Sukumar Raju's Blog

ASP.NET Web API Logging and Troubleshooting

2013-04-18T13:39:00Z

Logging exceptions to persistent store or email alert with exception stack helps developer to troubleshoot issues without having to debug the application. This practice helps in exception trend monitoring and improve the application. In the applications where security is high priority it is feasible to trace and log security exceptions. Mostly all of the tracing and logging technologies provide configuration driven trace levels i.e., Information, Warning, Error etc.

This article discusses various tracing and logging technologies and walks through 'configuring ASP.NET Web API application to log unhandled exceptions to database and generate email alert with exception stack using ELMAH'.

AppFabric provides two services for monitoring and caching services.

Monitoring services
Caching services

AppFabric is IIS extension that provides a dashboard to monitor and troubleshoot issues with in WCF and WF applications and services. Installation & configuring AppFabric creates database to store service trace as well. AppFabric installation and configuration process is discussed in another blog post.

AppFabric does not support ASP.NET Web API services to monitor and troubleshoot issues.

In order to log unhandled exceptions from ASP.NET Web API there are number of alternatives as outlined below.

Microsoft Enterprise Library : Exception and Logging application blocks can be utilised to log or email exception stack. Configuring Exception Handling application block is explained in my blog article http://weblogs.asp.net/sukumarraju/archive/2009/10/04/microsoft-enterprise-library-4-1-exception-handling-block.aspx

Configuring Logging application block to email exception block is discussed in my blog article at http://weblogs.asp.net/sukumarraju/archive/2010/08/21/email-exception-stack-using-logging-application-block-email-trace-listener.aspx

Log4Net provides another mechanism to log trace to text file or to database or custom location.

Being built on top of ASP.NET run time WebForms, Web API, MVC, Single page and SignalR can utilise above alternative technologies in addition to ASP.NET Health monitoring to log exceptions or trace to desired location for applications troubleshooting.

Logging unhandled exceptions using ELMAH

ELMAH is an open source tool for ASP.NET services, exceptions that are thrown in ASP.NET applications trigger event handlers in ELMAH tool. It provides pluggable out of box implementation.

Note that all the frameworks that run on ASP.NET can take advantage of ELMAH to log unhandled exceptions.

Step 1: Get the assembly from Nuget

PM> Install-Package Elmah.Contrib.WebApi

Installing the assembly updates application Web.config SectionGroup, connection Strings and Http modules.

Now in memory exception logging for the application, which can be accessed by navigating to /elmah.axd">/elmah.axd">/elmah.axd">http://<port>/elmah.axd as shown below.

Note that when the application is stopped or app pool recycles the exception will be lost. Because these are in memory exceptions. Selecting the Details hyperlink in the above dashboard opens detailed exception stack with complete server variables and values.

Step 2: Log exceptions to SQL Server database

To store exceptions to SQL Server database get the assembly.

        1: PM> Install-Package elmah.sqlserver

Adding the package adds App_Readme folder with SQL script to generate database tables and stored procedures for logging exceptions. Also adds <errorLog> element to Web.config and connection String as below.

       1: <connectionStrings>

       2:     <add name="elmah-sqlserver" 

       3: connectionString="Data Source=****;

       4: User ID=****;Password=****;

       5: Initial Catalog=****;" 

       6: providerName="System.Data.SqlClient" />

       7:  

       8: <!-- of course it is required to update above SQL connection-->

       9:  

      10: <security allowRemoteAccess="false" />

      11: <errorLog type="Elmah.SqlErrorLog, Elmah" 

      12: connectionStringName="elmah-sqlserver"

      13: applicationName="Contact Manager" />

      14:  

      15: <!-- applicationName added to distinguish the applications in the 

      16: centralised exceptions database -->

That is it! Unhandled from the application logged into database as shown below.

Step 3: Email exception stack

Provide SMTP (mail server), port, From and To email addresses in <errorMail> section as shown below.

         1: <elmah>

         2:   <errorMail from="robot@elmah" to="dev@groupcom"  

         3:   async="true" smtpServer="xxxx.xxx.xxxx.xx" smtpPort="25"/>

         4: </elmah>

This generates email alerts with exception stack as shown below.

Note that running applications can take advantage of ELMAH error logging, all it requires is copying required assemblies and configuration into Web.config.

