ASP.NET Podcast Show #101 - ASP.NET AJAX Futures Data - Video and Audio
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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:
<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 Codeusing 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;}
