I have this JS function :
var i = 0;
for (i = 0; i < myArray.length; i++) {
alert(myArray[i]);
}
but myArray[] is create on server side with c# :
ArrayList myArray = new ArrayList();
protected void Page_Load(object sender, EventArgs e)
{
foreach (MyObject myobject in MyObjects)
{
myArray.Add(myobject.Description);
}
}
so, how can I "pass" the C# array to Javascript? Or I need to print the whole javascript code on server side and send it to the server?
You can populate javascript array from serverside by using RegisterArrayDeclaration(arrayName, arrayValue) method.
In Cs file
RegisterArrayDeclaration("FavoriteNumbers", "1")
RegisterArrayDeclaration("FavoriteNumbers", "2")
RegisterArrayDeclaration("FavoriteNumbers", "3")
In javascript
<script language="javascript">
<!--
var FavoriteNumbers = new Array(1, 2, 3);
// -->
</script>
You could create json object(array) that would be serialized and sent to client where you can work with it as with Javascript array.
You can use
using System.Web.Script.Serialization;
JavaScriptSerializer serializer = new JavaScriptSerializer();
var output = serializer.Serialize(your_anon_object);
from
System.Web.Extensions.dll
You can serialize your C# array as JSON. You can read in detail about it here. Also I would suggest using List<> instead of ArrayList.
You can use PageMethods to access functions in your code behind. Simply create a function to access your property.
Example here, http://www.dotnetspider.com/resources/21456-Page-Method.aspx
at before...
1)I will put a hidden in the page...
2) general a string like
"['a','b','c']"
into the hidden at .cs
3) cast to the array from the string at javascript
var arr = eval(hiddenvalue);
4) use it as a array...
