I am having an issue with dropdown list when viewstate is disabled. The selectedindexchanged event fires even for the other events on the page.
I am pasting the code bello. To reproduce the issues I am mentioning change the selected value of the dropdownlist and then click any button the selected indexchanged event fires even thought we didnot change the value.
[Code]....
I have a shopping cart page (Cart.aspx) that has a button that will (sometimes) post to a third party payment gateway, if payment is necessary. The payment gateway will process the payment and then do a silent post to my website (Order.aspx) so I can update the order status.
Order.aspx always throws an invalid viewstate error, even though viewstate is disabled on the page.
What's happening is that Cart.aspx (which has viewstate enabled) posts to the payment gateway, and the gateway will post it back as part of the silent post. Even though Order.aspx has viewstate disabled and validation disabled, it still tries to validate the __viewstate field it's being given.
I know setting EnableViewState=false will disable the rendering of the __viewstate field, but if another page provides the field, shouldn't it still skip validation? I tried calling ViewState.Clear() on the Page_Init event of Order.aspx, but ViewState is apparently empty. how to get around this? I don't want to disable ViewState on Cart.aspx (in some cases it may be necessary), but I can't figure out how to clear it on Order.aspx.
I have a repeater which viewstate is disabled, inside i have a textbox and a submit button. Before disabling viewstate i could get the text from the textbox in the submit buttons onClick event. But now it doesnt seem to work.
I dont want to enable viewstate on the repeater as my site get really heavy then. How can I get the value form the textbox when I click the submit button? using .net 3.5
After witnessing some strange behvior I'm confused about ViewState again :/
My understanding was a textbox needed to have "EnableViewState" set to true otherwise when the you postback the fields contents would disappear.
That's not happening, I created a textbox and button and a label.
The button was set to copy contents of text box into the label when I pressed it.
I did and the text was populated into the label and remained in the textbox?
This was inside an UpdatePanel and the page itself has a MasterPage, so that might have something to do with it, but I have about 50 textboxes on this page all with viewstate=true on, so I would really like to know what controls need to have enableViewstate=true in order o function properly.
If I disable the ViewState on a ListView, the events raised by it are no longer ired. OnPagePropertiesChanging is the ListView event I've always used in combination with the DataPager to update the ListView to the correct page once a DataPager item is clicked, but since its not being fired, I'm wondering if there are any other options. My ListView is currently in an UpdatePanel, and I'm caching the results that the ListView is being bound to. I could rebind the cached results on the PageLoad, but I can't think of a good way to determine if the PageLoad is being accessed because the DataPager was clicked, or for some other reason, so this doesn't seem like a good idea
View 2 RepliesI am using a GridView with an ObjectDataSource bound to a DataTable. I am using the GridView for displaying a report, NO editing is being done, just read only, however, I am sorting and paging. I need to turn off ViewState for the GridView to improve performance. After turning off the ViewState I start getting the error messages for both paging and sorting:The GridView 'gridView' fired event Sorting which wasn't handled.This is fine I just need to know how to implement the Sorting and Paging events correctly to leveage the ObjectDataSource. I would preffer not to remove the ObjectDataSource from use, especially if there is a way I can manually wire up the datasource correctly to continue to use the GridView as I had been when ViewState was on.Any help on getting the datasource wired up or a solution for handling the events in the context of the datasource would be great.
View 1 RepliesHow to disable two drop downs on checking one of radio button from radiobutton list,,its like radiobuttons with no ID in side <asp:RadiobuttonList> tag.
View 1 RepliesI have a ASP.NET 4.0 webforms site where I have the MasterPage so it is set to ViewStateMode="Disabled" along with the content placeholders being set similarly.
When I'd view my page I'd still see a ViewState field rendered, I then tried adding the ViewStateMode="Disabled" to the page level also but that didn't change anything.
I'm having trouble with a simple radio set of two radio buttons (I don't want to use a RadioButtonList [RBL] because RBL doesn't allow child controls, and in my case, if you select one option, I want to enable a textbox next to the button; yes you could hack this with jQuery to move the textbox, but that's dirty!). I would check one, submit the form (either explicitly or through AutoPostBack), and the CheckedChanged event would never fire. When the page was reloaded, both buttons would be unchecked, regardless of their initial state on non-postback load or the state before form submission.
form id="form1" runat="server" enableviewstate="true">
<div>
<asp:RadioButton ID="foo" Text="foo" runat="server" AutoPostBack="true" OnCheckedChanged="rbChanged" Checked="true" GroupName="foobar" EnableViewState="true" />
<asp:RadioButton ID="bar" Text="bar" runat="server" AutoPostBack="true" GroupName="foobar"
OnCheckedChanged="rbChanged" Checked="false" EnableViewState="true" />
[code]...
I tried this in many scenarios and everytime the ViewState is disabled page-wide, NoBot raises an internal NullReferenceException and always returns InvalidBadSession. I suspect that you are referencing the ViewState and it returns a null value which is then used. It's probably a good idea to think about a way that avoids using ViewState.
