Linq查询列出VB.NET [英] Linq query to list VB.NET

问题描述

Dim query = From o In myContainer.MyObjects Select o.MyStringProperty Distinct

Dim myProperties As List(Of String) = query.ToList????? 'no way!!!'

查询"类型为IEnumerable(字符串)

"query" type is IEnumerable(Of String)

我试图直接将query用作(基础设施)组合框的数据源，但它抛出NullReferenceException，因此我决定将其转换为字符串列表，以成为更经典"的数据源.

I tried to use the query directly as a DataSource of a (infragistic) combobox, but it throws me NullReferenceException, so I decided to convert it to a listof strings, to be a more "classical" datasource.

Dim values As List(Of String) = query.AsQueryable().ToList()

也不起作用:类型'System.Collections.Generic.List(Of System.Linq.IQueryable(Of String))'的值不能转换为'System.Collections.Generic.List(Of String )'.

推荐答案

最后，使用旧方法解决了:)

Finally, solved with good old method : )

  Dim values As New List(Of String)

  For Each item In query
    values.Add(item)
  Next item

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