Conclusion:- Logging all web applications exceptions to database helps to troubleshoot, it is feasible to implement a dashboard with the exceptions from various applications that are utilising ELMAH. All it requires to configuring ELMAHR (Elmah + SignalR), real time web framework. This is for another blog article !!

Resources

http://code.google.com/p/elmah/
http://www.hanselman.com/blog/ELMAHErrorLoggingModulesAndHandlersForASPNETAndMVCToo.aspx
http://msdn.microsoft.com/en-us/library/aa479332.aspx

ASP.NET Web API testing using NUnit framework

2013-02-05T16:57:00Z

Hello

I am not intending to provide an introduction for this topic, you can download the solution that I uploaded at MSDN code samples at http://code.msdn.microsoft.com/ASPNET-Web-API-NUnit-ac687169

Please note that in above solution the Web API service returns DTO in Json format to client.

To concise the solution consists of ASP.NET Web API project and a test project for testing service controllers and service Http response using HttpClient.

complete source is available at above URL from MSDN code sample. Here is the actual implementation of the same, which is replicated.

Controllers testing

        1: using System;

       2: using System.Collections.Generic;

       3: using System.Linq;

       4: using System.Text;

       5:  

       6:  

       7: using ContactManager.Controllers;

       8: using ContactManager.Models.Repository;

       9: using NUnit.Framework;

using System.Web.Http;

using ContactManager.Models.Entities;

  

namespace ContactsNUnitTests

{

    /// <summary>

    /// Contains NUnit test cases for ContactsController

    /// </summary>

    [TestFixture]

    public class ContactsControllerTests

    {

        ContactsController contactsController;

        ContactRepository repository;

        

        int count;

        int contactId;

        

        [SetUp]

        public void Setup()

        {

            //create an instance of contactRepository

            repository = new ContactRepository();

            

            //Create an instance of controller by passing repository

            contactsController = new ContactsController(repository);

            

            //Number of records

            count = contactsController.Get().contacts.Count;

            

            //Pass contact ID and store the retrieved contact ID

            contactId = contactsController.Get(1).contact.Id;

        }

  

        [Test]

        public void GetAllContacts()

        {

          Assert.IsTrue(count > 0);

        }

  

        [Test]

        public void GetContact()

        {

          Assert.IsTrue(contactId.Equals(1));

        }

    }

}

Service response testing

Testing service Http response using HttpClient

       1: namespace ContactsNUnitTests.ServiceHttpResponse

       2: {

       3:     using System;

       4:     using System.Collections.Generic;

       5:     using System.Linq;

       6:     using System.Text;

       7:  

       8:     using NUnit.Framework;

       9:     using System.Net.Http;

    using System.Configuration;

    using System.Net;

    using System.Net.Http.Headers;

  

    /// <summary>

    /// Service Http Response tests

    /// </summary>

    public class HttpResponseTests

    {

        private HttpClient client;

  

        private HttpResponseMessage response;

  

        [SetUp]

        public void SetUP()

        {

            client = new HttpClient();

            

            client.BaseAddress = new Uri(ConfigurationManager.AppSettings["serviceBaseUri"]);

            response = client.GetAsync("contacts/get").Result;

        }

  

        [Test]

        public void GetResponseIsSuccess()

        {

            Assert.AreEqual(HttpStatusCode.OK, response.StatusCode);

        }

  

  

        [Test]

        public void GetResponseIsJson()

        {

            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

            

            Assert.AreEqual("application/json", response.Content.Headers.ContentType.MediaType);

        }

  

        [Test]

        public void GetAuthenticationStatus()

        {

            Assert.AreNotEqual(HttpStatusCode.Unauthorized,

 response.StatusCode);

  

        }

    }

}

References:

http://www.peterprovost.org/blog/2012/06/16/unit-testing-asp-dot-net-web-api

http://www.asp.net/web-api/overview/testing-and-debugging

http://blogs.msdn.com/b/youssefm/archive/2013/01/28/writing-tests-for-an-asp-net-webapi-service.aspx

Free eBook: 50 Ways to Avoid, Find and Fix ASP.NET Performance Issues

2013-01-30T18:48:03Z

50 Ways to Avoid, Find and Fix ASP.NET Performance Issues

MVC for Web Forms Developer

2013-01-26T05:30:00Z

Below video tutorial walks through the MVC pattern, similaries between MVC and Web Forms and then implements a MVC application from scratch.

