/// <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 static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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 e;
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}
/// <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 static void ExecuteSqlTran(Hashtable SQLStringList)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection conn = new SqlConnection(db.connectionString))
{
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>
/// 批量插入
/// </summary>
/// <param name="dt"></param>
/// <param name="tablename"></param>
/// <returns></returns>
public static bool SqlBulkCopyInsert(DataTable dt, string tablename, string connectionStringName)
{
bool flag = false;
DbHelperSQL db = new HelpereStr(connectionStringName);
SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(db.connectionString, SqlBulkCopyOptions.UseInternalTransaction);
sqlBulkCopy.BulkCopyTimeout = 5000;
sqlBulkCopy.NotifyAfter = dt.Rows.Count;
sqlBulkCopy.BatchSize = dt.Rows.Count;
try
{
if (dt != null && dt.Rows.Count != 0)
{
sqlBulkCopy.DestinationTableName = tablename;
sqlBulkCopy.WriteToServer(dt);
}
flag = true;
}
catch (Exception ex)
{
flag = false;
}
finally
{
sqlBulkCopy.Close();
}
return(flag);
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataTable QueryTable(string connectionStringName, string SQLString)
{
DbHelperSQL db = new HelpereStr(connectionStringName);
using (SqlConnection connection = new SqlConnection(db.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);
}
if (ds != null && ds.Tables.Count != 0 && ds.Tables[0].Rows.Count != 0)
{
return(ds.Tables[0]);
}
else
{
return(null);
}
}
}
public static object GetSingle(string SQLString, int Times)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
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 e;
}
}
}
}
/// <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 static object ExecuteSqlGet(string SQLString, string content)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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 e;
}
finally
{
cmd.Dispose();
connection.Close();
}
}
}
/// <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 static int ExecuteSql(string SQLString, string content)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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 e;
}
finally
{
cmd.Dispose();
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 static int ExecuteSqlTran(List <String> SQLStringList)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection conn = new SqlConnection(db.connectionString))
{
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
SqlTransaction tx = conn.BeginTransaction();
cmd.Transaction = tx;
try
{
int count = 0;
for (int n = 0; n < SQLStringList.Count; n++)
{
string strsql = SQLStringList[n];
if (strsql.Trim().Length > 1)
{
cmd.CommandText = strsql;
count += cmd.ExecuteNonQuery();
}
}
tx.Commit();
return(count);
}
catch
{
tx.Rollback();
return(0);
}
}
}
/// <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 static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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 e;
}
}
}
}
/// <summary>
/// 执行存储过程，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
{
DbHelperSQL db = new HelpereStr();
SqlConnection connection = new SqlConnection(db.connectionString);
SqlDataReader returnReader;
connection.Open();
SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
command.CommandType = CommandType.StoredProcedure;
returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
return(returnReader);
}
/// <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 static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.connectionString))
{
int result;
connection.Open();
SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
rowsAffected = command.ExecuteNonQuery();
result = (int)command.Parameters["ReturnValue"].Value;
//Connection.Close();
return(result);
}
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.connectionString))
{
DataSet ds = new DataSet();
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.Fill(ds, "ds");
return(ds);
}
}
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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);
}
}
/// <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 static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection conn = new SqlConnection(db.connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
SqlCommand cmd = new SqlCommand();
try
{
int indentity = 0;
//循环
foreach (DictionaryEntry myDE in SQLStringList)
{
