Solved

convert windows client to web client

Posted on 2010-09-01
2
282 Views
Last Modified: 2012-05-10
i need help figuring out how to convert this windows client to a web client. My code from the web errors out at: fibertest = proxy.ListFiberTests();

Error:
Object reference not set to an instance of an object.

Question - wasnt that created at:  private System.Collections.ObjectModel.Collection<FiberServiceReference.FiberTest> fibertest = null;

Any suggestions?
Windows client code
private System.Collections.ObjectModel.Collection<FiberServiceReference.FiberTest> fibertest = null;
private FiberServiceReference.FiberTest[] fibertests = null;
private FiberServiceReference.FiberTestDetail fiberTestDetails = null;
private FiberServiceReference.FiberServiceClient proxy = null;

private void Form1_Load(object sender, EventArgs e)
{
proxy = new FiberServiceClient.FiberServiceReference.FiberServiceClient("WSHttpBinding_IFiberService");
}

private void listFiberTestsButton_Click(object sender, EventArgs e)
{
//get all rows of data
fibertest = proxy.ListFiberTests();

dataGridView1.AutoGenerateColumns = false;

DataGridViewTextBoxColumn idColumn = new DataGridViewTextBoxColumn();
idColumn.DataPropertyName = "FiberTestId";
idColumn.HeaderText = "Fiber Test Id";
idColumn.Name = "FTId";

DataGridViewTextBoxColumn workOrderColumn = new DataGridViewTextBoxColumn();
workOrderColumn.DataPropertyName = "WorkOrder";
workOrderColumn.HeaderText = "Work Order";

DataGridViewTextBoxColumn serialNumberColumn = new DataGridViewTextBoxColumn();
serialNumberColumn.DataPropertyName = "SerialNumber";
serialNumberColumn.HeaderText = "Serial Number";

dataGridView1.Columns.Add(idColumn);
dataGridView1.Columns.Add(workOrderColumn);
dataGridView1.Columns.Add(serialNumberColumn);

dataGridView1.DataSource = fibertest;
}

--------------------

web client
private System.Collections.ObjectModel.Collection<FiberServiceReference.FiberTest> fibertest = null;
private FiberServiceReference.FiberTest[] fibertests = null;
private FiberServiceReference.FiberTestDetail fiberTestDetails = null;
private FiberServiceReference.FiberServiceClient proxy = null;

protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
proxy = new FiberMossClient.FiberServiceReference.FiberServiceClient("WSHttpBinding_IFiberService");
}
}

protected void btnListFiberTests_Click(object sender, EventArgs e)
{
//get all rows of data
fibertest = proxy.ListFiberTests(); //*** Errors here

grdvwFiberTests.AutoGenerateColumns = true;
grdvwFiberTests.DataSource = fibertest;
grdvwFiberTests.DataBind();
}

Open in new window

0
Comment
Question by:vicomin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 36

Accepted Solution

by:
Miguel Oz earned 500 total points
ID: 33582521
Your real problem is line 9
proxy = new FiberServiceClient.FiberServiceReference.FiberServiceClient("WSHttpBinding_IFiberService")
the proxy object is not initialized.

Are you using WCF to generate the web service. In WCF, you only need to do something like:
proxy = new FiberServiceClient();
The autogenerated class and config file will take care of the rest.

I will strongly suggest to delete your current web service reference and add it again (On project menu click "Add Service reference". Al so make sure your webe service is working properly. check:
http://www.xvpj.net/2008/03/08/wcf-step-by-step-tutorial/
http://msdn.microsoft.com/en-us/library/bb332338.aspx
http://blogs.msdn.com/b/ericwhite/archive/2010/05/11/getting-started-building-a-wcf-web-service.aspx
0
 

Author Closing Comment

by:vicomin
ID: 33589954
yah changed it to proxy = new FiberMossClient.FiberServiceReference.FiberServiceClient(); and added it to each method.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

While working on Silverlight and WCF application, I faced one issue where fault exception occurred at WCF operation contract is not getting propagated to Silverlight client. So after searching net I came to know that it was behavior by default for s…
Here I am going to explain creating proxies at runtime for WCF Service. So basically we use to generate proxies using Add Service Reference and then giving the Url of the WCF service then generate proxy files at client side. Ok, what if something ge…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question