Web Service Returning XML Result And Nodevalue Is Always Null?
May 25, 2010
I have an ASP.NET web service which returns an XMLDocument. The web service is called from a Firefox extension using XMLHttpRequest.
var serviceRequest = new XMLHttpRequest();
serviecRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
I consume the result using responseXML. So far so good. But when I iterate through the XML I retrieve nodeValue - nodeValue is always null. When I check the nodeType the nodeType is type 1 (Node.ELEMENT_NODE == 1).
Node.NodeValue states all nodes of type Element will return null.
In my webservice I have created a string with the XML i.e. xml="Hank"
I then create the XmlDocument
XmlDocument doc = new XmlDocument();
doc.LoadXML(string);
I know I can specify the nodetype using using CreateNode. But when I am just building the xml by appending string values is there a way to change the nodeType to Text so Node.nodeValue will be "content of the text node".
I had requirement that i need to display four charts in one report. The data for the report is given through stored procedure. In this stored procedure each chart have its own result set. ie., the Stored Procedure is returning four result sets.
I have used the script as follows to display simple alert and confirmation. On confirmation if the result is true i have to execute button click code that was written but i am unable to do thatÂ
I am trying to return single string result through a stored procedure and Linq. This works fine when I test the stored procedure but it is not returning the value to the page. The value returned is always 0 which is the return value. This is the stored procedure:
ALTER PROCEDURE Login @CustomerName nvarchar(50), @Password nvarchar(50) output As Select @Password=Password From Customers Where Customers.CustomerName=@CustomerName
This is the vb ALTER PROCEDURE Login @CustomerName nvarchar(50), @Password nvarchar(50) output As Select @Password=Password From Customers Where Customers.CustomerName=@CustomerName is the code created by the designer
This is the designer function <FunctionAttribute(Name:="dbo.Login")> _ Public Function Login(<Parameter(Name:="CustomerName", DbType:="NVarChar(50)")> ByVal customerName
As String, <Parameter(Name:="Password", DbType:="NVarChar(50)")> ByRef password As String) As IntegerDim result As IExecuteResult = Me.ExecuteMethodCall(Me, CType(MethodInfo.GetCurrentMethod,MethodInfo), customerName, password) password = CType(result.GetParameterValue(1),String) End Function
This is regarding GetPreloadedEntityBody() function of HttpWorkerRequest class . I am using this method to get perloaded data of requested page. but GetPreloadedEntityBody() function alway returns me null value , while same code is working for server with IIS6.0
1) I have Application_PostAcquireRequestState event . on which i do all user releated validation.
2) After Sucessful validation i am creating object like below code snippet of worker process.
Dim hwr As HttpWorkerRequest = CType(context.GetType.GetProperty("WorkerRequest", Reflection.BindingFlags.Instance Or Reflection.BindingFlags.NonPublic).GetValue(context, Nothing), HttpWorkerRequest)
3) AFter That checking where request has body or not and the calling GetPreloadedEntityBody() which is returning null alway for IIS7.0 ,while in IIS6.0 same code is working fine.
if hwr.HasEntityBody Then Dim preloadedBufferData As Byte() = hwr.GetPreloadedEntityBody() end if
what more do i have to do so that i can get return value form GetPreloadedEntityBody() function.
iam using asp.net2.0 with c# with sql server 2000 when iam executing the procedure in local system it is working fine.but when iam executing in client system procedure returns null value, i have checked all connection string , and session value all are working
iam using webservice for create customer.by using WSDL(webservice) Url iam able to create customer Successsfully using Createcustomer request class. but in responce iam unable to get Unique ID the reponce object should generate as per SOAP functioanly iam unable to see the result set it is always null. How can i do this i need to capture that Unique ID after creating customer. it's Async mode. In below responce e.result set containning NULL values evn i customercreated in database.how to get my UniqueId in responce. my code:
{ Customer customer = new Customer(); PersonName pn = new PersonName(); pn.FirstName = txtFname.Text; pn.LastName = txtLname.Text; pn.MiddleName = txtMname.Text; pn.Salutation = "Mr."; customer.PersonName = pn; CreateCustomerRequest ccr = new CreateCustomerRequest(); ccr.CreateCustomer = customer; RSWS rsws = new RSWS(); rsws.CreateCustomerCompleted += new CreateCustomerCompletedEventHandler(rsws_CreateCustomerCompleted); rsws.CreateCustomerAsync(ccr); } void rsws_CreateCustomerCompleted(object sender, CreateCustomerCompletedEventArgs e) { CreateCustomerResponse ccresp = e.Result; Page.RegisterStartupScript("inspa", "<script>alert('customer created successfully')</script>"); }
Im currently experincing some difficulties with the viewState. The scenario is that i have a datagrid that has a column of buttons that when pressed will store a value in the viewState. I have already done this on one occasion in the same page, but for some reason the second item in the view state is always returning null, even when i hardcode in a number in before the postback. Im at a loss as to why this is happening, anyone expericened this and know what is wrong.
