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简单的SQL Server数据库数据读取与数据操作
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简单实用的数据读取，数据操作方法，贴到程序里面直接调用
读取方法：
publicDataSetQuery(stringSQLText)
{
SqlConnectionmyConnection=newSqlConnection(ConfigurationSettings.AppSettings["conn"]);
DataSetds=newDataSet();
SqlDataAdaptermyCommand=newSqlDataAdapter(SQLText,myConnection);
myCommand.Fill(ds);
returnds;
}
操作方法：
//执行查询,返回SqlDataReader
publicSqlDataReaderQueryByReader(stringsqlstr)
{
if(sqlstr==String.Empty)
returnnull;
SqlConnectionmyConnection=newSqlConnection(ConfigurationSettings.AppSettings["connstring"]);
SqlCommandmyCommand=newSqlCommand(sqlstr,myConnection);
myConnection.Open();
SqlDataReaderresult=myCommand.ExecuteReader(CommandBehavior.CloseConnection);
returnresult;
}
//操作数据库,不返回结果
publicboolOperateDB(stringsqlstr)
{
if(sqlstr==String.Empty)
returnfalse;
SqlConnectionmyConnection=newSqlConnection(ConfigurationSettings.AppSettings["connstring"]);
SqlCommandmyCommand=newSqlCommand(sqlstr,myConnection);
myConnection.Open();
myCommand.ExecuteNonQuery();
myConnection.Close();
returntrue;
}
读取方法：
publicDataSetQuery(stringSQLText)
{
SqlConnectionmyConnection=newSqlConnection(ConfigurationSettings.AppSettings["conn"]);
DataSetds=newDataSet();
SqlDataAdaptermyCommand=newSqlDataAdapter(SQLText,myConnection);
myCommand.Fill(ds);
returnds;
}
操作方法：
//执行查询,返回SqlDataReader
publicSqlDataReaderQueryByReader(stringsqlstr)
{
if(sqlstr==String.Empty)
returnnull;
SqlConnectionmyConnection=newSqlConnection(ConfigurationSettings.AppSettings["connstring"]);
SqlCommandmyCommand=newSqlCommand(sqlstr,myConnection);
myConnection.Open();
SqlDataReaderresult=myCommand.ExecuteReader(CommandBehavior.CloseConnection);
returnresult;
}
//操作数据库,不返回结果
publicboolOperateDB(stringsqlstr)
{
if(sqlstr==String.Empty)
returnfalse;
SqlConnectionmyConnection=newSqlConnection(ConfigurationSettings.AppSettings["connstring"]);
SqlCommandmyCommand=newSqlCommand(sqlstr,myConnection);
myConnection.Open();
myCommand.ExecuteNonQuery();
myConnection.Close();
returntrue;
}