Re: webservice json - ASP.NET Discussion Boards

How to implement event chaining with Page.Render

Member 39190493-Jun-10 9:33

Member 3919049

3-Jun-10 9:33

Hi - I'm developing an ASP.net component that I need to implement through event chaining. For example:

this.Render += MyComponent.Render([Request])

Can someone show me how I would implement this?

Re: How to implement event chaining with Page.Render

T M Gray3-Jun-10 9:59

T M Gray

3-Jun-10 9:59

Rendering an ASP.NET Server Control[^]

Re: How to implement event chaining with Page.Render

Member 39190493-Jun-10 11:18

Member 3919049

3-Jun-10 11:18

OK - So I can do this in MyPage.aspx

this.PreRender += new EventHandler(_MyPage_PreRender);

But what I'd like to do is chain the event handler to a different class.

For example:

this.PreRender += MyComponent.PreRender

or even better:

this.PreRender += MyComponent.MyCustomMethod

So can I chain directly to a method in another class? If so then will you please provide some code to show me how to do this?

How to develop forum application in .net

naresh kumar a3-Jun-10 9:31

naresh kumar a

3-Jun-10 9:31

Hi
I need some help in developing one application based on forums in asp.net. I saw one application based on forums in code project website. This is the same application which I am looking for. For example this is the link which has the forum application.

http://www.codeproject.com/Forums/12076/ASP-NET.aspx

I just do not know how to implement this application. I would appreciate if anybody can give me sample application or any guidance how to do this application...

Thank you....

Re: How to develop forum application in .net

T M Gray3-Jun-10 9:55

T M Gray

3-Jun-10 9:55

"Some help" and "give me sample application" are very different things. If you have absolutely no idea how to even start without someone handing you code, then you shouldn't try to develop this yourself. There are plenty of forums apps you could download.

Re: How to develop forum application in .net

naresh kumar a5-Jun-10 22:00

naresh kumar a

5-Jun-10 22:00

Thank you very much for your guidance. But, Actually I developing a website. I need to implement this forum application in that website. If download forum app from internet, Is this possible to put in my website.
If it is possible, can you give me any link to download that application...

webservice json

AndyInUK3-Jun-10 7:18

AndyInUK

3-Jun-10 7:18

Hi I have created a method within a webservice to return object in JSON.

public class Car : System.Web.Services.WebService
    {
        [WebMethod]
        [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        public string GetCarSpecs(string CarID)
        {           
            Guid photoid;
            Guid thisCarID;
            thisCarID= new Guid(CarID);
            Car car = new Car(thisCarID);
           string output = "{id:" + thisCarID.ToString() + " " + "name:" + car.name + " " + "details:" + car.details+ " " + "photoid:" + (Guid)car.photoid+ " " + "}";
            return new JavaScriptSerializer().Serialize(output);
              
        }

    }

But I am very much in doubt i have got this wrong as I am hardcoding the JSON format which shouldn't be the case.

What am I doing wrong here and how can i fix it ?

Any help would be appreciated.

Thank You
Andyyy

Re: webservice json

PSK_4-Jun-10 2:41

PSK_

4-Jun-10 2:41

You can directly serialize the Car object to JSON

like followng

return new JavaScriptSerializer().Serialize(car);

But this is the old way of doing, Now you don't need JavaScriptSerializer to serialize your object to JSON.

You can check this article, where i did something similar

ASP.NET Lazy Content Loading Through WCF REST Service[^]

WWW, WCF, WWF, WPF, WFC .... WTF

Re: webservice json

AndyInUK4-Jun-10 3:47

AndyInUK

4-Jun-10 3:47

but directly serializing the car object to jason is giving following error -

System.ArgumentException: RecursionLimit exceeded.
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeCustomObject(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValueInternal(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeCustomObject(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValueInternal(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat)
   at System.Web.Script.Serialization.JavaScriptSerializer.SerializeEnumerable

I will have a look at this lazy content loading article aswell.

Thank you

Re: webservice json

PSK_4-Jun-10 3:58

PSK_

4-Jun-10 3:58

It seems that your Car class is referring itself in some way that’s why you are getting this error while serializing.

Can you share the Car class code?

WWW, WCF, WWF, WPF, WFC .... WTF

Re: webservice json

AndyInUK4-Jun-10 4:59

AndyInUK

4-Jun-10 4:59

I can mail you the class if you like as it's bit big for CP ?

Storing information in page

vjvjvjvj3-Jun-10 7:15

vjvjvjvj

3-Jun-10 7:15

Hi,

I need some guidance on how to store the information in a page for the specific requirement.

There are following steps involved in the process.

