what is the replacement for viewstate in window application

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hi,This is my code in asp.net

C#

private DataTable CreateDataTable()
   {
       myDataTable = new DataTable("PRODUCTTABLE");

       //DataColumn myDataColumn;

       myDataTable.Columns.Add("Product".ToString());
       myDataTable.Columns.Add("Price".ToString());
       myDataTable.Columns.Add("Quantity".ToString());
       myDataTable.Columns.Add("Total".ToString());
      // myDataTable.Rows.Add(drow);
       ViewState["PRODUCTTABLE"] = myDataTable;
       return myDataTable;
   }

C#

private void Filldatatable()
    {
        myDataTable = (DataTable)ViewState["PRODUCTTABLE"];
        drow = myDataTable.NewRow();
        drow["Product"] = DropDownList1.SelectedItem.Text;
        drow["Price"] = TextBox4.Text;
        drow["Quantity"] = TextBox5.Text;
        drow["Total"] = TextBox6.Text;
        myDataTable.Rows.Add(drow);
        GridView1.DataSource = myDataTable;
        GridView1.DataBind();


    }

now i want to write the same code in window application
but there i am not finding viewstate.so how can i do so.. in window.
what should i do now .please help

Posted 7-Mar-11 6:35am

software_Engi08

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Sandeep Mewara · Answer 1 · 2011-03-07T07:40:00

Solution 1

You need to read-learn on the basics of Winform application development.

Or atleast, should understand/notice the difference between the two based on your ASP.NET knowledge. If you know, in ASP.NET there is this concept of postback, client-server request-response thing... and thus various state management techniques.

Viewstate is one of the state management technique to persist the values for the page across postbacks. Now, there is no concept of postbacks in Winforms. Thus, no need of anything like Viewstate.

What do you say, did I put you on some direction that looks helpful?

Posted 7-Mar-11 7:40am

Sandeep Mewara

Comments

software_Engi08 7-Mar-11 13:43pm

yes give me some direction.how can i do this

Sandeep Mewara 7-Mar-11 13:50pm

:doh:... I thought I already gave!

Sergey Alexandrovich Kryukov 7-Mar-11 13:52pm

Yes you did not bad, my 5.
--SA

Sergey Alexandrovich Kryukov 7-Mar-11 13:52pm

Will you please see my Answer?
As to general development technology, I would start from MSDN overviews for WPF and/or System.Windows.Forms. By the way, I would recommend skipping Forms and going right to WPF. I worked with my young colleagues who never heard of Forms, started with WPF, very successfully.
Also, MVVM is oriented to WPF; and you can find many good works and code samples; please, again, see my Answer.
--SA

Sandeep Mewara 7-Mar-11 13:55pm

I would recommend skipping Forms and going right to WPF.
If thats in our hand! :)

you can find many good works and code samples; please, again, see my Answer
Done! and bookmarked too. :)

Sergey Alexandrovich Kryukov 7-Mar-11 14:36pm

Thank you, Sandeep. In our hands or not, it is a question: if today it's not, tomorrow it will.
--SA

software_Engi08 7-Mar-11 13:58pm

i want to use window application .its compulsory

Sandeep Mewara 7-Mar-11 13:59pm

It's Ok. My answer is for Winforms. And I have given you the right path to move on, just not the 'exact' code. Figure out. Try!

Sergey Alexandrovich Kryukov · Answer 2 · 2011-03-07T07:48:00

There is no such concept for desktop application. View state in ASP.NET is related to the fact that HTTP protocol is stateless; and that needs working around for rich Web application. A desktop a application support all states permanently be the obvious reasons, so such concept is not applicable.

Nevertheless, at the architectural level of the desktop application the problem is maintaining coherency between UI states and the data (roughly speaking). There is a number of architectural design patterns (http://en.wikipedia.org/wiki/Architectural_pattern[^]) which help to support the state coherence (in particular): MVVM (http://en.wikipedia.org/wiki/MVVM[^]), Model-View-Controller (http://en.wikipedia.org/wiki/Model_View_Controller[^]) and its derivative Model-view-presenter (http://en.wikipedia.org/wiki/Model-view-presenter[^]).

Perhaps MVVM is the most popular architectural pattern for .NET.

To get a pretty good idea on MVVM, look, for example, here:
Model-View-ViewModel (MVVM) Explained[^],
WPF: MVVM (Model View View-Model) Simplified[^],
MVVM in WPF Part II[^].

Seach CodeProject for more information: there is a lot of interesting articles.

—SA