How can I assign empty to string array in c#?
string [] stack; //string array
how to assign
stack = ""; //this statement gives error cannot implicitly convert to type string to string []
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3You can't. An array is not a string. Do you mean put an empty string in each element of the array?John3136– John31362012-10-01 05:29:42 +00:00Commented Oct 1, 2012 at 5:29
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5 Answers
You cannot use:
string[] stack = "";
Since stack in here is an array of string. If you want to initialize empty string for each elements in array, you can use LINQ with Enumerable.Range to get the result, assume there are 10 items in here:
string[] stack = Enumerable.Range(0, 10)
.Select(i => string.Empty)
.ToArray();
Comments
This will create an array with three empty strings.
string[] arr1 = new string[] { "", "", "" };
or if you only need one:
string[] arr1 = new string[] { "" };
or another example (with 3 strings):
string[] arr1 = new string[3];
arr1[0] = "";
arr1[1] = "";
arr1[2] = "";
Comments
Just iterate over the array like this:
int length = stack.Length;
for(int i = 0; i < length; i++)
{
stack[i] = string.Empty;
}
Comments
If you just want to create empty array of string[] object.
string [] stack = new string[]{};
Comments
Now you can use string[] stack = ["", "", ""];.
The [] at right-hand-side is called "collection expression".
You can initialize any collection type with this syntax sugar. Like:
List<Foo> Foos = []; // An empty list.
