我要评论本文实例讲述了c#的sql操作类，分享给大家供大家参考。具体方法如下：
复制代码 代码如下:
using system;
using system.collections.generic;
using system.text;
using system.data;
using system.data.sqlclient;
using system.windows.forms;
namespace yjgl
{
/// <summary>
/// 数据访问基础类(sql)
/// </summary>
class baseoperate
{
#region 建立数据库连接
/// <summary>
/// 建立数据库连接.
/// </summary>
/// <returns>返回sqlconnection对象</returns>
public sqlconnection getcon()
{
string m_str_sqlcon = "data source=pc-200201010009 ;database=db_yjzl;user id=sa;pwd=123";//连接字符串
sqlconnection mycon = new sqlconnection(m_str_sqlcon); //创建连接对象
return mycon;
}
#endregion
#region 执行sqlcommand命令
/// <summary>
/// 执行sqlcommand
/// </summary>
/// <param name="m_str_sqlstr">sql语句</param>
public void getcom(string m_str_sqlstr)
{
sqlconnection sqlcon = this.getcon(); //获取连接字符串
sqlcon.open(); //打开连接
try
{
sqlcommand sqlcom = new sqlcommand(m_str_sqlstr, sqlcon); //通过sql语句和连接对象创建命令对象
sqlcom.executenonquery(); //对sqlcon执行sql语句并返回受影响的行数
sqlcom.dispose(); //释放sqlcom'
}
catch (sqlexception e)
{
messagebox.show(e.tostring(), "信息提示", messageboxbuttons.ok, messageboxicon.information);
}
finally
{
sqlcon.close();
sqlcon.dispose();
}
}
#endregion
#region 创建dataset对象
/// <summary>
/// 创建一个dataset对象
/// </summary>
/// <param name="m_str_sqlstr">sql语句</param>
/// <param name="m_str_table">表名</param>
/// <returns>返回dataset对象</returns>
public dataset getds(string m_str_sqlstr, string m_str_table) //查询
{
sqlconnection sqlcon = this.getcon();
sqldataadapter sqlda = new sqldataadapter(m_str_sqlstr, sqlcon);
dataset myds = new dataset();
sqlda.fill(myds, m_str_table);
return myds;
}
#endregion
#region 创建sqldatareader对象
/// <summary>
/// 创建一个sqldatareader对象
/// </summary>
/// <param name="m_str_sqlstr">sql语句</param>
/// <returns>返回sqldatareader对象</returns>
public sqldatareader getread(string m_str_sqlstr)
{
sqlconnection sqlcon = this.getcon();
sqlcommand sqlcom = new sqlcommand(m_str_sqlstr, sqlcon);
sqlcon.open();
sqldatareader sqlread = sqlcom.executereader(commandbehavior.closeconnection);
return sqlread;
}
#endregion
}
}
using system.collections.generic;
using system.text;
using system.data;
using system.data.sqlclient;
using system.windows.forms;
namespace yjgl
{
/// <summary>
/// 数据访问基础类(sql)
/// </summary>
class baseoperate
{
#region 建立数据库连接
/// <summary>
/// 建立数据库连接.
/// </summary>
/// <returns>返回sqlconnection对象</returns>
public sqlconnection getcon()
{
string m_str_sqlcon = "data source=pc-200201010009 ;database=db_yjzl;user id=sa;pwd=123";//连接字符串
sqlconnection mycon = new sqlconnection(m_str_sqlcon); //创建连接对象
return mycon;
}
#endregion
#region 执行sqlcommand命令
/// <summary>
/// 执行sqlcommand
/// </summary>
/// <param name="m_str_sqlstr">sql语句</param>
public void getcom(string m_str_sqlstr)
{
sqlconnection sqlcon = this.getcon(); //获取连接字符串
sqlcon.open(); //打开连接
try
{
sqlcommand sqlcom = new sqlcommand(m_str_sqlstr, sqlcon); //通过sql语句和连接对象创建命令对象
sqlcom.executenonquery(); //对sqlcon执行sql语句并返回受影响的行数
sqlcom.dispose(); //释放sqlcom'
}
catch (sqlexception e)
{
messagebox.show(e.tostring(), "信息提示", messageboxbuttons.ok, messageboxicon.information);
}
finally
{
sqlcon.close();
sqlcon.dispose();
}
}
#endregion
#region 创建dataset对象
/// <summary>
/// 创建一个dataset对象
/// </summary>
/// <param name="m_str_sqlstr">sql语句</param>
/// <param name="m_str_table">表名</param>
/// <returns>返回dataset对象</returns>
public dataset getds(string m_str_sqlstr, string m_str_table) //查询
{
sqlconnection sqlcon = this.getcon();
sqldataadapter sqlda = new sqldataadapter(m_str_sqlstr, sqlcon);
dataset myds = new dataset();
sqlda.fill(myds, m_str_table);
return myds;
}
#endregion
#region 创建sqldatareader对象
/// <summary>
/// 创建一个sqldatareader对象
/// </summary>
/// <param name="m_str_sqlstr">sql语句</param>
/// <returns>返回sqldatareader对象</returns>
public sqldatareader getread(string m_str_sqlstr)
{
sqlconnection sqlcon = this.getcon();
sqlcommand sqlcom = new sqlcommand(m_str_sqlstr, sqlcon);
sqlcon.open();
sqldatareader sqlread = sqlcom.executereader(commandbehavior.closeconnection);
return sqlread;
}
#endregion
}
}
希望本文所述对大家的c#程序设计有所帮助。
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