C# - How To Maintain Data After Postback
Nov 22, 2010
I created an application that grabs jokes from a database on start and shows the first joke on screen. Now when we hit the Next button it should show the second joke. When I first grab the jokes, I put them in a globally declared datatable. To show the first joke I'm doing:
Title.Value = dt.Rows[0]["joke_title"].ToString();
Detail.Value = dt.Rows[0]["joke_content"].ToString();
Now when I hit Next button I'm running these commands:
Title.Value = dt.Rows[0+1]["joke_title"].ToString();
Detail.Value = dt.Rows[0+1]["joke_content"].ToString();
but when the Next button is hit, the page posts back and I lose the values in datatable. How do I solve the error without losing the data in the datatable?
View 3 Replies
Similar Messages:
May 3, 2010
I have a abc.aspx page having some control like (drop downs, text boxes), i am filling a grid based on selected items in the drop downs and date selected from the ajax calender extender control attached to the from data and to date text boxes.
Inside grid there is a link which redirects to bcd.aspx, this page (bcd.aspx) is having a back button to redirect abc.aspx.
Now what i want is, abc.aspx should main its state like grid, drop downs and text boxes should be shown as it was earlier, i.e. all should have same values as it was at the time of redirecting to bcd.aspx.
Yes, there is a way to maintain the state by passing all values from query string and than get all values back and rebind all controls. But i don't want to go this way because i will have pass so many values in query string.
View 6 Replies
Apr 27, 2016
I am using this article but i did not included the query to populate the gridview. I would like to know how to maintain the data (on postback / load) in gridview though I'm not using database [URL] ....
View 1 Replies
Mar 25, 2010
i have a gridview which consists of databounds and dropdownlist control. When I press the Add Grid Row Button, it will insert a row. Now my question is, if the user selected an item in dropdownList in the firstrow and the user click the AddGridRowBtn Again which will generate the 2nd row, how would i maintain the selectedItem in the dropdownlist after postback?
Source For Gridview:
[Code]....
Add Row Code
[Code]....
[Code]....
And For Grid Row Created Event
[Code]....
View 5 Replies
Feb 20, 2010
Im using asp.net treeview in my apllication.i have apply css class for selecte node of treeview
.MyNavTreeSelected
{
background-color:Gray;
}
when i run the page first time last node of my treeview automatically set that background color as i applied in css.....and if i select any node of my treeview as soon as my css has worked but after page post back it just disapper...how do i maintain that css after postback... and last node of my treeview defaultly set css....
View 1 Replies
Oct 3, 2010
Does anyone know how to maintain postback while calling WebForm_DoCallback? it always set the vertical scrollbar of the page to the very top.
View 2 Replies
Dec 29, 2010
If my model has a property of type Dictionary<int, int>, and I populate the dictionary in my GET controller action, how do I maintain the values so they are still there when I am doing a post to another action like this:
[Code]....
View 2 Replies
Feb 8, 2010
How can I maintain focus to a textbox which is placed inside a usercontroll while on postback.
View 6 Replies
Feb 25, 2010
Using VS2008, .NET 3.5, and C#. The page contains (among other things) a dropdownlist and an objectdatasource. The Page_Load event fires the objectdatasource's Select event. The Selected event iterates through the returned datatable, feed each row into a ListItem, checks to see if a certain column is True or False and, if true, changes the styling for that row to color:red. Finally, the listitem is bound to the dropdownlist. The end users sees all of the dropdownlist items that are false in black and the items that are true are in red. Works perfectly. However, as soon as any item is selected, the page does a postback and the font colors in the dropdownlist revert to the default black. Is there a way, other than rerunning the method that iterates through table and creates the listitems, of maintaining the coloration of the items? Is there a ViewState setting or something?
Here is the dropdownlist and objectdatasource's Selected event:
[Code]....
[Code]....
View 3 Replies
Jan 29, 2010
I created a registration form where I have a radio buttun list and a drop down which have autopastback property true.
The issue is when the radio button or the value in drop down list are selected the page is posted back and the password and confrim password are disappearing after the postback. The post back is necessary.I want to keep the passwords maintained even after the post back.
View 7 Replies
Feb 24, 2011
i've a contact form that's plain html and an asp.net button to post everything to server side (and eventually validate).
the problem is that if server-side validation fails, input-values are not manteined.
what's the best client side to mantein fields value?
this is my actual jquery code, i use css selectors:
<script>
$("form").submit(function() {
var asapReqStr = "???";
var asapTmp = $(".asapRequired").val();
[Code].....
View 3 Replies
Feb 21, 2014
[URL]
I have got the gridview to populate from my own datatable and there are quite a few results in the table. As a result I have a scroll bar on my gridview.
If there is only a few results the gridview works perfectly, however; When I select a row further down in the scroll it selects and highlights but refreshes the view to the top of the gridview.
