I have a WebGrid in a lot of my pages that list products. And I have the following code that adds the item to the database that the user clicked on:
public bool ToCart(int userId,
string partNumber,
string productDescription,
int units,
int boxes,
decimal unitPrice,
decimal boxPrice,
decimal lineTotal,
string orderId,
DateTime dateTime,
bool isBoxed)
{
bool addedToCart = false;
try
{
Cart cart = new Cart()
{
UserId = userId,
PartNumber = partNumber,
Description = productDescription,
Units = units,
Boxes = boxes,
UnitPrice = unitPrice,
BoxPrice = boxPrice,
LineTotal = lineTotal,
OrderId = orderId,
OrderDate = dateTime,
IsBoxed = isBoxed
};
database.AddToCarts(cart);
database.SaveChanges();
addedToCart = true;
}
catch (Exception exception)
{
addedToCart = false;
Console.Write(exception.Message);
}
return addedToCart;
}
The call to this method, looks like:
ToCart(WebSecurity.CurrentUserId, PartNumber, ProductDescription, Units, Boxes, UnitPrice, BoxPrice, LineTotal, OrderId, DateTime.Now, IsBoxed)
Now I want to make this into an AJAX post. But I don't want anything fancy. I would just like to have the normal WaitCursor or BusyCursor show up while this is being added to the cart, and to display a <p>item added to cart</p>
at the top of the page, when it has been added to the cart.
How can I accomplish this when a user clicks on an item they wish to add to their cart?
I suggest you use the BlockUI plugin for that:
$('.addToCart').click(function(){
$.ajax({
before: function(){$('body').block()} ,//will be called before the ajax call begins
complete: function(){$('body').unblock()}, //will be called when ajax completes, whether with error or success
//on success, append message to top
success: function(){
var message = "<p>item added to cart</p>";
$(message).appendTo('.topDiv');
}
});
});
Create a div
(in my example below I gave mine an id
of loadingdiv ) containing anything you like (usually an animated GIF - look at http://ajaxload.info ). Then, using jQuery, you can do this:
<div id="loadingdiv"><img src="spinning-image.gif" /></div>
$("#loadingdiv").
hide().
ajaxStart(function() { $(this).show(); }).
ajaxStop(function() { $(this).hide(); });
or if you just want to change the cursor do this:
$(document).
ajaxStart(function() { $(document).css("cursor", "wait"); }).
ajaxStop(function() { $(document).css("cursor", "default"); });
In Your code add:
using System.Web.Services;
and create method that You want to call with AJAX, add WebMethod attribute to the method:
[WebMethod]
public static string CallAJAX(string Iwant)
{
if (string.IsNullOrEmpty(Iwant)) throw new Exception("What You want ?");
return "One " + Iwant + " for You";
}
Thats all the C# part. Now to call it from Your page add script manager to the page form:
<asp:ScriptManager ID="ScriptManager" runat="server" EnablePageMethods="true" />
Add JavaScript methods:
<script type="text/javascript">
function CallAJAX() {
var Iwant = 'ice cream';
PageMethods.CallAJAX(Iwant, OnSucceeded, OnFailed);
//set wait cursor
jQuery("body").css("cursor", "progress");
}
function OnSucceeded(result) {
alert(result);
//set cursor to normal
jQuery("body").css("cursor", "auto");
}
function OnFailed(error) {
alert(error.get_message());
//set cursor to normal
jQuery("body").css("cursor", "auto");
}
</script>
With PageMethods.CallAJAX(Iwant, OnSucceeded, OnFailed); You call server C# method and attach response events. Then You can use it with ASP.NET button for example:
<asp:Button runat="server" Text="ajax call" OnClientClick="CallAJAX(); return false;" />
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