How do I return an array to a calling method in coded ui test c#

Question

I am attempting to create a parse function that takes in a string and returns an array. So far I am having a problem with my array declaration:

var sArray = sfunctions.ParseThis(ctrlValue);
ctrlValue = sArray[0]; // Get the first string from the array
rValue = sNew[1];

I have also tried:

string [] sArray = sfunctions.ParseThis(ctrlValue);

In my old c programming days I could declare an array and it would live outside a function without passing anything but a reference, just not sure how to do that in c# or coded ui test.

Thanks for assistance.

control.ClickCustomControl(parent, "InnerText", "Register-16");

where ctrlValue = "Register-16"

And - other answers:

public Array ParseThis(string sToParse)
{
    char cSplit = '-';
    string[] sNew = sToParse.Split(new char[] { cSplit });
    return sNew;
}

What is the signature of the ParseThis() function? Both samples you posted will work just fine if that function is declared and implemented properly. — Joel Coehoorn
– Joel Coehoorn, Commented Mar 2, 2016 at 2:36
Post the declaration of ParseThis and the value of ctrlValue. — D Stanley
– D Stanley, Commented Mar 2, 2016 at 2:36
public Array ParseThis(string sToParse) { char cSplit = '-'; string[] sNew = sToParse.Split(new char[] { cSplit }); return sNew; } — QADev
– QADev, Commented Mar 2, 2016 at 2:39
control.ClickCustomControl(parent, "InnerText", "Register-16"); — QADev
– QADev, Commented Mar 2, 2016 at 2:41

Andrew · Accepted Answer · 2016-03-02 02:50:42Z

3

If your ParseThis method must return an Array, you should then call sArray.GetValue(0) instead. Or else, simply make that method return a string[] and you can use the [0] indexer.

public Array ParseThis(string sToParse)
{
    return sToParse.Split(new char[] { '-' });
}

Corresponds to:

ctrlValue = sArray.GetValue(0);

And

public string[] ParseThis(string sToParse)
{
    return sToParse.Split(new char[] { '-' });
}

Corresponds to:

ctrlValue = sArray[0];

But you could use the GetValue method as well in this case.

On another topic, you should check the returned object has at least one element before trying to access the first one.

answered Mar 2, 2016 at 2:50

Andrew

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6 Comments

QADev Over a year ago

I have tried to return string[], but get an error even with [0]. I am not sure where you mean to call sArray.GetValue(0)?

Andrew Over a year ago

What error exactly? You should call it in the exact same place you are calling it right now, of course. Maybe if you post more of your code it would be easier to understand the situation.

QADev Over a year ago

code                 <this>   Array sArray = sfunctions.ParseThis2(ctrlValue);                 ctrlValue = sArray.GetValue(0); // Get the first string from the array                 rValue = sArray[1];

<\this>

QADev Over a year ago

Sorry - I don't know how to use the formatter! I tried both suggestions and neither work. Please refer back to my original call. Maybe that is where the problem is?

Andrew Over a year ago

For comments, you just to have to surround your code with the grave accent ``. What type do both your ParseThis methods return? If it returns Array, you must use the GetValue method. I suggest you make it return a string array.

|

D Stanley · Accepted Answer · 2016-03-02 19:16:32Z

0

You should avoid using the Array class directly in your code (unless you're calling its static methods). You should be returning the actual array type instead (string[] in your case)

From MSDN:

The Array class is the base class for language implementations that support arrays. However, only the system and compilers can derive explicitly from the Array class. Users should employ the array constructs provided by the language.

So a more appropriate declaration would be

public string[] ParseThis(string sToParse)
{
    char cSplit = '-';
    string[] sNew = sToParse.Split(new char[] { cSplit });
    return sNew;
}

But you really don't need a function since you could just do

string[] parts = ctrlValue.Parse('-');

edited Mar 2, 2016 at 19:16

answered Mar 2, 2016 at 2:55

D Stanley

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3 Comments

QADev Over a year ago

@D Stanley, code public Array ParseThis(string sToParse) { char cSplit = '-'; string[] sNew = sToParse.Split(new char[] { cSplit }); return string[];// sNew; } code

QADev Over a year ago

Thank you! I updated with your recommendation. <br/> I have been using the single line without the function, but wanted to get the hang of using a called and returned array as I will need it in other places. <br/> Thank you again! Now if I could figure out how to format my comments ;)

D Stanley Over a year ago

@QADev Formatting in comments is very limited. The best you can do for code is surround it with backticks but there's no way to show multiple lines, indent, etc.

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