.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
david stephan
Gaurav Pal
Post New Web Links

Asp.net security problem for Captcha custom control

Posted By:      Posted Date: October 02, 2010    Points: 0   Category :ASP.Net

Hi, I downloaded the source code and followed the instruction to include a captcha control in my asp.net site's from:http://www.mondor.org/captcha.aspx  in my create user control. It was working well but when I implemented Asp.net role base sitemap, This security perventing me showing this captha image. Based on provided security all other portion of the 'create user control' is showing except the captcha image.

One solution is the create a separate folder for this page and ont include a web.config for authorization any other solution so that I keep the page in it's place.

View Complete Post

More Related Resource Links

Problem in Custom Control Unable to find Control To Validate Property


I make a custome control by taking a TextBox and A Regular Expression Validator.When i Use this on a .aspx page it works fine.But when i use this on .ascx page and dynamically load user control on a place holder in .aspx page it through an Error

Unable to find control id '_ctl0:txtEmail' referenced by the 'ControlToValidate' property of '_ctl0:txtEmailRequired'


My Custome control Code is this"--

public class EmailValidator:System.Web.UI.Control, INamingContainer{

private System.Web.UI.WebControls.TextBox textBox;

private System.Web.UI.WebControls.RegularExpressionValidator regularExpressionValidator;

public EmailValidator(){

textBox = new TextBox();

regularExpressionValidator = new RegularExpressionValidator();

IsErrorTextBelow = true;

IsRequired = false;

Problem binding business objects to custom user control properties

I have created a user control (supplierPicker) intended to allows a supplier database to be searched and a supplier selected. I want to be able to use this control in a number of other user controls, by binding the suppplierID property of the supplierPicker to a supplierID property in a business object, which is set as the datacontext of the parent user control. When I do this, and there is a supplierID specified in the business ofbject, the binding sets the supplierID in the supplierPicker control and it shows the correct supplier name in the textbox. However when the supplierID DependencyProperty is changed from within the supplierPicker the newly selected supplier name is shown in the TextBox, but the SupplierID does not propogate back to the business object. Other controls on the parent form work fine, so the binding to the business object seems to be ok. Any pointers as to what I'm doing wrong here would be grately appreciated.  This one has been driving me nuts for days! Snipped code for the supplier picker:         public partial class SupplierPicker : UserControl, INotifyPropertyChanged     {         public static DependencyProperty SupplierIDProperty;         public event PropertyChangedEventHandler PropertyChan

How to create custom security groups to control different custom activities?



How to create  custom security groups to control different  custom activities?

Thanks and Regards,

Swati Jain

Security problem while debugging Infopath custom code


I have made a simple InfoPath formular, and in "Submit Options", checked  "Perform custom action using Code", and write some custom code...

Then i run the debug over this code. The InfoPath formular opened in preview mode, and i could successfully step through InternalStartup method.

I did put some data in fields and clicked on "Submit" button. I expected to be continue debugging at the beging of "FormEvents_Sumbit" method, but i got this error message:

Request for the permission of type 'Microsoft.SharePoint.Security.SharePointPermission, Microsoft.SharePoint.Security, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c' failed.
   at TEST_FORM2.FormCode.FormEvents_Submit(Object sender, SubmitEventArgs e)
   at Microsoft.Office.InfoPath.Internal.FormEventsHost.OnSubmit(DocReturnEvent pEvent)
   at Microsoft.Office.Interop.InfoPath.SemiTrust._XDocumentEventSink2_SinkHelper.OnSubmitRequest(DocReturnEvent pEvent)"

After i clicked OK to this error, i got another one, a little different:

"InfoPath cannot submit the form.
The OnSubmitRequest event handler did not work.
Request for the permission of type 'Microsoft.SharePoint.Security.SharePointPermission, Microsoft.SharePoint

File Upload custom Control problem


Hello All,

I am trying to build a custom control that requires that all the uploaded files should in the database.  I have saved them successfully but when i retrieve them using Generic Handler then the image is always shown broken. I have tried alot but this happens again. Below is my code of the handler.


<%@ WebHandler Language="C#" Class="Handler" %>

using System;
using System.Web;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
using System.IO;

public class Handler : IHttpHandler {
    public void ProcessRequest (HttpContext context) {
        //SqlConnection con = new SqlConnection();
        //con.ConnectionString = ConfigurationManager.ConnectionStrings["connString"].ConnectionString;
        SqlConnection con = new
          SqlConnection(@"server=BEHROZ\SQLEXPRESS;database=UserControl;Integrated Security=SSPI;");

        // Create SQL Command 
        DataTable dr = new DataTable();

        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = "Select Image from TempImage";
        cmd.CommandType = System.Data.CommandType.Text;
        cmd.Connection = con;


        SqlDataAdapter sa = new SqlDataAdapter(cmd);
        SqlDataReader dReader = cmd.ExecuteReader();

Custom Control Design-Time SiteMap Provider Error


Greetings - I was referred here by MSDN forums hope this is the right place -  

I have a custom control (:WebControl) that renders web.sitemap in a specific way. While it runs error free and produces the expected result, at Design-Time it complains

Error Creating Control - MyControl  The provider 'AspNetXmlSiteMapProvider' specified for the defaultProvider does not exist in the providers collection.

