }
- catch (System.Data.SqlClient.SqlException E)
- {
- connection.Close();
- throw new Exception(E.Message);
- }
- }
- }
- }
-
-
-
-
-
- public static void ExecuteSqlTran(ArrayList SQLStringList)
- {
- using (SqlConnection conn = new SqlConnection(connectionString))
- {
- 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);
- }
- }
- }
-
-
-
-
-
-
-
- public static int ExecuteSql(string SQLString, string content)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- 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();
- }
- }
- }
-
-
-
-
-
-
-
- public static object ExecuteSqlGet(string SQLString, string content)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- 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();
- 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)
- {
- throw new Exception(E.Message);
- }
- finally
- {
- cmd.Dispose();
- connection.Close();
- }
- }
- }
-
-
-
-
-
-
-
- public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- 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();
- }
- }
- }
-
-
-
-
-
-
- public static object GetSingle(string SQLString)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- 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);
- }
- }
- }
- }
-
-
-
-
-
-
- public static SqlDataReader ExecuteReader(string strSQL)
- {
- SqlConnection connection = new SqlConnection(connectionString);
- 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);
- }
-
-
-
-
-
- }
-
-
-
-
-
-
- public static DataSet Query(string SQLString)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- DataSet ds = new DataSet();
- try
- {
- connection.Open();
- SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
- command.Fill(ds, "ds");
- }
- catch (System.Data.SqlClient.SqlException ex)
- {
- throw new Exception(ex.Message);
- }
- return ds;
- }
- }
-
- public static DataSet Query(string SQLString, string TableName)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- DataSet ds = new DataSet();
- try
- {
- connection.Open();
- SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
- command.Fill(ds, TableName);
- }
- catch (System.Data.SqlClient.SqlException ex)
- {
- throw new Exception(ex.Message);
- }
- return ds;
- }
- }
-
-
-
-
-
-
-
- public static DataSet Query(string SQLString, int Times)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- DataSet ds = new DataSet();
- try
- {
- connection.Open();
- SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
- command.SelectCommand.CommandTimeout = Times;
- command.Fill(ds, "ds");
- }
- catch (System.Data.SqlClient.SqlException ex)
- {
- throw new Exception(ex.Message);
- }
- return ds;
- }
- }
-
- #endregion
-
- #region 执行带参数的SQL语句
-
-
-
-
-
-
- public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- using (SqlCommand cmd = new SqlCommand())
- {
- try
- {
- PrepareCommand(cmd, connection, null, SQLString, cmdParms);
- int rows = cmd.ExecuteNonQuery();
- cmd.Parameters.Clear();
- return rows;
- }
- catch (System.Data.SqlClient.SqlException E)
- {
- throw new Exception(E.Message);
- }
- }
- }
- }
-
-
-
-
-
- public static void ExecuteSqlTran(Hashtable SQLStringList)
- {
- using (SqlConnection conn = new SqlConnection(connectionString))
- {
- conn.Open();
- using (SqlTransaction trans = conn.BeginTransaction())
- {
- SqlCommand cmd = new SqlCommand();
- try
- {
-
- 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;
- }
- }
- }
- }
-
-
-
-
-
-
- public static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- 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);
- }
- }
- }
- }
-
-
-
-
-
-
- public static SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
- {
- SqlConnection connection = new SqlConnection(connectionString);
- 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);
- }
-
-
-
-
-
-
- }
-
-
-
-
-
-
- public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- 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();
- }
- catch (System.Data.SqlClient.SqlException ex)
- {
- throw new Exception(ex.Message);
- }
- return ds;
- }
- }
- }
-
- public static 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;
- if (cmdParms != null)
- {
-
-
- foreach (SqlParameter parameter in cmdParms)
- {
- if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
- (parameter.Value == null))
- {
- parameter.Value = DBNull.Value;
- }
- cmd.Parameters.Add(parameter);
- }
- }
- }
-
- #endregion
-
- #region 存储过程操作
-
-
-
-
-
-
-
- public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
- {
- SqlConnection connection = new SqlConnection(connectionString);
- SqlDataReader returnReader;
- connection.Open();
- SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
- command.CommandType = CommandType.StoredProcedure;
- returnReader = command.ExecuteReader();
-
- return returnReader;
-
- }
-
-
-
-
-
-
-
- public static string RunProc(string storedProcName, IDataParameter[] parameters)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- string StrValue;
- connection.Open();
- SqlCommand cmd;
- cmd = BuildQueryCommand(connection, storedProcName, parameters);
- StrValue = cmd.ExecuteScalar().ToString();
- connection.Close();
- return StrValue;
- }
- }
-
-
-
-
-
-
-
-
- public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- DataSet dataSet = new DataSet();
- connection.Open();
- SqlDataAdapter sqlDA = new SqlDataAdapter();
- sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
- sqlDA.Fill(dataSet, tableName);
- connection.Close();
- return dataSet;
- }
- }
-
- public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- DataSet dataSet = new DataSet();
- connection.Open();
- SqlDataAdapter sqlDA = new SqlDataAdapter();
- sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
- sqlDA.SelectCommand.CommandTimeout = Times;
- sqlDA.Fill(dataSet, tableName);
- connection.Close();
- return dataSet;
- }
- }
-
-
-
-
-
-
-
-
- public static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
- {
- SqlCommand command = new SqlCommand(storedProcName, connection);
- command.CommandType = CommandType.StoredProcedure;
- foreach (SqlParameter parameter in parameters)
- {
- if (parameter != null)
- {
-
- if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
- (parameter.Value == null))
- {
- parameter.Value = DBNull.Value;
- }
- command.Parameters.Add(parameter);
- }
- }
-
- return command;
- }
-
-
-
-
-
-
-
-
- public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
- {
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- int result;
- connection.Open();
- SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
- rowsAffected = command.ExecuteNonQuery();
- result = (int)command.Parameters["ReturnValue"].Value;
-
- return result;
- }
- }
-
-
-
-
-
-
-
- public static 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;
- }
-
-
-
-
-
-
-
- public static string RunSql(string query)
- {
- string str;
- using (SqlConnection connection = new SqlConnection(connectionString))
- {
- using (SqlCommand cmd = new SqlCommand(query, connection))
- {
- try
- {
- connection.Open();
- str = (cmd.ExecuteScalar().ToString() == "") ? "" : cmd.ExecuteScalar().ToString();
- return str;
- }
- catch (System.Data.SqlClient.SqlException E)
- {
- connection.Close();
- throw new Exception(E.Message);
- }
- }
- }
- }
-
- #endregion
-
- }
- }