[英]Problem in populating a dictionary using Enumerable.Range()
If I do 如果我做
for (int i = 0; i < appSettings.Count; i++)
{
string key = appSettings.Keys[i];
euFileDictionary.Add(key, appSettings[i]);
}
It is working fine. 它工作正常。
When I am trying the same thing using 当我尝试使用同样的东西时
Enumerable.Range(0, appSettings.Count).Select(i =>
{
string Key = appSettings.Keys[i];
string Value = appSettings[i];
euFileDictionary.Add(Key, Value);
}).ToDictionary<string,string>();
I am getting a compile time error 我收到编译时错误
The type arguments for method 'System.Linq.Enumerable.Select(System.Collections.Generic.IEnumerable, System.Func)' cannot be inferred from the usage. 无法从用法推断出方法'System.Linq.Enumerable.Select(System.Collections.Generic.IEnumerable,System.Func)'的类型参数。 Try specifying the type arguments explicitly.
尝试显式指定类型参数。
Any idea? 任何的想法?
Using C#3.0 使用C#3.0
Thanks 谢谢
Enumerable.Range(0, appSettings.Count).Select(i =>
new
{
Key = appSettings.Keys[i],
Value = appSettings[i]
})
.ToDictionary(x => x.Key, x => x.Value);
Enumerable.Range(0, appSettings.Count)
.ToDictionary(
i => appSettings.Keys[i],
i => appSettings[i]);
Thanks I got the answer 谢谢,我得到了答案
Enumerable.Range(0, appSettings.Count).ToList().ForEach(i =>
{
euFileDictionary.Add(appSettings.Keys[i], appSettings[i]);
});
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