ASP.NET封装的SQL数据库访问类

2020-02-24 17:27:38

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using System;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Collections;
namespace MyCorporation.DepartMent.DataBase
{
///

/// 通用数据库类
///

public class DataBase
{
private string ConnStr = null;
public DataBase()
{
ConnStr = ConfigurationSettings.AppSettings["ConnStr"];
}
public DataBase(string Str)
{
try
{
this.ConnStr = Str;
}
catch (Exception ex)
{
throw ex;
}
}
///

/// 返回connection对象
///

///
public SqlConnection ReturnConn()
{
SqlConnection Conn = new SqlConnection(ConnStr);
Conn.Open();
return Conn;
}
public void Dispose(SqlConnection Conn)
{
if (Conn != null)
{
Conn.Close();
Conn.Dispose();
}
GC.Collect();
}
///

/// 运行SQL语句
///

///
public void RunProc(string SQL)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlCommand Cmd;
Cmd = CreateCmd(SQL, Conn);
try
{
Cmd.ExecuteNonQuery();
}
catch
{
throw new Exception(SQL);
}
Dispose(Conn);
return;
}
///

/// 运行SQL语句返回DataReader
///

///
/// SqlDataReader对象.
public SqlDataReader RunProcGetReader(string SQL)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlCommand Cmd;
Cmd = CreateCmd(SQL, Conn);
SqlDataReader Dr;
try
{
Dr = Cmd.ExecuteReader(CommandBehavior.Default);
}
catch
{
throw new Exception(SQL);
}
//Dispose(Conn);
return Dr;
}
///

/// 生成Command对象
///

///
///
///
public SqlCommand CreateCmd(string SQL, SqlConnection Conn)
{
SqlCommand Cmd;
Cmd = new SqlCommand(SQL, Conn);
return Cmd;
}
///

/// 生成Command对象
///

///
///
public SqlCommand CreateCmd(string SQL)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlCommand Cmd;
Cmd = new SqlCommand(SQL, Conn);
return Cmd;
}
///

/// 返回adapter对象
///

///
///
///
public SqlDataAdapter CreateDa(string SQL)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlDataAdapter Da;
Da = new SqlDataAdapter(SQL, Conn);
return Da;
}
///

/// 运行SQL语句,返回DataSet对象
///

/// SQL语句
/// DataSet对象
public DataSet RunProc(string SQL, DataSet Ds)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlDataAdapter Da;
//Da = CreateDa(SQL, Conn);
Da = new SqlDataAdapter(SQL, Conn);
try
{
Da.Fill(Ds);
}
catch (Exception Err)
{
throw Err;
}
Dispose(Conn);
return Ds;
}
///

/// 运行SQL语句,返回DataSet对象
///

/// SQL语句
/// DataSet对象
/// 表名
public DataSet RunProc(string SQL, DataSet Ds, string tablename)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlDataAdapter Da;
Da = CreateDa(SQL);
try
{
Da.Fill(Ds, tablename);
}
catch (Exception Ex)
{
throw Ex;
}
Dispose(Conn);
return Ds;
}
///

/// 运行SQL语句,返回DataSet对象
///

/// SQL语句
/// DataSet对象
/// 表名
public DataSet RunProc(string SQL, DataSet Ds, int StartIndex, int PageSize, string tablename)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlDataAdapter Da;
Da = CreateDa(SQL);
try
{
Da.Fill(Ds, StartIndex, PageSize, tablename);
}
catch (Exception Ex)
{
throw Ex;
}
Dispose(Conn);
return Ds;
}
///

/// 检验是否存在数据
///

///
public bool ExistDate(string SQL)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlDataReader Dr;
Dr = CreateCmd(SQL, Conn).ExecuteReader();
if (Dr.Read())
{
Dispose(Conn);
return true;
}
else
{
Dispose(Conn);
return false;
}
}
///

/// 返回SQL语句执行结果的第一行第一列
///

/// 字符串
public string ReturnValue(string SQL)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
string result;
SqlDataReader Dr;
try
{
Dr = CreateCmd(SQL, Conn).ExecuteReader();
if (Dr.Read())
{
result = Dr[0].ToString();
Dr.Close();
}
else
{
result = "";
Dr.Close();
}
}
catch
{
throw new Exception(SQL);
}
Dispose(Conn);
return result;
}
///

/// 返回SQL语句第一列,第ColumnI列,
///

/// 字符串
public string ReturnValue(string SQL, int ColumnI)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
string result;
SqlDataReader Dr;
try
{
Dr = CreateCmd(SQL, Conn).ExecuteReader();
}
catch
{
throw new Exception(SQL);
}
if (Dr.Read())
{
result = Dr[ColumnI].ToString();
}
else
{
result = "";
}
Dr.Close();
Dispose(Conn);
return result;
}
///

/// 生成一个存储过程使用的sqlcommand.
///

/// 存储过程名.
/// 存储过程入参数组.
/// sqlcommand对象.
public SqlCommand CreateCmd(string procName, SqlParameter[] prams)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlCommand Cmd = new SqlCommand(procName, Conn);
Cmd.CommandType = CommandType.StoredProcedure;
if (prams != null)
{
foreach (SqlParameter parameter in prams)
{
if (parameter != null)
{
Cmd.Parameters.Add(parameter);
}
}
}
return Cmd;
}
///

/// 为存储过程生成一个SqlCommand对象
///

/// 存储过程名
/// 存储过程参数
/// SqlCommand对象
private SqlCommand CreateCmd(string procName, SqlParameter[] prams, SqlDataReader Dr)
{
SqlConnection Conn;
Conn = new SqlConnection(ConnStr);
Conn.Open();
SqlCommand Cmd = new SqlCommand(procName, Conn);
Cmd.CommandType = CommandType.StoredProcedure;
if (prams != null)
{
foreach (SqlParameter parameter in prams)
Cmd.Parameters.Add(parameter);
}
Cmd.Parameters.Add(
new SqlParameter("ReturnValue", SqlDbType.Int, 4,
ParameterDirection.ReturnValue, false, 0, 0,
string.Empty, DataRowVersion.Default, null));
return Cmd;
}
///

/// 运行存储过程,返回.
///

/// 存储过程名
/// 存储过程参数
/// SqlDataReader对象
public void RunProc(string procName, SqlParameter[] prams, SqlDataReader Dr)
{
SqlCommand Cmd = CreateCmd(procName, prams, Dr);
Dr = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
return;
}
///

/// 运行存储过程,返回.
///

/// 存储过程名
/// 存储过程参数
public string RunProc(string procName, SqlParameter[] prams)
{
SqlDataReader Dr;
SqlCommand Cmd = CreateCmd(procName, prams);
Dr = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection);
if (Dr.Read())
{
return Dr.GetValue(0).ToString();
}
else
{
return "";
}
}
///

/// 运行存储过程,返回dataset.
///

/// 存储过程名.
/// 存储过程入参数组.
/// dataset对象.
public DataSet RunProc(string procName, SqlParameter[] prams, DataSet Ds)
{
SqlCommand Cmd = CreateCmd(procName, prams);
SqlDataAdapter Da = new SqlDataAdapter(Cmd);
try
{
Da.Fill(Ds);
}
catch (Exception Ex)
{
throw Ex;
}
return Ds;
}
}
}

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