string cmdText = myDE.Key.ToString();
SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
foreach (SqlParameter q in cmdParms)
{
if (q.Direction == ParameterDirection.InputOutput)
{
q.Value = indentity;
}
}
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
int val = cmd.ExecuteNonQuery();
foreach (SqlParameter q in cmdParms)
{
if (q.Direction == ParameterDirection.Output)
{
indentity = Convert.ToInt32(q.Value);
}
}
cmd.Parameters.Clear();
}
trans.Commit();
}
catch
{
trans.Rollback();
throw;
}
}
}
}
/// <summary>
/// 批量插入更新
/// </summary>
/// <param name="ds"></param>
/// <param name="strTblName"></param>
/// <param name="strConnection"></param>
/// <returns></returns>
public static int UpdateByDataSet(DataTable dt, string strTblName)
{
try
{
DbHelperSQL db = new HelpereStr();
SqlConnection connection = new SqlConnection(db.connectionString);
connection.Open();
SqlDataAdapter ada = new SqlDataAdapter(("select * from " + strTblName), connection);
SqlCommandBuilder cb = new SqlCommandBuilder(ada);
return(ada.Update(dt));
}
catch (Exception errBU)
{
throw errBU;
}
}
/// <summary>
/// 执行查询语句，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="strSQL">查询语句</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string strSQL)
{
DbHelperSQL db = new HelpereStr();
SqlConnection connection = new SqlConnection(db.connectionString);
SqlCommand cmd = new SqlCommand(strSQL, connection);
try
{
connection.Open();
SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return(myReader);
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
}
/// <summary>
/// 批量插入
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static int SqlBulkCopy(DataTable dt)
{
DbHelperSQL db = new HelpereStr();
SqlBulkCopy sbc = new SqlBulkCopy(db.connectionString, SqlBulkCopyOptions.UseInternalTransaction);
sbc.BulkCopyTimeout = 5000;
sbc.NotifyAfter = dt.Rows.Count;
try
{
sbc.DestinationTableName = "bcd";
sbc.WriteToServer(dt);
}
catch (Exception ex)
{
}
return(sbc.NotifyAfter);
}
public static DataSet Query(string connectionStringName, string SQLString)
{
DbHelperSQL db = new HelpereStr(connectionStringName);
using (SqlConnection connection = new SqlConnection(db.connectionString))
{
DataSet ds = new DataSet();
try
{
connection.Open();
SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
}
return(ds);
}
}
public static DataSet Query(string SQLString, int Times)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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);
}
}
/// <summary>
/// 批量插入
/// </summary>
/// <param name="dt"></param>
/// <param name="tablename"></param>
/// <returns></returns>
public static int SqlBulkCopyInsert(DataTable dt, string tablename)
{
DbHelperSQL db = new HelpereStr();
SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(db.connectionString, SqlBulkCopyOptions.UseInternalTransaction);
sqlBulkCopy.BulkCopyTimeout = 5000;
sqlBulkCopy.NotifyAfter = dt.Rows.Count;
sqlBulkCopy.BatchSize = dt.Rows.Count;
try
{
if (dt != null && dt.Rows.Count != 0)
{
sqlBulkCopy.DestinationTableName = tablename;
sqlBulkCopy.WriteToServer(dt);
}
}
catch (Exception ex)
{
}
return(sqlBulkCopy.NotifyAfter);
}
/// <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 static int ExecuteSqlByConnStr(string connectionStringName, string SQLString)
{
DbHelperSQL db = new HelpereStr(connectionStringName);
using (SqlConnection connection = new SqlConnection(db.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 e;
}
}
}
}
/// <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 static int ExecuteSql(string connectionStringName, string SQLString, params SqlParameter[] cmdParms)
{
DbHelperSQL db = new HelpereStr(connectionStringName);
using (SqlConnection connection = new SqlConnection(db.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 e;
}
}
}
}
/// <summary>
/// 执行查询语句，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// </summary>
/// <param name="strSQL">查询语句</param>
/// <returns>SqlDataReader</returns>
public static SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
{
DbHelperSQL db = new HelpereStr();
SqlConnection connection = new SqlConnection(db.connectionString);
SqlCommand cmd = new SqlCommand();
try
{
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
cmd.Parameters.Clear();
return(myReader);
}
catch (System.Data.SqlClient.SqlException e)
{
throw e;
}
// finally
// {
// cmd.Dispose();
// connection.Close();
// }
}
/// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
{
DbHelperSQL db = new HelpereStr();
using (SqlConnection connection = new SqlConnection(db.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);
}
}
}
