Asp.Net 通用数据操作类 (附通用数据基类)_[Asp.Net教程]
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
namespace EC
{
///
/// EB通用与数据交互操作基类
///
public class EBCommonObj:IDisposable
{
private bool _alreadyDispose = false;
private DBOperate dbo;
private string sql = null;
private System.Data.DataSet ds;
#region 构造与析构函数
public EBCommonObj()
{
dbo = new DBOperate();
}
~EBCommonObj()
{
dbo.Dispose();
Dispose();
}
protected virtual void Dispose(bool isDisposing)
{
if (_alreadyDispose) return;
if (isDisposing)
{
dbo.Dispose();
}
_alreadyDispose = true;
}
#endregion
#region IDisposable 成员
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
#endregion
#region 通用删除数据库中的某条记录
///
/// 通用删除数据库中的某条记录
///
/// 数据表名
/// 字段名
/// 是否是int型
/// 关键词值
public void CommDelByID(string tbl, string fld, bool IsInt, string key)
{
sql = "delete from {0} where {1}=";
if (IsInt)
{
sql += "{3}";
}
else
{
sql += "'{3}'";
}
dbo.ExecuteNonQuery(string.Format(sql, tbl, fld, IsInt, key));
}
#endregion
#region 通用读取数据库中的某条记录
///
/// 通用读取数据库中的某条记录
///
///
///
///
///
///
public DataSet CommReadByID(string tbl,string fld,bool IsInt,string key)
{
sql = "select * from {0} where {1}=";
if (IsInt)
{
sql += "{3}";
}
else
{
sql += "'{3}'";
}
ds = dbo.GetDataSet(string.Format(sql, tbl, fld, IsInt, key));
return ds;
}
#endregion
#region 修改数据库中的某条记录为true 或flase
///
/// 修改数据库中的某条记录为true 或flase
///
/// 表格式
/// 主键标识
/// 是否整形
/// 主键
/// flase键
/// key值
public void CommUpdateByID(string tbl,string fld,bool Isint,string key,string flgfld,int flgkey)
{
sql = "update {0} set {4}={5} where {1}=";
if (Isint)
{
sql += "{3}";
}
else
{
sql += "'{3}'";
}
dbo.ExecuteNonQuery(string.Format(sql, tbl, fld, Isint, key, flgfld, flgkey));
}
#endregion
#region 绑定DropDown 列表
///
/// 绑定DropDown 列表
///
/// 表名
/// 下拉框值
/// 下拉框显示内容
/// where 条件语句 不用加where 没有条件则为空
/// DropDownList控件名称
public void DropBind(string tbl, string selValue, string selText, string strWhere,System.Web.UI.WebControls.DropDownList dr)
{
ds = GetDrop(tbl, selValue, selText, strWhere);
dr.DataSource = ds;
dr.DataTextField = selText;
dr.DataValueField = selValue;
dr.DataBind();
ds.Clear();
ds.Dispose();
}
///
/// 读取表中数据
///
///
///
///
/// 条件
///
public DataSet GetDrop(string tbl,string selValue,string selText,string strWhere)
{
sql = "select {1},{2} from {0} where 1=1 and {3}";
ds = dbo.GetDataSet(string.Format(sql, tbl, selValue, selText, strWhere));
return ds;
}
#endregion
#region 判断是否有数据
///
/// 判断是否有数据:存在数据时返回true,否则返回Flash
///
/// 数据表名
/// 字段名
/// 关键词
/// 是否是数字类型:是:true;否:false
/// true或false
public bool IsHaveDate(string tbl,string fld,string key,bool IsKeyInt)
{
bool Rev = false;
if (IsKeyInt)
{
sql = "select * from {0} where {1}={2}";
}
else
{
sql = "select * from {0} where {1}='{2}'";
}
ds = dbo.GetDataSet(string.Format(sql, tbl, fld, key));
if (ds.Tables[0].Rows.Count > 0)
{
Rev = true;
}
return Rev;
}
#endregion
}
}
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############################################/
/**********************************************************************************
*
* 功能说明:数据操作基类,可以执行内联SQL语句和存储过程
* 作者: 刘功勋;
* 版本:V0.1(C#2.0);时间:2006-4-28
*
* *******************************************************************************/
