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 = new Array();
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; }
.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>
.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 explicit 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,
