SQL Server 学习心得_sqlserver学习心得
SQL Server 学习心得由刀豆文库小编整理,希望给你工作、学习、生活带来方便,猜你可能喜欢“sqlserver学习心得”。
SQL Server 2005学习心得(已变成DLL控件可直接调用)
1、C#编程连接SQL Server 2005 数据库的代码:
答: SqlConnection myconnection = new SqlConnection(“Integrated Security=SSPI;Initial Catalog=' 数据库名 ';Data Source='服务器名';User ID='用户登录名';Paword='密码';Connect Timeout=30”);
myconnection.Open();//打开数据库
obj SqlConnection.Close();//关闭数据库
2、C#编程访问数据表中的数据:
答:string SQL = “select EmpName From tb_EmpInfo”;
SqlCommand thisCommand = new SqlCommand(SQL,myconnection);
SqlDataReader thisReader = thisCommand.ExecuteReader();
while(thisReader.Read())//读取数据关键代码
{
MeageBox.Show(thisReader[“EmpName”].ToString());//输出数据
}
3、C#编程访问查询数据表的数据
答 string SQL = “select EmpName From tb_EmpInfo where EmpName=‘邵珠勇’”;
SqlCommand thisCommand = new SqlCommand(SQL,myconnection);
SqlDataReader thisReader = thisCommand.ExecuteReader();
while(thisReader.Read())//读取数据关键代码
{
MeageBox.Show(thisReader[“EmpName”].ToString());//输出数据
}
4、C#编程访问并往数据表中插入数据
string SQL = “insert into
tb_EmpInfo(EmpId,EmpName,EmpLoginName,EmpLoginPwd,EmpSex,EmpBirthDay,EmpDept,EmpPost,EmpPhone,EmpPhoneM,EmpAddre,EmpFalg)values('12345678','束同同','zhanghan','123','男','1990/02/21','食品部','组长','1234567','***','安徽省',0)”;
SqlCommand thisCommand = new SqlCommand(SQL, myconnection);
thisCommand.ExecuteNonQuery();
5、C#编程访问并更新数据表中的数据内容
答:string SQL = “update tb_EmpInfo set EmpName= '束同',EmpSex='女'” + “ where EmpID='12345678'”;SqlCommand thisCommand = new SqlCommand(SQL, myconnection);
thisCommand.ExecuteNonQuery();
6、C#编程访问并删除数据表中的数据内容
答: string SQL = “delete from tb_EmpInfo where EmpID='12345678'”;
SqlCommand thisCommand = new SqlCommand(SQL, myconnection);
thisCommand.ExecuteNonQuery();
7、C#中查询代码
答:string SQL = “select EmpName From tb_EmpInfo”;DataSet ds = new DataSet();
SqlDataAdapter obj=new SqlDataAdapter();
obj.SelectCommand = new SqlCommand(SQL,myconnection);obj.Fill(ds, “tb_EmpInfo”);
dataGridView1.DataSource = ds.Tables[0];