How should an array be passed to a Javascript function from C#?

Question

I use a WebBrowser object from WPF and I\'m calling some Javascript code in the page loaded in the browser like this:

myWebBrowser.InvokeScript(\"myJsFunc\", new         


        

Answer 1

You need to convert the array to a JS array first, something that looks like this:

["John", "Bob", "Sue"] // literal array

Two examples follow:

StringBuilder sb = new StringBuilder();
string[] stringArray = bar.ToArray();

//Build the JS array.
sb.Append( "[");
for (int i = 0; i < stringArray.Length; i++)
{
    sb.AppendFormat( "'{0}', ", stringArray[i] );

}
sb.Append( "]");


// Now send the array to the JS function.
myWebBrowser.InvokeScript("myJsFunc", new object[] { foo.Text, sb.ToString() });

You may want to remove the trailing , as well. Don't forget to import the appropriate libraries for StringBuilder, which I think is System.Text.StringBuilder;

or use, example two:

string[] stringArray = bar.ToArray();

// or simpler to use string join.
string jsArray = "[" + String.Join( ",", stringArray ) + "]";
//
myWebBrowser.InvokeScript("myJsFunc", new object[] { foo.Text, jsArray });