Did you add the Select() after the Where() or before? You should add it after, because of the concurrency logic: 1 Take the entire table 2 ... ... <看更多>

# Language Extensions. 為了使LINQ可以更加便捷的使用而將C#擴充了以下的功能: # Query Expression(Query Syntax). 查詢 ... ... <看更多>

var lines = new[]. {. "Line1", "Line2", "Line3". }; var query = lines.Select((line, index) => new. {. Prop = string.Format("Address{0}", index + 1),. ... <看更多>

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You can simply combine the conditions inside the FirstOrDefault() like PersonResultList = PersonResultList .Where(pr => PersonList .FirstOrDefault(p => pr. ... <看更多>