Subscribe <-- What everyone should be doing.
Download WMV <-- The old style way of doing it.
Download MP4 for Ipod and Zune <-- ditto
Download MP3 <-- ditto
Original url: http://aspnetpodcast.com/CS11/blogs/asp.net_podcast/archive/2007/09/21/asp-net-podcast-show-101-asp-net-ajax-futures-data.aspx
Show Notes:
Web.config additions:
<system.web.extensions>
<
scripting><webServices>
<
jsonSerialization><converters>
<
add name="DataSetConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataSetConverter, Microsoft.Web.Preview"/><add name="DataRowConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataRowConverter, Microsoft.Web.Preview"/> <add name="DataTableConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataTableConverter, Microsoft.Web.Preview"/>
</
converters>Web Service Code
using
System;
using
System.Collections;
using
System.ComponentModel;
using
System.Data;
using
System.Linq;
using
System.Web;
using
System.Web.Script.Services;
using
System.Web.Services;
using
System.Web.Services.Protocols;
using
System.Xml.Linq;
using
Microsoft.Web.Preview.Services;/// <summary>
///
Summary description for WebService
///
</summary>[WebService(Namespace = "http://tempuri.org/")]
[
WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[
ScriptService]
public
class WebService : DataService
{
public WebService()
{
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]public string HelloWorld()
{
return "Hello World";
}
[
WebMethod][DataObjectMethod(DataObjectMethodType.Select)]public DataSet GetValues(int i)
{
DataSet ds = new DataSet();DataTable dt = new DataTable();
DataRow dr;dt.Columns.Add(new DataColumn("Name"));dt.Columns.Add(new DataColumn("ID", Type.GetType("System.Int32")));
dr = dt.NewRow();
if (i % 2 == 0)
{
dr[
"Name"] = "Wally McClure";dr["ID"] = 1;
}
else
{
dr["Name"] = "Paul Glavich";dr["ID"] = 2;
}
dt.Rows.Add(dr);
ds.Tables.Add(dt);
return (ds);
}
}
JavaScript code:function pageLoad() {
WebService.GetValues(1, OnCompletion);
}
function OnCompletion(results)
{
var
dataOutput = "";
var
divOutput = $get("Output");var strReturn = "<br />";
dataOutput =
"Dataset: " + strReturn;for(m in results)
{
dataOutput += m + strReturn;
}
dataOutput +=
"DataTable: " + strReturn;for(m in results.tables[0])
{
dataOutput += m + strReturn;
}
dataOutput +=
"Rows: " + strReturn;for(m in results.tables[0].rows)
{
dataOutput += m + strReturn;
}
dataOutput +=
"Rows[0]: " + strReturn;for(m in results.tables[0].rows[0])
{
dataOutput += m + strReturn;
}
dataOutput +=
"Rows[0].Name: " + strReturn;for(m in results.tables[0].rows[0].Name)
{
dataOutput += m + strReturn;
}
dataOutput +=
"Columns: " + strReturn;for(m in results.tables[0].columns)
{
dataOutput += m + strReturn;
}
dataOutput +=
"Columns[0]: " + strReturn;for(m in results.tables[0].columns[0])
{
dataOutput += m + strReturn;
}
dataOutput += "rows[0].Name: " + results.tables[0].rows[0].Name + strReturn;
dataOutput +=
"Columns[0].dataType: " + results.tables[0].columns[0].dataType + strReturn;dataOutput += "Columns[1].dataType: " + results.tables[0].columns[1].dataType + strReturn;
dataOutput +=
"Columns[1].isKey: " + results.tables[0].columns[1].isKey + strReturn;divOutput.innerHTML = dataOutput;
}
