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Index in the Select projection

开发者 https://www.devze.com 2023-02-07 02:11 出处:网络
I would like my index to start from a number count greater than 0 while doing something like this: var dataSource = WebConfigurationHelper.GetSupportedDomainsString().Select((domain, index) =>

I would like my index to start from a number count greater than 0 while doing something like this:

var dataSource = WebConfigurationHelper.GetSupportedDomainsString().Select((domain, index) => 
new { index , Name = domain });

so my output becomes:

index=2 domain=zombieland
index=3 domain=mydomain

Is it开发者_运维技巧 possible to do?


You can adjust it in the Select projection:

var dataSource = WebConfigurationHelper.GetSupportedDomainsString()
     .Select((domain, index) =>  new { Index = index + 2, Name = domain });

The reason my original suggestion of new { index + 2, Name = domain } wouldn't work is that a projection initializer (where you specify just an expression, and let the compiler infer the name) only works when the expression is a "simple name", a "member access" or a "base access".

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