Pass dataset value to javascript using web service.

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Hi all, I need to create a web service to pass the dataset to javascript function. I don't have that much idea in webservice.I wish to know the step by step process. Can anyone help to solve this out.

Thanks in advance.

arun

Posted 26-Jun-12 19:32pm

arun.m.mr

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Vani Kulkarni · Accepted Answer · 2012-06-26T19:40:00

Solution 1

Hello,

Below link provides you information with which you can start:
Calling Web Services from HTML Pages using JavaScript[^]
http://aspdotnetcodebook.blogspot.in/2008/04/how-to-read-dataset-object-in.html[^]
http://www.geekzilla.co.uk/viewADFA2CBB-DA86-4E79-86BB-1EABB8735257.htm[^]
http://forums.asp.net/t/1602373.aspx[^]
http://forums.asp.net/t/1765475.aspx/1[^]

Posted 26-Jun-12 19:40pm

Vani Kulkarni

Comments

arun.m.mr 27-Jun-12 4:24am

Thank you Vani Kulkarni.

Vani Kulkarni 27-Jun-12 5:01am

Welcome arun!

arun.m.mr 27-Jun-12 5:26am

<%@ Page Language="C#" %>

<%@ Import Namespace="System.Data" %>

<script runat="server">
[System.Web.Services.WebMethod]

[System.Web.Script.Services.ScriptMethod]
public static System.Data.DataTable MyMethod(int value)
{
return GetDataSet(value);
}

public static System.Data.DataTable GetDataSet(int value)
{

DataTable dt = new DataTable("Author");
DataRow dr;
dt.Columns.Add(new DataColumn("Id", typeof(Int32)));
dt.Columns.Add(new DataColumn("Author", typeof(string)));

for (int i = 0; i <= 10; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "Author" + i.ToString();
dt.Rows.Add(dr);
}
for (int i = 20; i <= 40; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "Author" + i.ToString();
dt.Rows.Add(dr);
}

DataView dv = new DataView(dt);
dv.RowFilter = "Id='" + value + "'";

return dv.Table;
}

</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Untitled Page</title>

<script language="javascript" type="text/javascript">
function CallMyWebService()
{
WebService.MyMethod(1,OnRequestComplete);
}
function OnRequestComplete(result)
{
var str="";
for(var i = 0; i < result.rows.length; i++)

{
str+=result.rows[i].Author +"<br>";

}
document.getElementById('result').innerHTML=str;
}
</script>

</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="scriptManger1" runat="server"
EnablePageMethods="true">
<services>
<asp:ServiceReference Path="~/WebService.asmx" />

<div id="result">
</div>
<input type="button" önclick="CallMyWebService();" id="myButton"
value="Call MyWebService" />
</div>
</form>
</body>
</html>
if you tried, you likely received some sort of circular reference serialization error to take advantage of this, you will need to add the following to your web.config:

<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">

</scripting>

I use the same code. But it is not working. Can u check it Vani.