Reference: MSDN Channel 9: TechEd 2010

Free eBook: Intro to asp.net mvc 4: https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CD0QFjAA&url=http%3A%2F%2Fdownload.microsoft.com%2Fdownload%2F0%2FF%2FB%2F0FBFAA46-2BFD-478F-8E56-7BF3C672DF9D%2FIntro%2520to%2520ASP.NET%2520MVC%25204%2520with%2520Visual%2520Studio%2520-%2520Beta.pdf&ei=nmUnUYWDF-Wd0QWW_IGQCg&usg=AFQjCNHUve5OvbugUO-yLtrNX7EDJzEnnA&bvm=bv.42768644,d.d2k

Best source: Readable online at http://ofps.oreilly.com/titles/9781449320317/ch_MvcForWebFormsDevs.html

Refer http://www.asp.net/mvc for tutorials, vieos, samples, books and more resources

InfoPath Forms Services : Activate or deactivate a form template for a site collection

2013-01-04T16:15:00Z

After InfoPath form has been published and uploaded to the server from SharePoint admin site in order to add the content type with in SharePoint document library it is required to activate the form in SharePoint site as below.

1. Select Site Settings

2. Under Site Collection Administration tab select Site collection features hyper link

3. On the Site Collection Features page, choose the row for the form that needs to be activated or deactivated, then select Active or Deactivate button.

References:

http://office.microsoft.com/en-gb/sharepoint-server-help/activate-or-deactivate-a-form-template-for-a-site-collection-HA010167281.aspx

http://office.microsoft.com/en-gb/sharepoint-server-help/demo-deploy-an-administrator-approved-form-template-HA010205047.aspx?CTT=3

eBooks from Microsoft

2012-08-29T15:04:09Z

Latest technical eBooks from Microsoft

http://blogs.msdn.com/b/mssmallbiz/archive/2012/07/27/10334262.aspx

Few more here

SharePoint 2010 Training resources

2012-05-04T11:27:46Z

Few Microsoft provided articles and free video training resources.

SharePoint 2010 Developer Training Kit MSDN

Video center for SharePoint 2010 development

Learn SharePoint Server 2010

Technet.Microsoft SharePoint Server 2010 videos

SharePoint server virtual labs

Microsoft demo showcase suite

How I passed SharePoint 2010 exam 70-667

Microsoft SharePoint 2010 showcase

MCTS Certification

Exam 70-667: TS: Microsoft SharePoint 2010, Configuring
Exam 70-573: TS: Microsoft SharePoint 2010, Application Development

Extract Year and Text between brackets using Regular Expressions

2012-05-04T11:09:38Z

Hi All,

It is straight forward to use Regular expressions to extract text from a string. Below code snippet demos extracting year from a string and Text in between brackets from a string.

Extract Text between brackets

   1: static void Main(string[] args)

   2:         {

3:

   4:             //Regular Expression pattern

   5:             string Pattern = @"\((.*?)\)";

   6:             //Regular Expression with pattern

   7:             Regex re = new Regex(Pattern);

   8:             string strSearch = "Microsoft (www.msdn.com)";

9:

  10:             //Loop through the string and output the matching text

  11:             foreach(Match m in re.Matches(strSearch))

  12:             {

  13:              Console.Write(m.Value.Replace("(",string.Empty).Replace(")",string.Empty).Trim());

14:

  15:             }

  16:             Console.ReadKey();

  17:         }

Extract Year from string

   1: //Regular expression for year

   2: string pattern = "([0-9]{4})";

   3: Regex re = new Regex(pattern);

   4: string txtYear = string.Empty;

5:

   6: string strSearch = "SharePoint 2010";

7:

   8: foreach (Match m in re.Matches(strSearch))

   9: {

  10:     txtYear = m.Value;

  11:     Console.Write(txtYear);

  12: }

13:

  14: Console.ReadKey();

  15:         }

References

http://support.microsoft.com/kb/308252

http://msdn.microsoft.com/en-us/library/ms228595(v=VS.80).aspx

http://www.mikesdotnetting.com/Article/46/CSharp-Regular-Expressions-Cheat-Sheet

Configuring WCF service to utilise Enterprise Library: Logging application to log data to database

2011-11-07T18:22:45Z

This article walks through the 'Enterprise Library: Logging application' configuration process to log data to database using WCF service.

Note that regardless of Web service type i.e., SOAP or RESTful the configuration process is same.

