LINQ syntax

vkEE

Hi, For some reason no matter what I try, this syntax is erroring out.

var dispQuestions = (from m in demographicList.Where(o => o.customertype=="Patient")).ToList();

It complains having a select or group by. I tried this as well, and it still errors.

var dispQuestions = (from m in demographicList.Where(o => o.customertype=="Patient")).Select().ToList();

any thoughts?

thatraja

vkEmerson wrote:

I tried this as well, and it still errors.

What's that? always include those details in your questions. Besides you have posted your question in wrong forum. Try LINQ forum[^]. Now don't repost this question there, leave it now. Hereafter choose right forum.

thatraja

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vkEE

I could not find the LINQ forum, under the discussion. I will book mark the linq forum for future. if I try to get

dispQuestions.Count

, there is an error message,

Error 5 Operator '>' cannot be applied to operands of type 'method group' and 'int'

Syntax wise, am I missing the format? I am used to ADO.Net, and new to Linq. Trying to figure the various way to write it. Thanks.

Richard Deeming

The problem here is that you're mixing up the query syntax and the method syntax[^]. When the compiler is complaining that you're missing a select, it means that a query-syntax query must end with a select statement, but you've tried to fix it by adding a call to the Select method. Your query could be written in one of two ways:

// Query syntax:
var dispQuestions = (from m in demographicList where m.customertype == "Patient" select m).ToList();

// Method syntax:
var dispQuestions = demographicList.Where(o => o.customertype == "Patient").ToList();

I tend to prefer the second option, but it's a purely aesthetic choice.

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Bernhard Hiller

Try dispQuestions.Count**()** instead.