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
namespace EC
{
///
/// 数据库连接及操作对象类
///
public class DBBase
{
private bool _alreadyDispose = false;
private System.Data.SqlClient.SqlConnection conn;
private System.Data.SqlClient.SqlCommand com;
#region 构造与柝构
public DBBase()
{
try
{
conn=new System.Data.SqlClient.SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]);
conn.Open();
com = new System.Data.SqlClient.SqlCommand();
com.Connection = conn;
}
catch (Exception ee)
{
throw new Exception("连接数据库出错");
}
}
~DBBase()
{
Dispose();
}
protected virtual void Dispose(bool isDisposing)
{
if (_alreadyDispose) return;
if (isDisposing)
{
// TOD 此处释放受控资源
if (com != null)
{
com.Cancel();
com.Dispose();
}
if (conn != null)
{
try
{
conn.Close();
conn.Dispose();
}
catch (Exception ee)
{
}
finally
{
conn = null;
}
}
}
// TOD 此处释放非受控资源。设置被处理过标记
_alreadyDispose = true;
}
#endregion
#region IDisposable 成员
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
#endregion
#region 数据基本操作
///
/// ExecuteNonQuery
///
/// SQL语句
/// 返回影响行数
public int ExecuteNonQuery(string sqlString)
{
int ret = 0;
com.CommandText = sqlString;
com.CommandType = CommandType.Text;
try
{
ret = com.ExecuteNonQuery();
}
catch (Exception ee)
{
throw new Exception("SQL:" + sqlString + "
" + ee.Message.ToString());
}
finally
{
com.Cancel();
}
return ret;
}
///
/// 执行插入语句返回IDENTITY
///
/// SQL语句
/// @@IDENTITY
public int ExecInsert(string sqlString)
{
int identity = 0;
//仅能执行Insert into 语句
if (!sqlString.ToLower().Contains("insert into"))
{
return -1;
}
sqlString += " Select @@IDENTITY";
System.Data.DataSet ds = new DataSet();
try
{
System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter(sqlString, conn);
da.Fill(ds);
da.Dispose();
}
catch (Exception ee)
{
throw new Exception("SQL:" + sqlString + "
" + ee.Message.ToString());
}
if (ds.Tables[0].Rows.Count > 0)
{
identity =Convert.ToInt32(ds.Tables[0].Rows[0][0]);
}
ds.Clear();
ds.Dispose();
return identity;
}
///
/// 执行SQL语句返回记录集
///
/// SQL语句
/// DataSet
public DataSet GetDataSet(string sqlString)
{
System.Data.DataSet ds = new DataSet();
try
{
System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter(sqlString, conn);
da.Fill(ds);
da.Dispose();
}
catch (Exception ee)
{
throw new Exception("SQL:" + sqlString + "
" + ee.Message.ToString());
}
return ds;
}
///
/// 执行存储过程(返回N种参数)
///
/// 过程名
/// 传入的参数表
/// 传出的参数表
/// 返回参数表
public System.Collections.Hashtable ExecProcedure(string procName, System.Collections.Hashtable hashtable, System.Collections.Hashtable hashtable1)
{
System.Collections.Hashtable hashtable2 = new System.Collections.Hashtable();
System.Collections.IDictionaryEnumerator ide = hashtable.GetEnumerator();
System.Collections.IDictionaryEnumerator ide1 = hashtable1.GetEnumerator();
com.CommandType = CommandType.StoredProcedure;
com.CommandText = procName;
while (ide.MoveNext())
{
System.Data.SqlClient.SqlParameter p = new System.Data.SqlClient.SqlParameter(ide.Key.ToString(), ide.Value);
com.Parameters.Add(p);
}
while (ide1.MoveNext())
{
System.Data.SqlClient.SqlParameter p = new System.Data.SqlClient.SqlParameter(ide1.Key.ToString(), ide.Value);
