This question already has answers here:
Unity C# ArgumentOutOfRangeException: Argument is out of range. Parameter name: index [closed]
(3 answers)
Closed 4 years ago.
This was working befor but its stopped and i don't know why this message just keeps coming up:
ArgumentOutOfRangeException: Argument is out of range. Parameter name:index
At a guess, you're not populating the list SpawnPrefabs or, at least, not populating it enough to have an element at one of the indexes that you're referencing.
Related
This question already has answers here:
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
(5 answers)
Closed 1 year ago.
do not be tired
I defined a 1000-element presentation in the Windows application form space and used it in various areas of the program, but unfortunately I encounter the following error. Thank you for your help:
enter image description here
I have defined this variable as follows :
enter image description here
Indexes in arrays start with 0. So array with 1000 elements will have indexes from 0 to 999. It throws at the 1000th index. As a solution, you can change your loop to have following condition: i < 1000 instead.
This question already has answers here:
How to get the type of T from a member of a generic class or method
(17 answers)
What is '1 in Collection type Name
(1 answer)
Closed 1 year ago.
Suppose I have a "Type mytype", and if I do "mytype.ToString()", I get "System.Collections.Generic.List`1[Example1.Employee]", how do I get the list item type, which is "Example1.Employee"? Do I have to parse this string to get this list item type? Is there a more elegant way, such as "mytype.ItemType"?
Also, why is there a "`1" appendix at the end of "System.Collections.Generic.List`1"?
And, why is there a "`2" at the end of "System.Collections.Generic.Dictionary`2"?
Simple:
Type element = list.GetType().GenericTypeArguments[0]
And the "`1" just indicates the number of generic parameters.
This question already has answers here:
IEnumerable doesn't have a Count method
(5 answers)
Closed 4 years ago.
I have an observable collection and I'm trying to count the number of objects where "IsActive" = true. This looks like it should work, but I get an error saying "Count can't be used as a method". Anyone know how to do this?
int count = createAndDisplayViewModel.AvailableMonitorsForAddOC.Count(p => p.IsActive);
You are missing using System.Linq in the top of the file.
The misleading error message ("Count can't be used as a method") is given because the collection has a Count property, and it does not know about the extension method.
This question already has answers here:
C# compiler error: "not all code paths return a value"
(9 answers)
Closed 5 years ago.
There is a return path problem I don't know what is the error reason. Actually the program structure is simple and clear
You have a return statement only in case you have items to iterate over in each one of the loops.The compiler doesn't check if this block of code is necessarily executed thus the compile error.
This question already has answers here:
Programmatic equivalent of default(Type)
(14 answers)
Closed 8 years ago.
So, I need to retrieve all properties of an instance which currently have a value that matches the default value of their respective type. Something along the lines of
GetType().GetProperties().Where(x =>
x.GetValue(this).Equals(default(x.PropertyType)));
This obviously doesn't work because it seems 'x' cannot be resolved anymore at this point. What could I do?
The problem is slightly different. You cannot pass a runtime instance of Type to default. Your problem can be simplified to this:
var type = typeof (string);
var defaultValue = default(type); // doesn't work
That doesn't work. Instead, you want to get the default value at run time, which has been answered by this question.