Reterieving Values From View State?
May 31, 2010How can we reterive value of a sever control from viewstatet? For example if we want to reterive value of text in texbox server control.
View 1 RepliesHow can we reterive value of a sever control from viewstatet? For example if we want to reterive value of text in texbox server control.
View 1 RepliesI'm trying to retain "visible" property of a control using view state in the following way
public bool showstatusbox {
get { return Convert.ToBoolean(ViewState["statusbox"]); }
set { ViewState["statusbox"] = value; }
}
Is there anything I should do other than this to retain value. Because, though I store the value in view state, on postback, its becoming null.
I am having a ASP.net application it having three pages ,page 1,page 2,page 3,when the user navigating between this pages I want to maintain the view state in page level after postbacks(i.e.) .If a user visits page 3, passing some query loads some data .then he moves to page 1 doing some entries .after that he once again moves to page 3 now I want to display the data previously available at the time he moves to page 1, same
way I want to do to my three pages up to the user logging out.
i have one method which save datatable in viewstate.i am calling this method in. page_load2. Prerenderthe page was every heavy,i did tracing of page i found due to calling of method from preprnder it doubled the viewstate sizewhat was the reseon behind this.
View 2 RepliesI have a clear button and a textbox in an aspx page. I set the session variable in this page as
String str = Textbox1.Text;
Session["TypeIds"] = str;
and I clear the sessions in a clear button event as
Session["TypeIds"]=null;.
Then when the user types some value in the textbox ,on Response.Redirect on another aspx page, the session variable returns null values.It does not retain its session state. The session state has to be maintained in the next page. Is it because this clear button event and setting explicitly to null creates this problem?
I know the basic of view state. But I dont understand the functionality of view state at a control. For example, a texbox has a property view state. what is the purpose ? what it wiil act for true or false value.
View 3 RepliesI have two radio button list:
*1* report views -- 4 options -- NOT in updatepanel
*2* pagination views -- 2 options -- IS in updatepanel
The situation goes as follows: Refresh WORKS in default setting but when I select *2* radio button options and refresh the page renders the state that the (1) was entered in.
Example: () are the radio buttons
Report Viewing: () (x) () () Pagination View: (x) () REFRESH works!
Report Viewing: () (x) () () Pagination View: () (x) REFRESH fails to display Report Viewing: () (x) () () Pagination View: (x) ()
Report Viewing: () (x) () () Pagination View: (x) () REFRESH works!
OR: () are the radio buttons
Report Viewing: () () (x) () Pagination View: () (x) REFRESH works
Report Viewing: () () (x) () Pagination View: (x) () REFRESH fails to display Report Viewing: () (x) () () Pagination View: () (x)
Report Viewing: () () (x) () Pagination View: () (x) REFRESH works
I am using the session variable to hold the Pagination Viewing option but during page states, I've noticed that when a 2nd option is selected of *2* radio buttons (doesn't matter of 1st or 2nd option was initially selected) that during debugging mode the step over corrects the issue but not the right table viewing. Upon entering Page_Init selection selection index of radio button list returns to 1st option.
What is the maximum size of view state?
View 4 Replies1. the difference of view state and control state.
2. when & how view state is created after that what extent we can use that view state.
3. when & how control state is created after that what extent we can use that controlstate.
As a programmer how much clarification we need to know about view state and control state??
I am trying to use "viewstate" inorder to 1.get the information i type in onepage and retrieve into another page.2.so i created 2 text boxes FirstName and Lastname and a submit button in first web page.3.i want to retrieve these names in the other page for which i am writing the code for button.But i dont know exactly how to use the viewstate....i tried with request.querystring and its working.So i want to use viewstate instead request.querystring.
View 9 RepliesI have a grid view with a nested text box in it.I would like to turn view state off but the fact of the matter is when data is posted,the text boxes inside the gridview aren't available (there are no rows in the gridview on postback). Control's information is not stored in the View State (for things like selected value and .text etc.):Control state,introduced in ASP.NET version 2.0, is similar to view state but functionally independent of view state.However,control state cannot be disabled. Control state is designed for storing a control's essential data (such as a pager control's page number) that must be available on postback to enable the control to function even when view state has been disabled. Source: http://msdn.microsoft.com/en-us/library/1whwt1k7.aspx
View 2 RepliesI have a partial view that is rendered on a view. That partial view has textboxes in it. The user can enter values into them.
I need to put all the values from the textboxes in my partial view into an array, and then give the view (the parent page rendering that partial view) access to that array.
I have a grid view which displays some values. now i have to calculate row wise sum of those values for each row and then display against them.i tried this code but i am getting error as Input String Was not in Correct Format.
public void gv_RowCreated(Object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
int total = Convert.ToInt32(e.Row.Cells[1].Text) + Convert.ToInt32(e.Row.Cells[2].Text) + Convert.ToInt32(e.Row.Cells[3].Text) + Convert.ToInt32(e.Row.Cells[4].Text) + Convert.ToInt32(e.Row.Cells[5].Text) + Convert.ToInt32(e.Row.Cells[6].Text) + Convert.ToInt32(e.Row.Cells[7].Text);
((Label)gv.FindControl("Label8")).Text = Convert.ToString(total);
}
}
I'm having troubles remembering how to grab the list view's state, or page, so that when you leave the list, you can return to the list view page you left on. I have a data pager, and I have hyplerlinks for items in the list view that take you to a file upload or file delete page, and then returns to the list view. It returns to the list view's initial state (first page).
View 1 Replieswhat is the use of view state?
what purpose we using view state?
difference between viewstate and session state?
i have been going through the documentation of viewstate. [URL]It was mentioned that objects that can be serialized are stored in viewstate. What is the meaning of serializing of objects ??
View 2 Replies(I have a feeling i'm making a mental error thinking this is possible, because it seems too easy, but here goes)
For my intranet web app with 20 users on slow machines, the view state is slowing down their browsers.
But the network is local and fast. So I think to myself, why bother putting all that data on the user's browser?...Something like putting it in the database and then all the page needs to maintain is a unique key. But then I remembered that's how session state pretty much works.
QUESTION: Am I missing something or is this really possible?
Which one more costilier View State or Session when a bulk data is stored. Why?
View 2 RepliesI've read somewhere that events of ASP .NET are based on View State of ASPX page. The values of submitted controls are matched with their value of view state and if any difference is found then the corresponding event is called up.
"When events are really based on view state than why events are fired even when the view state is disabled using EnableViewState=false."
I'm tired of including
EnableViewStateMac="false"
in every page. How to do that globally?
My question is why do we need to Bind() Gridview on evrytime we click on Paging.
If Gridview has a view state then the paging should work from View State then why do we do something like the following on Page Change Indexing. Why do we have to call the database ?...
Gidview1.Datasource = DatabaseCall();
Gridview1.DataBind();
I have a master page and i am changing the masterpage file property to some other master page dynamically in the page PreInit event and that changing url is taken from a viewstate. but the view state is not getting in the pre init event.
View 2 RepliesHow can I retain data on any link click in web page. For example, I have two drop down list boxes and I have sleected some data in it and when I am clicking on some link, these two ddl's are getting refreshed. How can I retains this.
View 4 Replieshow does it work when i have a data grid that i want page able and sortable, do i use view state? does the data get pulled once and then the view state keeps all the data and grid working, sortable, page able? or do i need to go to the db server each time i page and sort?
View 2 RepliesI want to know why we must set the serializable attribute to save an object in view state.
Also, which type of objects can we store in view state?