com.Parameters.Add(p);
}
try
{
com.ExecuteNonQuery();
ide1 = hashtable1.GetEnumerator();
while (ide1.MoveNext())
{
string k = ide1.Key.ToString();
hashtable2.Add(k, com.Parameters[k].Value);
}
}
catch (Exception ee)
{
throw new Exception(ee.Message.ToString());
}
finally
{
com.Cancel();
}
return hashtable2;
}
///
/// 执行存储过程(返回记录集)
///
/// 过程名
/// 传入的参数表
/// 返回记录集
public DataSet ExecProcedure(string procName, System.Collections.Hashtable hashtable)
{
System.Data.DataSet ds = new DataSet();
com.CommandText = procName;
com.CommandType = CommandType.StoredProcedure;
System.Collections.IDictionaryEnumerator ide = hashtable.GetEnumerator();
while (ide.MoveNext())
{
System.Data.SqlClient.SqlParameter p = new System.Data.SqlClient.SqlParameter(ide.Key.ToString(), ide.Value);
com.Parameters.Add(p);
}
try
{
System.Data.SqlClient.SqlDataAdapter da = new System.Data.SqlClient.SqlDataAdapter(com);
da.Fill(ds);
da.Dispose();
}
catch (Exception ee)
{
throw new Exception(ee.Message.ToString());
}
finally
{
com.Cancel();
}
return ds;
}
#endregion
#region 数据操作
///
/// 统计某表记录总数
///
/// 主键/索引键
/// 数据库.用户名.表名
/// 查询条件
/// 返回记录总数
public int GetRecordCount(string keyField, string tableName, string condition)
{
int RecordCount = 0;
string sql = "select count(" + keyField + ") as count from " + tableName + " " + condition;
System.Data.DataSet ds = GetDataSet(sql);
if (ds.Tables[0].Rows.Count > 0)
{
RecordCount =Convert.ToInt32(ds.Tables[0].Rows[0][0]);
}
ds.Clear();
ds.Dispose();
return RecordCount;
}
///
/// 统计某表记录总数
///
/// 可重复的字段
/// 数据库.用户名.表名
/// 查询条件
/// 字段是否主键
/// 返回记录总数
public int GetRecordCount(string Field, string tableName, string condition, bool flag)
{
int RecordCount = 0;
if (flag)
{
RecordCount = GetRecordCount(Field, tableName, condition);
}
else
{
string sql = "select count(distinct(" + Field + ")) as count from " + tableName + " " + condition;
System.Data.DataSet ds = GetDataSet(sql);
if (ds.Tables[0].Rows.Count > 0)
{
RecordCount = Convert.ToInt32(ds.Tables[0].Rows[0][0]);
}
ds.Clear();
ds.Dispose();
}
return RecordCount;
}
///
/// 统计某表分页总数
///
/// 主键/索引键
/// 表名
/// 查询条件
/// 页宽
/// 记录总数
/// 返回分页总数
public int GetPageCount(string keyField, string tableName, string condition, int pageSize, int RecordCount)
{
int PageCount = 0;
PageCount = (RecordCount % pageSize) > 0 ? (RecordCount / pageSize) + 1 : RecordCount / pageSize;
if (PageCount < 1) PageCount = 1;
return PageCount;
}
///
/// 统计某表分页总数
///
/// 主键/索引键
/// 表名
/// 查询条件
/// 页宽
/// 返回页面总数
public int GetPageCount(string keyField, string tableName, string condition, int pageSize, ref int RecordCount)
{
RecordCount = GetRecordCount(keyField, tableName, condition);
return GetPageCount(keyField, tableName, condition, pageSize, RecordCount);
}
///
/// 统计某表分页总数
///
/// 可重复的字段
/// 表名
/// 查询条件
/// 页宽
/// 是否主键
/// 返回页页总数
public int GetPageCount(string Field, string tableName, string condition, ref int RecordCount, int pageSize, bool flag)
{
RecordCount = GetRecordCount(Field, tableName, condition, flag);
return GetPageCount(Field, tableName, condition, pageSize, ref RecordCount);
}
#endregion
#region 分页函数
///
/// 构造分页查询SQL语句
///
/// 主键
/// 所有需要查询的字段(field1,field2...)