1) Web application A has deafult page hosting two frames a)frame for drop downs (dd.aspx) b) frame for forms (form.aspx)
2) default.aspx calls a webservice on page load.
2) webservice returns some information e.g. company name, departments, employees in each department, each employees details to Web application A.
Question 1: which format the webservice should return the information . Dataset or XML or JSON
3) Web application's default.aspx forms related drop down lists in dd.aspx (Frame 1)
4) When user selects company name, related dept, a specific employee from the drop down list and clicks ok
5) Second frame (form.aspx) gets the information and generates a form dynamically using this information. Here it uses some javascripts which are based on the information recieved from selected Dropdowns and used to create the data etnry form.
Question 2: Should web service be sending the ready made javascripts? in this case it will be huge information for each object sent .
or
Should the webapplication has code to generate the javascript based on the selected drop down lists?

Question 3: How should the default.aspx or dd.aspx should store the information? Should it be session variable or viewstate? should the data be in dataset format? If the javascripts are to be stored then will it cause performance problem in storing the huge information at page level.


regards

Vijay

[Cross-post]: Storing information in page

Sandeep Mewara3-Jun-10 7:20

Sandeep Mewara

3-Jun-10 7:20

Why posting the same thing in two forums? It's not considered good.
Please follow it at one place: http://www.codeproject.com/Questions/85580/Storing-information-in-web-application.aspx[^]

Next time onwards, post to the forum you feel best suited for your question.

Configuration Error

treuveni3-Jun-10 3:23

treuveni

3-Jun-10 3:23

Hi,

I created a virtual directory and connected it to physical path.
My problem is that i recieve an error where i'm trying to access to the address.

Here is the error-

Configuration Error 
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: Could not load file or assembly 'System.Web.DynamicData, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Source Error: 


Line 49:         <add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
Line 50:         <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 51:         <add assembly="System.Web.DynamicData, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
Line 52:         <add assembly="System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
Line 53:         <add assembly="System.Web.Abstractions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
 

Source File: C:\www\root\AdminDailyLog\web.config    Line: 51 

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.DynamicData, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.


WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Can someone please help me?

Tamir

Re: Configuration Error

Brij3-Jun-10 3:45

Brij

3-Jun-10 3:45

Looks like your webserver has not .net 3.5 framework installed. Install .net3.5 sp1 there then there should not be an error.

Cheers!!
Brij
Check my latest Article :URL Routing with ASP.NET 4.0

Re: Configuration Error

treuveni3-Jun-10 4:04

treuveni

3-Jun-10 4:04

i'm not sure,
because i have applications that already running on the server.

Re: Configuration Error

Sandeep Mewara3-Jun-10 7:14

Sandeep Mewara

3-Jun-10 7:14

treuveni wrote:
i'm not sure,

You are not sure of what? How to install .NET 3.5 while other applications are running?
OR
You are trying to say that other applications that need .NET 3.5 are already running so that installation would not resolve your issue?

If it's the first one, you don't have an option other then to have a downtime and install it on server!

Re: Configuration Error

treuveni4-Jun-10 3:27

treuveni

4-Jun-10 3:27

The second on

gridview rows stored in database

jadhavShubhangi3-Jun-10 1:21

jadhavShubhangi

3-Jun-10 1:21

hi...........

I have a gridview and button.When click on button then all gridview rows inserted into database.how to do this?

please help me.....
thank u.

Re: gridview rows stored in database

Not Active3-Jun-10 1:50

Not Active

3-Jun-10 1:50

You may have a GridView but without a datasource connected to it it won't display a thing. The contents of the datasource is what you want to store in the database.

Have you even looked at examples of GridView?

I know the language. I've read a book. - _Madmatt

Re: gridview rows stored in database

jadhavShubhangi3-Jun-10 2:05

jadhavShubhangi

3-Jun-10 2:05

thanks for reply.....

I have created datatable and that field are added into gridview.

Re: gridview rows stored in database

JHizzle3-Jun-10 2:15

JHizzle

3-Jun-10 2:15

Take your datatable, loop through it and insert each row into your database table then.

Re: gridview rows stored in database

suresh_spsuthar3-Jun-10 2:29

suresh_spsuthar

3-Jun-10 2:29

You can bind DataSet with the grid so that adapter will save all the rows on single button click.

You need not require to loop for all rows in grid. Adapter will do Bulk Insert.

Re: gridview rows stored in database

Sandeep Mewara3-Jun-10 7:17

Sandeep Mewara

3-Jun-10 7:17

Got that you are a beginner, but have you read anything on how grid row values can be selected and used?
Any book, tuorial? Google?

In button click event, you have to traverse row by row and insert in DB. Try first.

Validation of viewstate MAC failed.

amit sahu202-Jun-10 21:33

amit sahu20

2-Jun-10 21:33

I got this error on postback the form after 20 minutes , i am using asp.net 3.5
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[CryptographicException: Padding is invalid and cannot be removed.]
....
......
[ViewStateException: Invalid viewstate.
Client IP: 122.162.81.11
Port: 50254
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.0.19) Gecko/2010031422 Firefox/3.0.19
ViewState: O8yx/NB6OwGsouM4ow3.....

please any one suggest?

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