EDIT: Ive found out the cause, Its due to when you click a button in a data grid it does the postback code first, then fires the event handler, so of course the view state would be empty as it is coded to be set in the event handler for the button click. Is there any way to avoid that? So the event code is fired before the postback code?
I have 3 radio buttons op1, op2, op3 working as a group. In the code behind I check to see if a paticular button is checked, then do some processing. The problem is all the buttons return null. Checked in the debugger and all values are null even op1 which value is set to true.
This problem is driving me nuts. I have labels inside a gridview. When i reference them, i keep getting a null error. This is definatly that it cant find the labels inside the template. below is my code that i am using.
Line 13: Line 14: Private Sub BindGrid() Line 15: Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString Line 16: Using con As New SqlConnection(constr) Line 17: Using cmd As New SqlCommand("Customers_CRUD")
Imports System.Data Imports System.Configuration Imports System.Data.SqlClient Public Class tessatusatu Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
I have a problem with getting jquery to retrieve results from a WCF service. I am hosting the WCF service within IIS and when I attach the debugger to this process I can see that the code is processed successfully. However, when it hits the callback within jquery there is no data??
I have set up a trace on the wcf service and there are no errors. It just seems as though the data is lost after the wcf service method completes.
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] public class EcopsService : IEcopsServiceContract { #region IEcopsServiceContract Members public string Echo(string echoThis) { return string.Format("You sent this '{0}'.", echoThis); } #endregion }
I am using SqlHelper.ExecuteDataset(MyConnectionString, CommandType.StoredProcedure, "GetInformation", new SqlParameter("@ID", ID));
In my stored Procedure, I am doing a lot of calculation with joins and it took 19 sec to execute at my sql Server 2008. My application had been working perfectly for 5 days but now as database increases, I found a problem that my connection is breaking at that point. At Sql Server, it execute fine but when I add a breakpoint and watch the stored procedure is returning null.
var query = from emp in dbEmp.Employees join dept in dbEmp.Departments on emp.DeptID equals dept.DeptID where dept.DepartmentName.Contains(this.TextBox1.Text) select new { EmpID = emp.EmpID, EmpName = emp.EmpName, Age = emp.Age, Address = emp.Address, DeptName = dept.DepartmentName };
if (query==null) Label1.Text = "no results match your search";
Everything works in the right way, but the label doesn't show the message when query result returns null. The label can show without condition(querry==null). So how to test if a var query result returns nothing?
I am developing an application with WCF services. The basic functionaloty of a screen is to provide an entry screen to add particular entity. Once save even fired It will save the data to the database and call the bind method to bind into the grid by refreshing the latest data.
When I am running the site from my source (Visual Studio) , it works perfectly. When the client calls method to fetch the data the WCF service, it returns latest (added) data. But the issue comes in the server when it works with IIS. I deployed the code in the server, once the data added I am getting the old data only. But after two refresh I am getting the latest data.
what required to be done to get the latest record.
I am hoping someone can point me in the right direction here. I am trying to create web service that will return ajaxified results. Specifically, I want to write a web service that will fetch email through a secure connection. However, rather then have the web service return every single email, I just want to fetch maybe 5 emails at a time. I've always used Ajax as a client helper technology and not sure how to go about implementing this on a server side, or if its even possible.
I'm going to be calling a webservice that will return me data in xml format. Since the web service is not ready yet, I want to test locally by calling a function that returns the xml. So if I have a sample xml file on my hard-drive, how do I just open it and read it and create an xml string from it? I don't care at this point about parsing anything out; I will do that in the caller and have that written. I just want all the xml back.
I'm trying to retreive values entered by users in the textboxes in the footer of the gridview and insert these values into another sql table.My code is as follows :-
protected void GridView2_RowCommand(object sender, GridViewCommandEventArgs e) { if(e.CommandName.Equals("addnew")) { TextBox t1 = (TextBox)GridView2.FooterRow.FindControl("tfrm"); string frm = t1.Text; TextBox t2 = (TextBox)GridView2.FooterRow.FindControl("tsub"); string sub = t2.Text; string cmd = "insert into suggestions values('" + frm + "','" + sub + "','c','c')"; con.Open(); SqlCommand com = new SqlCommand(cmd,con); int a = com.ExecuteNonQuery(); GridView2.DataBind(); con.Close(); } }
But the strings 'frm' and 'sub' returns null values.
I have a query that references many tables, however the main record doesnt necessarily have records in the other tables. In my formview itemtemplate, i bind the values of the query but I'm getting an obvious error when the value is null. This is what I'm trying to do: (the field is a boolean btw). These fields are hidden so I don't really care if it gets assigned a temp value or something.
[Code]....
Error: BC30452: Operator '=' is not defined for types 'Object' and 'System.DBNull'.
I am trying to deploy a wcf service. I have created a simple service, basically I have created a new wcf service and tried to deploy it however I get this error
The type 'WCF_Application.Service1', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.
I am trying to deploy my service to a subdomain like https://services.mydomain.com/business