Technical environment:-

Visual Studio 2010 with .NET 4.0
Enterprise library 5.0
WCF

ASP.NET Web application on Client end.

Open Service Web.config using Enterprise library configuration tool

Open the Service Web configuration file using Enterprise library configuration tool, which can be found at C:\Program Files\Microsoft Enterprise Library 5.0\Bin [assuming that you chosen C: drive for Enterprise library installation process]

[Image: Enterprise library configuration tool location]

Note: Make sure that Service Web.config contains database connection string in connectionStrings section.

Step 1: Open Enterprise library configuration tool

Below screenshot shows the configuration tool after opening the service web.config file.

[Service web.configuration with in Enterprise Library configuration tool]

Step 2: _Choosing the Default database instance with in Database settings section

Choose the Default Database Instance from drop down list, in this example Logging is chosen as default one as shown below.

[Default Database Instance]

Step 3: Add Logging block block

Choose 'Logging Settings' to add logging application block from Blocks menu as shown below screenshot.

[Add_Logging_Block]

Step 4: Expand Logging Settings section

In order to configure Logging block, expand logging settings by clicking the icon on the left hand side as marked in red below image.

[Expand_Logging_Section_Image]

Step 5: Add Database Trace listener

From Logging Target Listeners selecting the + opens 'Add Logging Target Listeners'.

Choose 'Add Database Trace Listener' from context menu that is opened from
'Add Logging Target Listeners' as shown below screenshot.

[Add-database-trace-listener]

Step 6: Choose Database Trace Listener as default listener

Make sure that 'Database Trace listener' is chosen as default listener in Logging settings --> General section as shown in below image.

[Choose-db-trace-listener]

Note:- By selecting right mouse button on particular configuration section it is feasible to Validate particular section as shown in below image.

[Configuration-Sections-Validate]

Step 7: Enterprise library application block DLL references

Make sure that below mentioned references from Enterprise library API are added to
the service WCF service as shown in below image.

These DLLs are available from Enterprise Library installation at

C:\Program Files\Microsoft Enterprise Library 5.0\Bin

[Required DLLs]

Step 8: Add required 'using' statements

   1: using Microsoft.Practices.EnterpriseLibrary.Logging;

   2: using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;

   3: using Microsoft.Practices.EnterpriseLibrary.Logging.ExtraInformation;

   4: using Microsoft.Practices.EnterpriseLibrary.Logging.Filters;

   5: using Microsoft.Practices.EnterpriseLibrary.Data;

   6: using System.Data;

Step 9: Create a method that utilises Logging application block to log data to database.

Create a private LogWriter variable as below;

   1: private LogWriter writer = EnterpriseLibraryContainer.Current.GetInstance<LogWriter>();

Logger method can be similar to the one below or it can have more parameters.

   1: ///Create a logEntry object and write to database

   2: public void  DbLogger(string _Title, string _Message, string _MachineName)

   3: {

   4:     LogEntry logEntry = new LogEntry();

5:

   6:     logEntry.Title = _Title;

   7:     logEntry.Message = _Message;

   8:     logEntry.MachineName = _MachineName;

   9:     logEntry.TimeStamp = DateTime.Now;

10:

  11:     writer.Write(logEntry);

  12: }

Step 10: Test the functionality with a client instance

   1: protected void Page_Load(object sender, EventArgs e)

   2:         {

   3:             //Create an instance of client proxy

   4:             Service1Client client = new Service1Client();

   5:             client.Open();

6:

   7:             try

   8:             {

   9:                 client.DbLogger("Logger service consumer", "Testing the Logger db functionality", "My machine");

  10:             }

11:

  12:             catch (Exception ex)

  13:             {

  14:                 Response.Write(ex.InnerException.Message.ToString());

  15:             }

  16:         }

Running the client app with above should log data to Logging database, which can be installed from scripts provided with Hands-on-Labs referenced below.

Creating Logging database

Note that Logging database can be created by running the SQL script provided with Enterprise Library 5.0 Hands on labs, which can be downloaded at
http://www.microsoft.com/download/en/details.aspx?id=6932

Reference

http://msdn.microsoft.com/en-us/library/ff632023.aspx

http://www.microsoft.com/download/en/details.aspx?id=6932

http://msdn.microsoft.com/en-us/library/ff650510.aspx

Visual Studio 2011 LightSwitch released

2011-07-27T20:02:00Z

VS LightSwitch 2011 is released today to get the development/deployment process up and running in few minutes..

