Hi folks. In the topic I will illustrate how to pass
array of objects to WebService and how to deal with it in your WebService. suppose we have this javascript code :
<script language="javascript" type="text/javascript">
var people = new Array();
function person(playerID, playerName, playerPPD) {
this.PlayerID = playerID;
this.PlayerName = playerName;
this.PlayerPPD = parseFloat(playerPPD);
}
function saveSignup() {
addSomeSampleInfo();
WebService.SaveSignups(people, SucceededCallback);
}
function SucceededCallback(result, eventArgs) {
var RsltElem = document.getElementById("divStatusMessage");
RsltElem.innerHTML = result;
}
function OnError(error) {
alert("Service Error: " + error.get_message());
}
function addSomeSampleInfo() {
people[people.length++] = new person(123, "Person 1 Name", 10);
people[people.length++] = new person(234, "Person 2 Name", 20);
people[people.length++] = new person(345, "Person 3 Name", 10.5);
}
</script>
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
poeple :is the
array that we want to send to the WebService.
person :The function –constructor- that we are using to create object to our
array.
SucceededCallback : This is the callback function invoked if the Web service succeeded.
OnError : this is the Error callback function so any errors that occur when the Web Service is called will trigger this function.
saveSignup : This function used to call the WebSercie Method (SaveSignups), the first parameter that we pass to the WebService and the second is the name
of the callback function.
Here is the body
of the Page :<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="WebService.asmx" />
</Services>
</asp:ScriptManager>
<input type="button" id="btn1" onclick="saveSignup()" value="Click" />
<div id="divStatusMessage">
</div>
</form>
</body>
</html>
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
Then main thing is the ServiceReference and it’s path "WebService.asmx” , this is the Web Service that we are using in this example.
A web service will be used to receive the javascript
array and handle it in our code :using System;
using System.Web;
using System.Web.Services;
using System.Xml;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
using System.Data.SqlClient;
using System.Collections.Generic;
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class WebService : System.Web.Services.WebService
{
[WebMethod]
public string SaveSignups(object [] values)
{
string strOutput="";
string PlayerID="", PlayerName="", PlayerPPD="";
foreach (object value in values)
{
Dictionary<string, object> dicValues = new Dictionary<string, object>();
dicValues = (Dictionary<string, object>)value;
PlayerID = dicValues["PlayerID"].ToString();
PlayerName = dicValues["PlayerName"].ToString();
PlayerPPD = dicValues["PlayerPPD"].ToString();
strOutput += "PlayerID = " + PlayerID + ", PlayerName=" + PlayerName + ",PlayerPPD= " + PlayerPPD +"<br>";
}
return strOutput;
}
}
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
The first thing I implement System.Collections.Generic Namespace, we need it to use the Dictionary Class.
you can find in this code that I pass the javascript
objects to
array of object called values, then we need to deal with every separate Object and implicit it to Dictionary<string, object> .
The Dictionary Represents a collection
of keys and values Dictionary<TKey, TValue>
TKey : The type
of the keys in the dictionary
TValue : The type
of the values in the dictionary.
For more information about Dictionary check this link : http://msdn.microsoft.com/en-us/library/xfhwa508(VS.80).aspx
Now we can get the value for every element because we have mapping from a set
of keys to a set
of values, the keys
of this example is : PlayerID ,PlayerName,PlayerPPD, this created from the original object person.
Ultimately,this Web method return the values as string, but the main idea
of this method to show you how to deal with
array of object and convert it to Dictionary<string, object> object , and get the values
of this Dictionary.
Hope this helps,
