Hey all I am trying to query for the string number thats in the first position inside my List:
List<string[]> idMainDescriptionIcon = new List<string[]>(){
// [ID] [Main] [Description] "XX[d=day or n=night]"
new string[4] { "200", "Thunderstorm", "thunderstorm with light rain", "11" },
new string[4] { "201", "Thunderstorm", "thunderstorm with rain", "11" },
new string[4] { "202", "Thunderstorm", "thunderstorm with heavy rain", "11" },
new string[4] { "210", "Thunderstorm", "light thunderstorm", "11" },
new string[4] { "211", "Thunderstorm", "thunderstorm", "11" }
};
And the Linq I am using:
List<string> d = idMainDescriptionIcon[0][0]
.Where(x => x.StartsWith("202"))
.Select(x => x)
.ToList();
I am getting an error on the idMainDescriptionIcon[0][0]
stating:
Error CS1061 'char' does not contain a definition for 'StartsWith' and no accessible extension method 'StartsWith' accepting a first argument of type 'char' could be found (are you missing a using directive or an assembly reference?)
The D should have the values of "202", "Thunderstorm", "thunderstorm with heavy rain", "11"
.
And this is where I am stuck at. Not sure how to go about fixing this error?
UPDATE #1
When removing the [0][0] and replacing it with just one [0] this is the return I get:
CodePudding user response:
The problem here is idMainDescriptionIcon[0][0]
, which is referring to a single string here. Iterating over it would be iterating over characters in the string, which is why you get the error 'char' does not contain a definition for 'StartsWith'
What you would need is the following
var d = idMainDescriptionIcon
.Where(x => x[0].StartsWith("202"))
.SelectMany(x => x)
.ToList();
You need to query the entire idMainDescriptionIcon
such that the first element of the inner array starts with "202".
Output