Assign array value inside object initializer in c#

Question

I have a class as below.

public class PurgeRecord
{
    public int Index { get; set; }
    public string Source { get; set; }
    public int PurgeFileID { get; set; }
    public string AuthorisationID { get; set; }
    public string RecordSystem { get; set; }
    public string KeyName { get; set; }
    public string[] KeyValues { get; set; }
    public bool IsValid { get; set; }
    public string Action { get; set; }
    public string ErrorDetail { get; set; }
    public string FileName { get; set; }
}

I am getting some string values separated by '|' into string array and lopping over it as follows.

string[] test = Convert.ToString(values[5]).Split('|');
foreach (string key in test)
{
    purgeRecord = new PurgeRecord()
    {
        KeyValues = key,
        IsValid = true,
        FileName = "XYZ"
    };
    lstPurgeRecords.Add(purgeRecord);
}

But I am getting an error on key as cannot convert string to string[] implicitly. I tried many ways and tried googling as well but no luck.

Please help.

The problem isn't only with the code, the problem is that we don't understand what you're trying to do. Why did you try placing a string value into an array variable? What was the expected outcome? — Lasse V. Karlsen, Jan 17 '18 at 13:55
KeyValues is of string[] datatype and you are assigning that to a string value key — Maddy, Jan 17 '18 at 14:04

Ehsan Ullah Nazir · Answer 1 · 2018-01-17T13:56:19.153

0

Split itself returns String[]

Splits a string into substrings that are based on the characters in an array.

Its Syntax

public string[] Split(params char[] separator)

Simply update your code

from

string[] test = Convert.ToString(values[5]).Split('|');

with

string[] test = values[5]).Split('|');

edited Jan 17 '18 at 13:56

answered Jan 17 '18 at 13:50

Ehsan Ullah Nazir

1,827
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score 0 · Answer 2 · answered Jan 17 '18 at 13:50

0

You can simply put it inside a string[] like this:

KeyValues = new string[] { key }

Or even shorter format:

KeyValues = new [] { key }

answered Jan 17 '18 at 13:50

DavidG

113,891
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score 0 · Accepted Answer · answered Jan 17 '18 at 14:03

The KeyValues property type is string array, when you are trying to initialize a PurgeRecord instance you are trying to insert a string into a string[].

So this is what you should do:

//Every object instance in C# have the function 'ToString'.
string[] test = values[5].ToString().Split('|');

foreach (string key in test)
{
    purgeRecord = new PurgeRecord()
    {
        //Create an array to insert in the values, but probably this is the KeyName
        KeyValues = new[] { key },
        IsValid = true,
        FileName = "XYZ"
    };
    lstPurgeRecords.Add(purgeRecord);
}

There is a nice way to do with Linq too:

lstPurgeRecords = values[ 5 ]
                    .ToString()
                    .Split( '|' )
                    .Select( key => new PurgeRecord 
                    {
                        KeyValues = new[] { key },
                        IsValid = true,
                        FileName = "XYZ"
                    } );

Assign array value inside object initializer in c#

3 Answers3