View 1 Replies
Mar 11, 2010
I have some collapse able anhcor link tags on a page that reveal some text when clicked on i.e.: [+] Topic This is all done in javascript client side. I would like to maintain the users scroll position on the page when these links are clicked on. They dont cause a postback as iv mentioned above its client side javascript.
View 6 Replies
Jun 6, 2010
i use html form and html control to submit data,like bellow:
[Code]....
after submit,the input email lost it's data,how to keep it?
View 6 Replies
Oct 22, 2010
I'm trying to make a form that could have one or multiple textboxes. I have a textbox and a button to add additional textboxes.
I have no problem adding a second textbox inside a panel but I want to be able to keep adding more textboxes every time the link button is clicked and later reference those boxes to be saved. I would also like to maintain the value of the textboxes there. They are not saved to the database until all the necesary texboxes have been added.
I added the textbox using:
private void button1_Click(Object sender, System.EventArgs e)
{
TextBox textbox1 = new TextBox();
panel.controls.add(textbox1);
}
that works fine, but when i click the button again it doesn't add an additional textbox which is what i need.
View 5 Replies
Apr 19, 2010
I have "n" <tables></tables> on my page and each <table> has One(1) <asp:CheckBox.. Enable ='true"/> and "x" <asp:TextBox Enabled="false"..>. Each Table looks as follows
[Code]....
When I click checkbox, it calls javascript function and enables textboxes (I have added onclick attribute to checkbox). Page also has <asp:Button ...Text="Submit"/> whcih actually grabs the data from the textboxes on the page and send it to the databse. Here is the Onclick event of the <asp"button../>
[Code]....
If the exception is thrown , textBoxes are not reset but on postback textboxes appear as disabled (values are not reset)
So here is what happening on postback when exception is thrown
1) Values are not reset (that is what want)
2) Texboxes appear as Disabled (that is what I don't want on exception, REMEMBER I enable textBoxes using client side script)
How can I keep the textboxes enabled = "true"
View 4 Replies
Jan 12, 2010
How do i Maintain ListBox scrollbar position on postback ?
further details*
Listbox is populated from database size can change.
Scrollbar is vertical.
View 1 Replies
Mar 30, 2010
ScrollBar position resets on postback.Is there anyway to maintain position ?I am adding UserControl(s) dynmically to the page, therefore I want to maintian positon (always maintain position at the end)Following is my .aspx file (Just to show where is the asp:panel and User controls)
[Code]...
View 5 Replies
Mar 13, 2011
I have a gridview that putted in ASP.NET Panel. both of panel and Gridview are in an UpdatePanel. there is a column in gridview that Causes Partial PostBacks. i want to Maintain Panel Scroll position on those postbacks.
View 1 Replies
Mar 11, 2010
I have an asp.net listbox with 15 rows and auto postback when the selected item is changed. This works as expected but, when the form is re-loaded, IE scrolls the list so that the last selected item is now the top visible item in the list. This produces a confusing/jumpy effect for the users and makes the listbox more difficult to use than it needs to be.
Is there any way to get the list scroll position to stay as it was before the postback? i.e, if I select an item from the middle of the listbox, the listbox is scrolled to the same point after postback.
I am using .Net 3.5 but no AJAX.
View 6 Replies
May 4, 2010
I'm using five FileUpload controls on a single web form. Besides allowing the user to upload a file I also am collecting user data. Problem I run into is during the server side validation if any of the user data is invalid on a post back when content it redisplayed the FileUpload controls loose the client url that was selected when browsing. How can I keep that path or set the pathing on the control so they do not have to keep rebrowsing for the files on data validation errors? Right now breaking up the two form sets user data and file upload into two pages is being frowned upon and requirments would like it to be on all one page.
View 1 Replies
Jun 23, 2010
I have the following user control:
[Code]....
This control is used multiple times on one aspx page. The issue is that each time an instance of the control is validated due to a text change any prior error messages are cleared from the validation summary. I want the validation summary to maintain prior error messages during the postback.
View 2 Replies
May 7, 2015
My <input id="FileUpload1" name="FileUpload1" type="file"> and country dropdown both are inside update panel , now on selectedindexchanged it do postback , which i am triggering in update panel to avoid page refresh .
Now the problem is when i select any image in fileupload and then select country , my selectedimage vanishes but its path stays in textbox .
View 1 Replies
Feb 8, 2013
I tried some methods to maintain scroll position on postback but none worked they are
1) In page declaration MaintainScrollPositionOnPostback="true"
2) In Code behind Page.MaintainScrollPositionOnPostBack = true
3)In web.config file in <system.web> section <pages maintainScrollPositionOnPostBack="true" />
I am not using any updatepanel.
View 1 Replies
Jun 16, 2015
My bootstrap tab is inside update panel now on postback it loses its active tab state . I referred this article :
[URL]
But it didn't worked for me. How to maintain bootstrap tab active on postback inside update panel.
View 1 Replies