View 1 RepliesI want to disable my viewstate in a form because its too bulky (about 1mb per page) due to retrieving some data from database and in other place on the same form I want to access a control from my master page. but when I set viewstate of Listview to false I'll get following error: Object reference not set to an instance of an object. what should I do in this situation? veiwstate is too damn bulky
and here is what I've written for accessing particular control:
Control cc = Page.Master.FindControl("mainContent").FindControl("ListView1").FindControl("itemPlaceholderContainer");
foreach (Control ListItemctrl in cc.Controls)
{
Control lblNewsId = ListItemctrl.FindControl("lblNewsID");
if (lblNewsId != null)
{
Type t = lblNewsId.GetType();
if (t.FullName == "System.Web.UI.WebControls.Label")
{
string newsID = ((Label)lblNewsId).Text;
foreach (Control childCtrl in ListItemctrl.Controls)
{
CheckBox ctrlCB = childCtrl.FindControl("chkItem") as CheckBox;
if (ctrlCB.Checked)
{
//based on DDLAction we will do the things ;)
}
if (childCtrl.FindControl("chkItem") != null)
break;
}//end foreach childCtrl
}
}//end outer if
}//end foreach listItenctrl
I have a CheckboxList that seems to load and do everything right, except for when I do a postback, it will not have the Item.Selected property set. I have viewstate disabled for the entire page.
I load it like so(inside Page_Load on every load):
foreach (DataRow service in d.Tables[0].Rows)
{ [code]...
and MyLabel never has any text added to it. I can verify with the debugger that it does reach the _Click's foreach loop, but no item is ever selected. What could be the cause of this?
When we disabled the viewstate in gridview its lose value but this case not true with Textbox control why?
View 1 Repliesi want to find control radio button list i have child control as listitem at runat server,i have id like i have 4 option e.g.option1,option2,option3,option4 i want to selected one of them.
View 2 RepliesI want to add 2 radiobuttons into a column:
- Present
- Absent
There is also a field in the database: 'Present'
I have googled his topic, most of the answers provide with the .aspx code.
I would like to do it from the 'Design' method, ie. from the Property box.
If the user select 'Absent' then a dropdown list have to be 'visible' on the next column for selection.
I have a asp:listbox with 5 items in it. By default the list box is disabled. (i.e it only shows the items in it but user cant do anything with these items.) I have to make the color of these items in the list box to red but when the listbox is disabled the items are defaulted to the gray color. Any idea how I can change the color of the items in the disabled list box ?
View 1 RepliesI have a table with 10 columns out of which 8 have a radiobuttonlist, now the two ohter columns that I have, one has text boxes and another one a label.
I want the columns 1 and 2 to align with the rest of the columns. Because its columns 3 - 8 have radiobuttonlist, its considering one Radiobuttonlist in one cell of the table
[Code]....
One of the gridviews looks like this:
Q1 SQ1 A1
Q1 SQ1 A2
Q1 SQ1 A3
Q1 SQ2 A1
Q1 SQ2 A2
Q1 SQ2 A3
[Code]....
All fields are BoundFields (except radiobuttons). They can't be converted to templates, I am using boundfields for row-level displaying in RowDataBound.Each row has a radiobutton and only one radio button should be selected per subquestion (SQ).How I can ensure only one answer is selected per subquestion? On radiobutton click or on submit?
I am developing a website of online examination and i want to know how to display question of my paper along with its Answer options as radio button list. And if i use any data control then how to add radiobutton list n bind that list thru database
View 3 RepliesI have a CheckBoxList (CBL) control inside a gridview. The CBL viewstate is enabled and I populate the CBL items from a session variable with the following code
[Code].....
How can I maintain (save) the user CBL selection while postback ?
I just upgraded from 3.5 to 4.0 and downloaded and installed the AJAX toolkit to my toolbox. However, all the controls in the AJAX list (and other "non-standard" lists also, such as Silverlight and Form controls) are disabled.
View 1 RepliesI'm trying to write a custom validation on a set of radiobutton list where if certain radio button is selected, a specified checkbox needs to be fill in with certain amount.
Code:
<asp:CustomValidator ID="CustomValidator1" runat="server" OnServerValidate="CustomValidator1_ServerValidate" ClientValidationFunction="CheckAmt" ControlToValidate="txtAmt" Display="Dynamic" ErrorMessage="Enter contribution amount" SetFocusOnError="True" Enabled = "true" ValidationGroup="GiftValidate"></asp:CustomValidator><br />
Code:
[code]....
[URL]
Is it possible to have radiobutton control list in one row. Now it is in 3 rows.
radiobuttonlist (Yes and No)
if yes, textbox should be visible
could we do it using ajax and without using autopostback property?
<asp:RadioButtonList ID="rblSplitWeek" runat="server">
<asp:ListItem selected="true">No Choice</asp:ListItem>
<asp:ListItem Text = "First" Value = "Session('s_price_1')"></asp:ListItem>
<asp:ListItem Text = "Second"></asp:ListItem>
</asp:RadioButtonList>
But keep getting an error when trying to put the session variable in