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Problems with References in objects

Posted By:      Posted Date: September 04, 2010    Points: 0   Category :.NET Framework
 
Hello!! I'm having a problem very specific.. using C# and asp.net I Have a ToolBar(made by myself) that have a DataGrid (made by myself too) as a property on it. In the Page_Load, I instantiate a grid, then instantiate a toolbar and assign the property "grid" of the toolbar to the newly created grid. My grid has a delegate to DataRendering, that i made an override in the aspx.cs page. In this DataRendering, I've hidden some columns of the grid. But, when I try to access the Grid property in the toolbar object, the columns are in the initial state..... I've try to assign as a reference, using the ref keyword, but the result was the same... Someone here already pass through a situation like this? Thanks


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Problems with References in objects

  
Hello!! I'm having a problem very specific.. using C# and asp.net I Have a ToolBar(made by myself) that have a DataGrid (made by myself too) as a property on it. In the Page_Load, I instantiate a grid, then instantiate a toolbar and assign the property "grid" of the toolbar to the newly created grid. My grid has a delegate to DataRendering, that i made an override in the aspx.cs page. In this DataRendering, I've hidden some columns of the grid. But, when I try to access the Grid property in the toolbar object, the columns are in the initial state..... I've try to assign as a reference, using the ref keyword, but the result was the same... Someone here already pass through a situation like this? Thanks

Problems on WF4 Services, Security and Large Objects

  

Dears,

I have a big problem on using WF4 service. There are several questions I cannot find the answer yet.
Hope that anyone can share their experience to me on solving the following problems.

1. How to change the configuration for each WF4 services ?
    I have created several workflow services and once they build, I can find the service by adding a service reference on the client side.
    However, I need to pass a large object such as image or movie like >20MB file to the WF4 service.
    But I cannot find any configuration on the web.config file on the server side that allow me to change the settings like maxArrayLength,
    maxBufferPoolSize ... 

    For these large objects, is that using streaming mode is the best practice? 
    Actually, where can I find those configuration settings for a xamlx file ?
    And, how can I configure the WF4 service to use Streaming transfer mode on server side?
   
    In addition, I need to verify the user's identification inside the workflow rather than let them pass in a username and password
    for security reasons. If I need to do so, I might need to

Top .NET Performance Problems and how to avoid them

  
Every time I work with one of our .NET customers to help them with managing their application performance I come across the same problems as seen with other clients before: lots of ADO.NET queries, many hidden exceptions in core or 3rd party .NET libraries, slow 3rd party components, inefficient custom code

Rendering ASP.NET Script References into the Html Header

  
One thing that I've come to appreciate in control development in ASP.NET that use JavaScript is the ability to have more control over script and script include placement than ASP.NET provides natively. Specifically in ASP.NET you can use either the ClientScriptManager or ScriptManager to embed scripts and script references into pages via code.

Need help with objects and arrays

  

I have an objuct that I declared like this:

    Class DailyStats
        Dim _day As String
        Dim _hour As String
        Dim _impressions As String
        Dim _clicks As String
        Property Day() As String
            Get
                Return _day
            End Get
            Set(ByVal value As String)
                _day = value
            End Set
        End Property
        Property Hour() As String
            Get
                Return _hour
         

*.axd script references not being rendered to browser

  

I'm running VS2010 with .net 4.0, and am running into issues with the .net ajax script tags mysteriously not being rendered to the browser.

So far I've reduced it to a scenario where I set the DataSourceID property of a databound control.  More specifically, I've only tested it on a Gridview and a DropDownList.

This can be reproduced fairly easily on my machine by following these steps:


1. Create a new empty Web Application Project

2. Create a new Web Form

3. Add a ScriptManager inside the form

4. Add a DropDownList and a DataSource (I used an ObjectDataSource)

5. Set the DataSourceID property of the DropDownList to the ID of the DataSource.  This can be done either declaratively on the .aspx page, or in the code behind in the aspx.cs page, and both produce the same results.