I have discovered that the error is cause by this line of code:

string div = string.Format("<div class='{0}' id='{1}'>{2}</div>", this.CssClass, this.ID.ToString(), EnumerateNodesRecursive(SiteMap.RootNode, level));

or more specifically, by the reference to SiteMap.RootNode - I am not clear what is missing thoough because I have configured the SiteMapProvider in web.config as this:

        <add name="AspNetXmlSiteMapProvider" 
             type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" 

video tutorial link for composite and rendered custom server control


hii all

i am new to technology so go easy on this post

according to what i read from web there are 3 type of custom server controls

1 superclass

2 composite

3 rendered

i found video tutorial for superclass custom server control but couldnt find video tutials for other 2.

please forward me link for composite and rendered custom server controls video tutorial  

image inside custom server control



I want to use an image inside a Custom Web server control ! 

Do I need to use Web.resources ? if so , how to do ?

Custom Server Control Property not maintaining state


I have created a server control consisting of a TextArea and a div under it.  My goal is to create my own asp:TextArea type control.  the div is for a Character count of the text area and seems to work ok but i added a CharacterCountVisible property to the control that is always returning true.  See Proptery definition below


<Bindable(False), Category("Appearance"), DefaultValue("True"), Localizable(True)> Property CharacterCountVisible() As Boolean
        Return _CountBoxVisible
    End Get
    Set(ByVal value As Boolean)
        _CountBoxVisible = value
    End Set
End Property

Note the _CountBoxVisible variable is define inside the class as :

Dim _CountBoxVisible as Boolean = True

What I am trying to do is give the user/coder the option to show/utilize the char count feature.  Can make it disappear with textarea1.CharacterCountVisible = False but setting it to true will not make it display.


What am i missing





custom control



i want to create  my own button using server control .cs file ..

it should have background color black and foreground color as lime and also it should have

the eventhandler mechanism when we double click on that..

can u provide a code for that...?

custom control


hi.. i want to create a custom control button and textbox using server control.. if i type the text into the textbox,when i click the button it should go to the next page related to that text...

please can u provide a code for this kind of question 

Custom Control Design view error



I have created a custom control from scratch and it works fine as in you can build the project that uses it and it works fine at runtime. Problem is when you go to design view the control shows an error in the place of where the control should be rendered.

Error: '<SomeValue>' Could not be set to '<SomeProperty>'

This shows up on all my custom set properties. These properties are created as basic as possible. I can give the properties values in Source view and run the app just fine. I can even add a Onclick event. If I don't set any custom properties the control will render fine in Design view. It's only when I set a value to a custom property.

Property Code Example:

public string Text
                string ret = "";
                object obj = ViewState["Text"];
                if (obj != null)
                    ret = obj.ToString();
                return ret;
                ViewState["Text"] = value;

I've even removed the Category and Description tags with no difference.

I don't know if what I said makes sens, but I hope it

Geneva Framework: Building A Custom Security Token Service


A Security Token Service, or STS, acts as a security gateway to authenticate callers and issue security tokens carrying claims that describe the caller. See how you can build a custom STS with the "Geneva" Framework.

Michele Leroux Bustamante

MSDN Magazine January 2009

Desktop Security: Create Custom Login Experiences With Credential Providers For Windows Vista


Why is a change to the Windows logon plug-in interface so exciting? Because with credential providers you can customize the logon experience for your users.

Dan Griffin

MSDN Magazine January 2007

Extend ASP.NET: Simplify Data Binding In ASP.NET 2.0 With Our Custom Control


The wwDataBinder control addresses simple control data binding--binding simple form controls like textboxes, checkboxes, and the selected values of list controls to individual data or object values.

Rick Strahl

MSDN Magazine December 2006

Cutting Edge: Custom Data Control Fields


In ASP. NET 2. 0, the GridView and DetailsView controls are designed to work together. They don't merely provide complementary services, they also share a number of helper classes and components. The output of the GridView control consists of a sequence of rows, each with a fixed number of columns.

Dino Esposito

MSDN Magazine January 2006

Security Briefs: Access Control List Editing in .NET


Access control lists (ACLs) can be complex beasts, and user interfaces for editing them are incredibly tricky to implement properly. That's why I was really excited when Windows® 2000 shipped with a programmable ACL editor, shown in Figure 1.

Keith Brown

MSDN Magazine March 2005

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend