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POquestion about linq select and ToList()
 

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  1. POquestion about linq select and ToList()
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    <p>I have a problem with returning a list by executing a <code>Select</code> LINQ query. This is the query:</p> <pre><code> var data = Repository&lt;EducationString&gt; .Find() .ToList() .Select(p =&gt; new EducationStringModel() { Id = p.Id, Title = p.Title, EducationDegree=p.EducationDegree }) .ToList(); </code></pre> <p>As you can see I used <code>ToList()</code> 2 times. I don't know why but when I delete the first <code>ToList()</code> I see this error, <em>"Index was outside the bounds of the array"</em>, but by having both <code>ToList()</code> there is no problem.</p> <p>Would it help if I said <code>EducationDegree</code> in <code>EducationStringModel</code> is an <code>IList&lt;EducationDegree&gt;</code>?</p> <p>Is there anybody who knows the reason?</p> <p>@Mark :its L2O</p> <p>if u need to see the classes:</p> <p>public class EducationStringModel { private IList _educationDegree = new List(); public IList EducationDegree { get { if (_educationDegree == null) { _educationDegree = new List(); } return _educationDegree; } set { _educationDegree = value; }</p> <pre><code>} public int? Id { get; set; } public string Title { get; set; } </code></pre> <p>}</p> <p>public class EducationString{</p> <p>private string _title; private IList _educationExperiences; private IList _educationDegree;</p> <pre><code>virtual public string Title { get { return _title; } set { _title = value; } } virtual public IList&lt;EducationExperience&gt; EducationExperiences { get { if (_educationExperiences == null) { _educationExperiences = new List&lt;EducationExperience&gt;(); } return _educationExperiences; } set { _educationExperiences = value; } } virtual public IList&lt;EducationDegree&gt; EducationDegree { get { if (_educationDegree == null) { _educationDegree = new List&lt;EducationDegree&gt;(); } return _educationDegree; } set { _educationDegree = value; } } </code></pre> <p>}</p>
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    1. COWhat does Find() return?
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      1. USAnders Fjeldstad
    2. COYour find method should return IEnumerable or IList ...
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      1. USSaeed Amiri
 

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