Fill javascript array with c#

Question

How Can i fill an array that defined in javascript with c# in behind code?

EDIT:

here is my code

protected void Page_Load(object sender, System.EventArgs e)
{
string[] locations = new string[] {
 "Las Vegas",
 "Los Angeles",
 "Tampa",
 "New York",
 "s",
 "sss"
};
string jsArray = GetJSArrayForVBArray(locations);
this.ClientScript.RegisterArrayDeclaration("usernames", jsArray);
}
private string GetJSArrayForVBArray(string[] vbArray)
{
StringBuilder myResult = new StringBuilder();
foreach (string item in Constants.vbArray) {
 {
 myResult.Append(",'" + item + "'");
 }
}
if ((myResult.Length > 0)) {
 return myResult.ToString().Substring(1);
} else {
 return "";
}
}

Javsacript:

<script type="text/javascript">
 $(function () {
 var usernames = new Array();
 $("#tags").autocomplete({
 source: usernames
 });
 });
</script>

• Jaroslav Jandek: Generate a javascript code block to do it. someArray.push(someValue).
• Tomalak: Also, check if you can accept a few answers to your earlier questions. Asking questions and not coming back to them is rude.
• Shahin: what is the problem with syntax highlighter? @tomalak ??????????? @ Jaroslav Jandek : thanks. give me a link for more information or an example @oded edited
• Tomalak: @shaahin: I don't think that there are simpler words to explain it. Read my comment again if you don't understand it.
• Shahin: @Tomalak: I did that. Thanks For your advice :) .

Answer 1

use the JavaScriptSerializer class. Something like the following should do it

protected void Page_Load(object sender, System.EventArgs e)
{
 string[] locations = new string[] {
 "Las Vegas",
 "Los Angeles",
 "Tampa",
 "New York",
 "s",
 "sss"
 };
 JavaScriptSerializer serializer = new JavaScriptSerializer();
 string jsArray = serializer.Serialize(locations);
 this.ClientScript.RegisterClientScriptBlock(this.GetType(), "locations", jsArray, true);
}

• Shahin: Thanks a lot. how can i use it in my aspx page?
• Shahin: I cant use array in aspx page. please help me. i used this code. <script type="text/javascript"> $(function () { var locations= new Array(); $("#tags").autocomplete({ source: locations }); }); </script>
• Russ Cam: @shaahin - what doe my code output to the page? There's no need to declare a new JavaScript array to hold the values that we are outputting from the server side, we just need to assign what we output to a variable and then assign that variable value to the source property of the object that you're passing to autocomplete
• Russ Cam: Alternatively, you could write the result of calling serialize straight into the aspx markup, using <%= ... %> tags

Answer 2

Sounds like a job for JSON. Note that if you scroll down on that page you'll see a number of resources for utilizing JSON in C#. It's really a great way to transfer data back and forth between various platforms/languages.

• Jeffrey Blake: Well, check out the links listed on that page. Most of the work for 'converting' is done for you by one of those packages, depending on your implementation. Specifically, it becomes a matter of basically calling JsonEncode/JsonDecode (or using helper functions to work with specific collection types) with the code at: techblog.procurios.nl/k/618/news/view/14605/14863/…