/// 库名.拥有者.表名
/// 查询条件1(where ...)
/// 查询条件2(order by ...)
/// 当前页号
/// 页宽
/// SQL语句
public static string JoinPageSQL(string KeyField, string FieldStr, string TableName, string Condition, string Condition2, int CurrentPage, int PageSize)
{
string sql = null;
if (CurrentPage == 1)
{
sql = "select top " + CurrentPage * PageSize + " " + FieldStr + " from " + TableName + " " + Condition + " " + Condition2 + " ";
}
else
{
sql = "select * from (";
sql += "select top " + CurrentPage * PageSize + " " + FieldStr + " from " + TableName + " " + Condition + " " + Condition2 + ") a ";
sql += "where " + KeyField + " not in (";
sql += "select top " + (CurrentPage - 1) * PageSize + " " + KeyField + " from " + TableName + " " + Condition + " " + Condition2 + ")";
}
return sql;
}
///
/// 构造分页查询SQL语句
///
/// 字段名(非主键)
/// 库名.拥有者.表名
/// 查询条件1(where ...)
/// 查询条件2(order by ...)
/// 当前页号
/// 页宽
/// SQL语句
public static string JoinPageSQL(string Field, string TableName, string Condition, string Condition2, int CurrentPage, int PageSize)
{
string sql = null;
if (CurrentPage == 1)
{
sql = "select top " + CurrentPage * PageSize + " " + Field + " from " + TableName + " " + Condition + " " + Condition2 + " group by " + Field;
}
else
{
sql = "select * from (";
sql += "select top " + CurrentPage * PageSize + " " + Field + " from " + TableName + " " + Condition + " " + Condition2 + " group by " + Field + " ) a ";
sql += "where " + Field + " not in (";
sql += "select top " + (CurrentPage - 1) * PageSize + " " + Field + " from " + TableName + " " + Condition + " " + Condition2 + " group by " + Field + ")";
}
return sql;
}
///
/// 页面分页显示功能
///
/// 参数串(a=1&b=2...)
/// 记录总数
/// 页宽
/// 当前页号
/// 是否显示跳转输入框及按钮
/// 样式(1:上页下页...,2:1234...)
///
public static string Paging(string Parameters, int RecordCount, int PageCount, int PageSize, int CurrentPage, bool ShowJump, int Style)
{
string str;
if (RecordCount <= PageSize) return "";
if (Parameters != "") Parameters += "&";
if (CurrentPage < 1) CurrentPage = 1;
if (CurrentPage > PageCount) CurrentPage = PageCount;
str = "
";
str += "共 " + RecordCount + " 条记录 页次：" + CurrentPage + "/" + PageCount + "页 ";
str += PageSize + "条/页 ";
if (Style == 1)
{
if (CurrentPage == 1)
str += "首页 上页 ";
else
{
str += "首页 ";
str += "上页 "; ;
}
if (CurrentPage == PageCount )
{
str += "下页 尾页 ";
}
else
{
str += "下页 ";
str += "尾页 ";
}
}
else if (Style == 2)
{
int NumberSize = 10;
int PageNumber = (CurrentPage - 1) / NumberSize;
if (PageNumber * NumberSize > 0)
str += "[<<] ";
int i;
for (i = PageNumber * NumberSize + 1; i <= (PageNumber + 1) * NumberSize; i++)
{
if (i == CurrentPage)
str += "[" + i + "] ";
else
str += "[" + i + "] ";
if (i == PageCount) break;
}
if (i < RecordCount) str += "[>>] ";
}
if (ShowJump)
{
str += "";
}
str += "
";
return str;
}
#endregion
}
}