Multi select List Box ‘OR’ search using Stored procedure

2011-07-20T21:19:26Z

It is common requirement to allow multiple List Items selection and selecting the ‘Search’ button returns all the records where each List Item Text matches with record as explained below.

Example: Multiple selection List Box

User Interface

Selecting the Button should return all records WHERE VB.NET ‘OR’ ASP.NET ‘OR’ ‘VBA’ matches using IN clause as this is OR search rather than AND search.

Database:

Say ‘Technology’ column consists of below rows in database table.

Search results:- Search should return all the 5 rows from above table.

Lets explore further to achieve the above requirement using Stored procedure.

I. ASP.NET

<asp:ListBox ID="ddlTechnology" runat="server"

SelectionMode="Multiple">
<asp:ListItem Value="" Text="Select single or multiple Systems" />
<asp:ListItem Value="ASP.NET" Text="ASP.NET" />
<asp:ListItem Value="VB.NET" Text="VB.NET" />
<asp:ListItem Value="VBA" Text="VBA" />
</asp:ListBox>

II. In code behind build a string with selected List Items Text delimited with a comma as below.

//Loop through List Items list and add selected items
// with comma in between
foreach (ListItem item in ddlTechnology.Items)
{
  if (item.Selected)
  {
  selectedTechnologies +=  "," + item.Text.Trim();
  selectedTechnologiesList.
Add(ddlTechnology.Items.IndexOf(item));
            }
        }
if (selectedTechnologies.Length != 0)
  {
selectedTechnologies = 
selectedTechnologies.Substring(1);
        }
//Store in session
Session["Technologies"] = selectedTechnologies;

//In this example selectedTechnologies String 
//consists of "VB.NET,ASP.NET,VBA"

III. Pass to Stored procedure as parameterized query

/// <summary>Pass search parameters to Stored procedure and ///return DataTable
/// </summary>
/// <returns>DataTable</returns>
private DataTable Search()
    {
string procedure = "spSearchTechnologies";

        SqlConnection con = new SqlConnection(ConnectionString);
//DataTable 
DataTable dtTechnologies = new DataTable();
try
{
SqlCommand cmd = new SqlCommand(procedure, con);
cmd.CommandType = CommandType.StoredProcedure;
//Pass search criteria with parameters
cmd.Parameters.AddWithValue("@Technologies", 
Convert.ToString(Session["Technologies"]));
//Data adapter
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
//fill the data table with results
adapter.Fill(dtTechnologies);
//Display number of records returned
if (dtTechnologies.Rows.Count != 0)
{
lblRecCount.Text = "Total Number of records returned:" 
+ " " + dtTechnologies.Rows.Count.ToString() + "\n";
}
else
{
lblRecCount.Text = "No records matched your search criteria";
}
}

catch (Exception ex)
{
lblRecCount.Text = ex.InnerException.Message;
}

finally
{
if (con != null)
{
con.Close();
}
}
//return the data table
return dtTechnologies;
}
#endregion

IV. Stored Procedure source

ALTER PROCEDURE [dbo].[spSearchTechnologies]
(
	--parameters
	@Technologies nvarchar(100)= NULL;
	
)
AS BEGIN

If @Technologies	IS NOT NULL AND 
Len(@Technologies)=0 Set @Technologies  = NULL

--Select
SELECT id,technologies	
FROM technology t 
WHERE

--StringSplit is T-SQL function that splits passed
--string into separate ones where COMMA (,) appears
--StringSplit function source is copied below
(@Technologies IS NULL OR t.technology
COLLATE DATABASE_DEFAULT IN (SELECT technology
FROM dbo.StringSplit(@Technologies,',') t1,
technology t WHERE 
CHARINDEX(t1.items,t.technology) > 0 ))
)
ORDER BY t.technology

END

V. StringSplit T-SQL Function

FUNCTION [dbo].[StringSplit](@String varchar(8000),
@Delimiter char(1))      
returns @temptable TABLE (items varchar(8000))      
as      
begin      
declare @idx int      
declare @slice varchar(8000)      
     
select @idx = 1      
if len(@String)<1 or @String is null  return      
     
while @idx!= 0      
begin      
set @idx = charindex(@Delimiter,@String)      
if @idx!=0      
set @slice = left(@String,@idx - 1)      
else      
set @slice = @String      
                
if(len(@slice)>0) 
insert into @temptable(Items) values(@slice)      
 
set @String = right(@String,len(@String) - @idx)      
if len(@String) = 0 break      
end  
return      
end

Thats it. Search returns DataTable object with accurate results.

