convert string array to string

Question

I would like to convert a string array to a single string.

string[] test = new string[2];
test[0] = \"Hello \";
test[1] = \"World!\";

I wou

Answer 1

I used this way to make my project faster:

RichTextBox rcbCatalyst = new RichTextBox()
{
    Lines = arrayString
};
string text = rcbCatalyst.Text;
rcbCatalyst.Dispose();

return text;

RichTextBox.Text will automatically convert your array to a multiline string!

Answer 2

    string ConvertStringArrayToString(string[] array)
    {
        //
        // Concatenate all the elements into a StringBuilder.
        //
        StringBuilder strinbuilder = new StringBuilder();
        foreach (string value in array)
        {
            strinbuilder.Append(value);
            strinbuilder.Append(' ');
        }
        return strinbuilder.ToString();
    }

Answer 3

In the accepted answer, String.Join isn't best practice per its usage. String.Concat should have be used since OP included a trailing space in the first item: "Hello " (instead of using a null delimiter).

However, since OP asked for the result "Hello World!", String.Join is still the appropriate method, but the trailing whitespace should be moved to the delimiter instead.

// string[] test = new string[2];

// test[0] = "Hello ";
// test[1] = "World!";

string[] test = { "Hello", "World" }; // Alternative array creation syntax 
string result = String.Join(" ", test);