What is causing me to only receive the first element in a JavaScript array that is being passed from Silverlight?

I'm struggling to pass an array of strings from a Silverlight application to a Javascript function. Despite my efforts, I am only able to retrieve the first element of the array instead of the entire array. Here's a simple representation of the issue:

Silverlight:

 string[] Names = new string[5];
 Names[0] = "Test1";
 Names[1] = "Test2";
 Names[2] = "Test3";
 Names[3] = "Test4";
 Names[4] = "Test5";

 HtmlPage.Window.Invoke("PopulateNames", Names);

Javascript:

function PopulateNames(names)
{
    window.alert(names);
}

With the current code, I can only see "Test1" displayed, or "undefined" if I modify window.alert(names) to window.alert(names[0]).

If anyone has insight on how I can successfully pass all elements of the array to the Javascript function, please share your knowledge.

Answer №1

When utilizing the Invoke method, it is essential to remember that it requires an array of parameters.
For this reason, each of your five strings must be passed as individual string parameters to the function.

In order to properly pass the values, you should structure them in a nested array format like demonstrated below:

HtmlPage.Window.Invoke("PopulateNames", new object[] { Names });

Answer №2

One interesting aspect of a JavaScript function object is its ability to access arguments passed to it. By using the arguments object, you can retrieve the entire array of parameters provided. Next time you're debugging your script, take a look at how the argument array works within a function. Remember, when accessing the argument array using something like 'function(myargs[])', the variable myargs will point to the first element in the input array.

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