Jquery Ajax Learning Example 6 Makes a request to WebService and returns DataSet (XML) Asynchronous call_jquery

　[WebMethod]
public DataSet GetDataSet()
{
DataSet ds = new DataSet();
DataTable dt = new DataTable();
dt.Columns.Add("Name", Type.GetType("System.String"));
dt.Columns.Add("Password", Type. GetType("System.String"));
DataRow dr = dt.NewRow();
dr["Name"] = "小花";
dr["Password"] = "aaaaaaaaa";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["Name"] = "Little Soldier";
dr["Password"] = "bbbbbbbbb" ;
dt.Rows.Add(dr);
ds.Tables.Add(dt);
return ds;
}

//Return DataSet(XML)
$(document).ready(function() {
$('#btnDataset').click(function() {
$.ajax({
type: "POST",
url : "WebService.asmx/GetDataSet",
data: "{}",
dataType: 'xml', //The returned type is XML
success: function(result) { //Executed on success Method
//Capture exceptions during processing and output
try {
$(result).find("Table1").each(function() {
$('#dd' ).append($(this).find("Name").text() " " $(this).find("Password").text());
});
}
catch (e) {
alert(e);
return;
}
},
error: function(result, status) { //The callback function here will be executed when an error occurs
if (status == 'error') {
alert(status);
}
}
});
});
});