数据更新时出错

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings[ "ConnectionString "].ConnectionString);
conn.Open() ;


SqlDataAdapter adapter = new SqlDataAdapter( "SELECT * FROM T_order ", conn);

SqlCommandBuilder builder = new SqlCommandBuilder(adapter);

DataSet thisDataSet = new DataSet();
adapter.Fill(thisDataSet, "t_order ");
thisDataSet.Tables[ "t_order "].Rows[1][1] = "22 ";
adapter.Update(thisDataSet, "t_order ");
conn.Close();


adapter.Update(thisDataSet, "t_order ");这一句时出错


[解决办法]
update sql?哪里去了？
[解决办法]
你要实现什么??

是把从表里查出来的数据,填充到数据集,再显示出来??
[解决办法]
如果要更新表里的数据,用sql

e.g

update 表名 set 字段名=值 where 主键=
[解决办法]
SqlDataAdapter adapter = new SqlDataAdapter( "SELECT * FROM T_order ", conn);

SqlCommandBuilder builder = new SqlCommandBuilder(adapter);

这两行代码后面少一行代码,builder.GetUpdateCommand ()

[解决办法]
LS正解
[解决办法]
T_order表中还没信息???

[解决办法]
主中没有主键吧