6. Open the page in a browser and watch as you get a javascript error stating "Sys is not defined" and notice that the page source contains no script tags referencing *.axd scripts.


Here's my source code showing my set up:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ScriptResourceFAIL.Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 T

Visual Studio 2008 Memory problems

  

My memory in task manager reaches about 900,000K  and I don't know why it does this. Definately slows everything down, especially when I rebuild my tableAdapters, takes about 30 seconds sometimes to rebuild the project.


How to check for null/empty strings on dynamic objects?

  

What is the proper way to check for null or empty strings on dynamic objects? This is the only solution I've found so far:

if (admin.PasswordHash.GetType() == typeof(DBNull) || admin.PasswordHash == string.Empty)

If the field is null, the object returned is DBNull.Value, but if the field is empty string, it's return as a System.String object. This makes it impossible to do regular "admin.PasswordHash == DBNull.Value" check, as that will fail whenever the field has been set to empty string. Is my example the right (and only) way to go?


Problems with Forms Authentication in DD 4 site

  

Hello,  I am seeing a strange problem with Forms Authentication in my DD site.   A user logs into and can view/edit/delete data all day, but when they execute a Custom Filter against data (for example , a control DynamicData/Filters/CustomerLastNameSearch.ascx ) then the site auth fails, and redirects to the log in screen.

in web.config I have

     <authentication mode="Forms">
            <forms name=".Star" loginUrl="~/Login.aspx" protection="All" defaultUrl="~/Default.aspx" path="/" timeout="43200" cookieless="UseCookies" />     
        </authentication>

Offhand, I am thinking two things : that DynamicData/Filters path requires some special handling for some reason, or the control extension ascx is causing auth to get confused.   Has anyone else experienced this or have any suggestions?  Thanks!


how to serialize objects ??

  

Is there any way or process to serialize the the objects?? i am trying to store the instance of few control in viewstate but it shows error msg that it is not a serialized object. should i perform some steps to serialize the objects ???



Problems posting to a package

  

Hey Y'all


I'm currently creating a program that accesses a mysql package to add data to a few tables.  I'm currently getting an error that says  "

ORA-01403: no data found
ORA-06512: at "JESSE.PKG_WORKPLAN", line 42
ORA-06512: at "JESSE.PKG_WORKPLAN", line 177
ORA-06512: at line 1

"

These lines are

42: INSERT INTO WP_PROJECTS_USERS (PROJECT_USERS_ID, FIELD_UNIT_ID, PROJECT_ID, USER_ID, START_DATE, DESCRIPTION)

and 177:add_team_members(V_PROJECT_ID, V_START_DATE, v_FISC_YEAR, V_MEMBERS ,V_NUM_MEMBERS,'add');


Checking these variables in my asp.net page they are all receiving parameters.


Is there a  way to see what the database is actually receiving from the asp.net page?

Or is there another thing to be looking at?


Thanks!


URL Routing and Existing HttpHandler problems

  

Hello everyone,

I have a problem:

I am currently using 2 features: 

1. HttpHandler

Registering the path="res.aspx" verb="*"

2. URL Routing:

Registering with this pattern: "Company/Edit/{*companyId}","~/CompanyEdit.aspx"

In my CompanyEdit.aspx page, I used httphandler res.aspx to generate some images at client.

  • res.aspx?img=1
  • res.aspx?img=3

Now the problem is here, the page is load success with companyId = "12345", but when the images was loaded at client, it loaded the CompanyEdit.aspx again and show error with wrong id.  

I have debug and find the problem that because when image's urls were generated to client with url=res.aspx?img=1, url=res.aspx?img=3, the asp.net will understand that they are Company/Edit/res.aspx?img=1, Company/Edit/res.aspx?img=3 when it maps with URL Routing pattern.

=> So the CompanyEdit.aspx was load again with wrong id (id now is "res.aspx"). 

So, do you have any ideas to solve this problem, or other design.

