Cannot implicitly convert type 'System.Array' to 'string[]' in windows form

Question

I have a function (function1) in my winforms app(c#) that return an array

inside the function1

public array function1(string value)
{
string[] array = new string[12];
     //assigning values to the array elements....
retrun array;
}

and i call this function like this

string id="Some id";
string[] array2 = new string[12];
array2=this.function1(id);

but it gives me error

Cannot implicitly convert type 'System.Array' to 'string[]'. An explicit conversion exists (are you missing a cast?)

please experts help me !

I can't get how it even came to this: error CS0246: The type or namespace name `array' could not be found. — Andrey
– Andrey, Commented Mar 3, 2013 at 16:21
An "array" as returned by function can be an array of anyuthing; however array2 can ONLY hold references to an array of string. Hence the error. Change the return type of function to string[]. — Pieter Geerkens
– Pieter Geerkens, Commented Mar 3, 2013 at 16:21

Matthew · Accepted Answer · 2013-03-03 16:19:25Z

7

Change

public array function1(string value)

to

public string[] function1(string value)

And in your example of usage, you do not need to initialize your array to new string[12] before hand, as your function returns a new array anyway.

answered Mar 3, 2013 at 16:19

Matthew

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Sleiman Jneidi · Accepted Answer · 2013-03-03 16:20:21Z

2

The signature of function1 should be public string[] function1(string value). The return type array doesn't match the variable of type string[]

answered Mar 3, 2013 at 16:20

Sleiman Jneidi

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Alina B. · Accepted Answer · 2013-03-03 16:26:10Z

1

This works, but not sure what the problem is:

public Form1()
{
    InitializeComponent();
    string id = "Some id"; 
    string[] array2 = new string[12]; 
    array2 = this.function1(id);
}

public string[] function1(string value)
{
    string[] array = new string[12];
    array[0] = value; // for example
    return array;
}

answered Mar 3, 2013 at 16:26

Alina B.

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