[英]cannot convert from Dictionary to IDictionary
我正在尝试使用方法创建接口
void Import(int id, IDictionary<int, IDictionary<int, string>> items);
然后像这样调用此方法
Dictionary<int, Dictionary<int, string>> items = viewModel.Items
.GroupBy(t => t.Number)
.ToDictionary(t => t.Key, t => t.ToDictionary(x => x.LanguageId, x => x.Translation));
Import(id, items);
我期望它应该可以工作但是出现错误
cannot convert from 'System.Collections.Generic.Dictionary<int, System.Collections.Generic.Dictionary<int, string>>' to 'System.Collections.Generic.IDictionary<int, System.Collections.Generic.IDictionary<int, string>>'
为什么我在这里不能使用接口IDictionary? 我应该手动投放吗?
更改您的分配类型。
Dictionary<int, IDictionary<int, string>> items = viewModel.Items
.GroupBy(t => t.Number)
.ToDictionary(t => t.Key, t => (IDictionary<int, string>) t.ToDictionary(x => x.LanguageId, x => x.Translation));
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