Thanks, and best regard


Could not find default endpoint element that references contract 'CurrencyProxy.CurrencyServiceSoap

  

Hi,

I created 2 projects in my solution:

  1. Classic asp.net web service (asmx)
  2. Class library project which references service
  3. web site project which references class library project
  4. Windows app project which references service.

Both projects were created in 3.5 framework and in Visual Studio 2008 Beta 2.

I added web service reference to Class library project. When it asked for namespace I typed "CurrencyProxy". Projects build ok, but when I run web app, Class library throws an error: Could not find default endpoint element that references contract 'CurrencyProxy.CurrencyServiceSoap' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this contract could be found in the client element.

I believe it has something to do with app.config in Class library project. Here is part from app.config:

 <system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="CurrencyServiceSoap" closeTimeout=

ASP.NET 4 precompilation problems

  

Hello!

We used ASP.NET precompilation (first manually, then with VS2008 WDP) with .NET 3.5 almost (see below) successfully.

After we moved to 4.0, the precompilation no longer works properly. The precompilation process itself succeeds, and the website works, but it consumes about twice the CPU it does without any precompilation. We use non-updatable precompilation (so webpages get compiled completely).

Our internal profiling tells us that most of the threads spend their time within variations of the following stack:

...

  System.Web.dll!System.Web.Compilation.BuildManager.GetVPathBuildResultFromCacheInternal(System.Web.VirtualPath virtualPath, bool ensureIsUpToDate) + 0xa2 bytes 
  System.Web.dll!System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(System.Web.VirtualPath virtualPath, bool noBuild, bool allowCrossApp, bool allowBuildInPrecompile, bool throwIfNotFound, bool ensureIsUpToDate) + 0x5b bytes 
  System.Web.dll!System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(System.Web.HttpContext context, System.Web.VirtualPath virtualPath, bool noBuild, bool allowCrossApp, bool allowBuildInPrecompile, bool throwIfNotFound, bool ensureIsUpToDate) + 0xcb bytes 
  System.Web.dll!System.Web.Compilation.BuildManager.GetVPathBuildResult(System

Problems converting VS 2003 project to VS 2008

  

Hi!

I'm having problems converting a VS 2003 project to VS 2008 (tried 2005 as well, same problem). There are several problems;
a) I don't have VS 2003 installed.
b) The project is a web service, however I'm not sure what type of VS project it was created as.
c) The general knowledge about the project setup is..slim.

I get a error message using the conversion wizard, however, I'm not familiar with the tool and I cannot quite find any good information on Google for it, so I am left with a error message I do not understand.

Conversion Issues - myProject.csproj:
Unable to open the Web site 'C:\local\path\to\project\myProject.csproj'. The Web site 'C:\local\path\to\project\myProject.csproj' does not exist.

The web service is not intended to run on the dev machine, it is copied to a test or a prod server. However, I do not know how this was done previously. I'm thinking that in order to convert, it has to access the server on which it should run (which is set somehow in a config maybe). But that doesn't actually make any sence..

If anyone could shed light on this, I would really appreciate it.

Thank you.


Class which contains an array of objects of type "Class2"

  

 

1  Partial Class _Default
2  Inherits System.Web.UI.Page

3 Public Function Ohjoy(ByVal X As Integer) As Integer
4 Dim theClass As New Class1 '= New Class1()
5    theClass.ReSize(0)
6    theClass.myBaby(0).GetName(0) = "Hello" 'Property Chars is read only'
7    Return 1
8 End Function
I have a first class named "Class1". I have a second class named "Class2" Class2, is a member of class 1,
and is implemented as an array of objects of type Class 2.

If I try and call the Accessor GetName() my hard coded value "Hello" in my accessor is not returned? Only
an alpha character like "T"

Also if I try and assigne a value using the setter GetName() it does not work, and the compiler gives me
an error message "property Chars is ReadOnly? Does anyone know what is wrong in my code? Line 6 above

 

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    Ohjoy(1)
End Sub
End Class

Public Class Class1
    Dim bs As Integer
    Public myBaby() As Class2
    Public myB As Class2
    Public Function ReSize(By

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