关于linq的简单问题 [英] simple question about linq

问题描述

你好！


如果我有这个简单的linq结构


var temp =来自myWorksheetList中的o

其中o.ID == workSheetID

选择o.subFileID;


这将始终只给出一个temp记录，这是
selct o.subfileID


如果我现在想从这个临时集合中获取字符串值，那么

最简单的方法是什么这个。


有点像

string myID = temp.ToString（）;


// Tony

解决方案

Tony Johansson写道：

您好！


如果我有这个简单的linq结构


var temp =来自myWorksheetList中的o

其中o.ID == workSheetID

选择o.subFileID;


这将始终只给出一个temp记录，这是结果

来自s elct o.subfileID


如果我现在想从这个临时集合中获取字符串值，那么

最简单的方法是什么。


有点像

string myID = temp.ToString（）;


// Tony

那可能会给你一个数据类型的字符串...


string myID = temp.First（）;


或者


string myID = temp [0];


-

G？ran Andersson

_____
http：//www.guffa .com

你好！


这不起作用，因为你得到了编译错误。


// Tony


" G？ran Andersson" < gu *** @ guffa.com写信息

新闻：ev ************** @ TK2MSFTNGP02.phx.gbl ...

Tony Johansson写道：

>你好！

如果我有这个简单的linq建设

var temp =来自myWorksheetList中的o
其中o.ID == workSheetID
选择o.subFileID;

这将始终只给出一个结果记录在temp中这是结果来自selct o.subfileID

如果我现在想从这个临时集合中获取字符串值是什么
最简单的
这样做的方法。

像
字符串myID = temp.ToString（）;

// Tony

这可能会给你一个包含数据类型的字符串...


string myID = temp.First（）;


或者


string myID = temp [0];


-

G？ran安德森

_____
http://www.guffa.com

< blockquote>如果将o.subFileID定义为字符串，它应该可以正常工作。你确实没有说明它是如何定义的。也许：string myID = temp.First（）。ToString（）;


" Tony Johansson"写道：

你好！


这不起作用，因为你得到编译错误。

// Tony


" G ?? ran Andersson" < gu *** @ guffa.com写信息

新闻：ev ************** @ TK2MSFTNGP02.phx.gbl ...

Tony Johansson写道：

你好！


如果我有这个简单的linq构造


var temp =来自myWorksheetList中的o

其中o.ID == workSheetID

select o.subFileID;


这个结果总是只给出一个结果记录，这就是结果

来自selct o.subfileID


如果我现在想要从这个临时集合中获取字符串值，那么

最简单的方法是什么。


有些事情如

string myID = temp.ToString（）;


// Tony

这可能会给你一个数据类型的字符串...


string myID = temp.First（）;


或也许


string myID = temp [0];


-

G ??跑安德森

_____
http://www.guffa.com

Hello!

If I have this simple linq construction

var temp = from o in myWorksheetList
where o.ID == workSheetID
select o.subFileID;

This will always give only a singe record in temp which is the result from
selct o.subfileID

If I now want to get the string value from this temp collection what is the
easiest way to do this.

Some thing like
string myID = temp.ToString();

//Tony

解决方案

Tony Johansson wrote:

Hello!

If I have this simple linq construction

var temp = from o in myWorksheetList
where o.ID == workSheetID
select o.subFileID;

This will always give only a singe record in temp which is the result
from selct o.subfileID

If I now want to get the string value from this temp collection what is the
easiest way to do this.

Some thing like
string myID = temp.ToString();

//Tony

That will probably give you a string with the data type...

string myID = temp.First();

or perhaps

string myID = temp[0];

--
G?ran Andersson
_____
http://www.guffa.com

Hello!

This doesn'' work because you get compile error.

//Tony

"G?ran Andersson" <gu***@guffa.comwrote in message
news:ev**************@TK2MSFTNGP02.phx.gbl...

Tony Johansson wrote:

>Hello!

If I have this simple linq construction

var temp = from o in myWorksheetList
where o.ID == workSheetID
select o.subFileID;

This will always give only a singe record in temp which is the result
from selct o.subfileID

If I now want to get the string value from this temp collection what is
the
easiest way to do this.

Some thing like
string myID = temp.ToString();

//Tony

That will probably give you a string with the data type...

string myID = temp.First();

or perhaps

string myID = temp[0];

--
G?ran Andersson
_____
http://www.guffa.com

It should have worked fine if o.subFileID is defined as a string. You did
not say how it was defined. Perhaps: string myID = temp.First().ToString();

"Tony Johansson" wrote:

Hello!

This doesn'' work because you get compile error.

//Tony

"G??ran Andersson" <gu***@guffa.comwrote in message
news:ev**************@TK2MSFTNGP02.phx.gbl...

Tony Johansson wrote:

Hello!

If I have this simple linq construction

var temp = from o in myWorksheetList
where o.ID == workSheetID
select o.subFileID;

This will always give only a singe record in temp which is the result
from selct o.subfileID

If I now want to get the string value from this temp collection what is
the
easiest way to do this.

Some thing like
string myID = temp.ToString();

//Tony

That will probably give you a string with the data type...

string myID = temp.First();

or perhaps

string myID = temp[0];

--
G??ran Andersson
_____
http://www.guffa.com

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