Cannot apply indexing with [] to an expression of type 'System.Collections.Specialized.NameValueCollection'

Cannot apply indexing with [] to an expression of type 'System.Collections.Specialized.NameValueCollection'

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Cannot apply indexing with [] to an expression of type 'System.Collections.Specialized.NameValueCollection'
Tag : chash , By : John
Date : November 26 2020, 01:01 AM

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Cannot apply indexing with [] to an expression of type 'System.Collections.Generic.IEnumerable<>

Tag : chash , By : user121501
Date : March 29 2020, 07:55 AM
it helps some times Because it's not.
Indexing is covered by IList. IEnumerable means "I have some of the powers of IList, but not all of them."

NameValueCollection not available from System.Collections.Specialized

Tag : .net , By : Valentine
Date : March 29 2020, 07:55 AM
I wish this helpful for you NameValueCollection is not available for Windows Phone. You can use Dictionary instead.

Cannot apply indexing with [] to an expression of type 'System.Collections.Generic.ICollection<int> in mvc control

Tag : chash , By : msg
Date : March 29 2020, 07:55 AM
wish help you to fix your issue , Just convert it to an array:
var s = SingleStay.ToArray();
 var s = SingleStay;
 int i = 0;
 foreach (var cal in s)
    //do your stuff (Note: if you use 'continue;' here increment i before)

Why can't I return a value of type System.Collections.Specialized.NameValueCollection?

Tag : .net , By : Fahad
Date : March 29 2020, 07:55 AM
I wish this help you Powershell is being "helpful" here and unwrapping your collection for you the same way it unwraps arrays/etc. as they enter the pipeline.
You need to "prevent" that by adding a layer of array/wrapping for powershell to unwrap instead.

cannot convert from 'string' to 'System.Collections.Specialized.NameValueCollection'

Tag : chash , By : user160048
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , the error is pretty clear. UploadValues takes a NameValueCollection not a string https://msdn.microsoft.com/en-us/library/9w7b4fz7(v=vs.110).aspx
You code should be
var nvc = new NameValueCollection();

nvc.Add("INPUT_DATA", encodedJson);

crudoutput = wc.UploadValues(uri, nvc);
crudoutput = wc.UploadString(uri, "INPUT_DATA=" + encodedJson);
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