There are number of approaches to handle the requirement, one of the good resources that I come across is at http://vyaskn.tripod.com/passing_arrays_to_stored_procedures.htm

Microsoft Community contributor award

2011-05-30T20:16:53Z

Good to enhance knowledge by sharing and being awarded ‘Microsoft Community contributor award 2011’.

Recvd email on 27th April 2011.

Exporting DataTable to CSV file using Binary order markup

2011-04-05T11:37:32Z

Exporting Data from DataTable object to .CSV is discussed here.

The Issue

While working with european characters, exporting data into .csv file (Excel 2003) replacing eastern european characters with funny characters. Due to lack of support in Excel 2003.

Resolution

In order to resolve the issue, it is required to use BOM(Binary Order markup). The BOM gives the producer of the text a way to describe the text stream's endianness to the consumer of the text without requiring some contract or metadata outside of the text stream itself.

Excel 2003 cannot recognize the encoding correctly, BOM can help it recognize.

   1: System.Text.StringBuilder sb = new System.Text.StringBuilder();

   2: foreach (DataColumn col in dtResults.Columns)

   3:             {

   4:                 sb.Append(col.ColumnName.ToUpper() + ",");

   5:             }

6:

   7:             sb.Remove(sb.Length - 1, 1);

   8:             sb.Append(Environment.NewLine);

9:

  10:             foreach (DataRow row in dtResults.Rows)

  11:             {

  12:                 for (int i = 0; i < dtResults.Columns.Count; i++)

  13:                 {

  14: sb.Append(row[i].ToString().Replace("\n", " ")

  15: .Replace("\n\r", ";").Replace("\r", " ").Replace(",", ";").Replace("0", "0") + ",");

  16:                 }

17:

  18:                 sb.Append(Environment.NewLine);

  19:             }

  20:             Response.Clear();

  21:             Response.ContentType = "text/csv";

  22:             Response.AppendHeader("Content-Disposition", "attachment; filename="

  23:             + fileName + ".csv");

24:

  25:             byte[] BOM = { 0xEF, 0xBB, 0xBF };

  26:             Response.BinaryWrite(BOM);

27:

  28:             Response.Write(sb.ToString());

  29:             Response.End();

30:

Encrypt and Decrypt connectionStrings section in Web.config using ASPNET_REGIIS utility

2011-02-18T16:50:00Z

Encrypting and decrypting connectionStrings section progrmatically is explained in this article from my blog.

Using aspnet_regiis.exe utility from Microsoft .NET framework it is quite easy and straight forward to encrypt and decrypt connectionStrings section in Web.config to protect sensitive data.

1. Open Visual studio command prompt window from Programs

2. Navigate to the folder where the application stored with in File system

3. Utilising aspnet_regiis.exe utility use below shown command to encrypt connectionStrings section.

c:/>aspnet_regiis -pef connectionStrings .

In the above command P stands for protection, E stands Encryption and F file system. . [DOT] for current location

Note: Make sure to navigate inside the website/web application project in file system.

That is it. ConnectionStrings section gets encrypted using RSA pubic key encryption to encrypt and decrypt data.

Note that in order to decrypt the same section use >aspnet_regiis –def connectionStrings .

References

http://msdn.microsoft.com/en-us/library/k6h9cz8h%28v=VS.90%29.aspx

Video: http://msdn.microsoft.com/en-us/security/bb977434

Access controls with in Change Password control

2011-02-13T12:03:21Z

In order to access controls with in Change Password control

1. Change the control to Template by going to design mode then smart tag
2. Choose Convert to Template

//Access the Cancel button which is with in ChangePassworTemplateContainer as below, it would be similar for other controls

//Get a reference to button, which is in ChangePasswordTemplateContainer
Button btnCancel = (Button)
ChangePassword1.ChangePasswordTemplateContainer.FindControl("Control_ID”);
            if (btnCancel != null)
            {
               //Action to perform
            }

References

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.changepassword.aspx

http://quickstarts.asp.net/QuickStartv20/aspnet/doc/ctrlref/login/changepassword.aspx