C# - Send A Variable Or Array From Javascript?
Feb 28, 2011
I would to know how to pass variables. I have a variable in javascript but I dont know how to pass it to a textbox. I have read it is so easy using ajax, but I dont know how to use it. I believed this was just for not to have reload. Well, then how do I do it? I read I must use get and post, but I dont know how to use it.. for example I have the code:
function guardar() {
var completo = "hola mundo";
}
How do I get the variable completo to pass it in a textbox?
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function prepare();
{
document.getElementById('seatsArray').value = seatsArray.join();
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var coordinates = document.getElementById("image");
coordinates.onclick = function(e) {
e = e || window.event;
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e.posX = e.pageX;
e.posY = e.pageY;
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var scr = {x:0,y:0},
object = e.srcElement || e.target;
//legendary get scrolled
for (;object.parentNode;object = object.parentNode) {
scr['x'] += object.scrollLeft;
scr['y'] += object.scrollTop;
}
e.posX = e.clientX + scr.x;
e.posY = e.clientY + scr.y;
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if(document.getElementByID("backnave").checked) {
desc = "BN, "+desc;
} else if(document.getElementByID("middlenave").checked) {
desc = "MN, "+desc;
} else if(document.getElementByID("frontnave").checked) {
desc = "FN, "+desc;
}
if(document.getElementById('wheelchairseat').checked) {
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desc = "Wheelchair "+desc;
}
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}
</script>
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<script runat="server">
protected void Page_Load(object sender, EventArgs e)
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string path = Server.MapPath(".")+"/"+Request.Form["file_name"] + ".txt";
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using (StreamWriter sw = File.CreateText(path))
{
sw.WriteLine(Request.Form["seatsArray"]);
sw.WriteLine("");
}
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using (StreamReader sr = File.OpenText(path))
{
string s = "";
while ((s = sr.ReadLine()) != null)
{
Response.Write(s);
}
}
}
</script>
The name of the text file is correct according to what the user put in the form "file_name". As you can see I made seatsArray a hidden form object so thats what the ASP.NET is trying to call.
Is something in the javascript in the wrong order or something? Because I just can't get it to fill up that text file.
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How Can i fill an array that defined in javascript with c# in behind code?
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I know that I can declare an array using the following method, but assume there is an easier way.
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elem[1] = 2;
elem[2] = 3;
and so on......
Is there a short cut to simply adding the numbers 0 -20 to an array, and is there a shotcut to adding the 20 nuumbers minus a few such as 3, 9, and 17?
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