making a radio button remain selected on postback - asp.net

I am using a GridView with its first column as a template field with radio buttons.
I need to make the first radio button in the first row of the grid remain default selected during page load / postback.
How can this be done?

Read this:
http://www.asp.net/data-access/tutorials/adding-a-gridview-column-of-radio-buttons-vb
The heading titled "Using a Literal Control to Inject Radio Button Markup" may be of particular interest to you

Related

asp.net gridview control is going back to the gridview rather than showing panels on edit button click

I am working on a project in asp.net. I have a gridview that contains employee's names, designation and department. when i click on the edit button on any row gridview gets hide and the second div is visible that contains different buttons like address, education, trainings etc.Each button shows the specific panel to add or edit the data. But the issue is when i click on any button, the control goes back to the gridview rather than showing the appropriate panel it shows the gridview which was hide. I am using OnEditCommand property of the gridview to hide the gridview and show the other div.How to resolve this issue?
asp.net gridvew
divs to show

Retaining state of radio button

I want to retain selected radio button value when user revisits the page.Is there any easy way to do this?
I am using radiobuttonlist to generate radio button options dynamically in code.

Onselectedindexchanged is firing

In grid row command event I am calling a .ascx page as a popup.
In the popup I have one button, on clicking the button, I'm calling one more popup.
Under the second popup I have four dropdown controls, in the dropdown controls I'm filtering and filling the data one after another.
The problem here is, if I filter the third dropdown, the second dropdown field data is getting reset(Onselectedindexchanged is firing).
You might be reloading/binding the drop downs on post back. You may want to change it to something like this
if(!Page.IsPostback)
{
//load the dropdowns the first time.
}

Radio Button Validation

Hii.
In my project, in the main page, I've a ASPxPageControl and ASPxPopupControl. In the ASPxPopUpControl, I've a form consits of two radio buttons and so many text fields and combo boxes etc. In the ASPxPageControl, there are two tabs.
The PopUpElement of ASPxPopupControl is in the second tab. And on the PageLoad(), I've configured to display the first tab.
I want to enable/disable texbox in the form according to the user selection of the radio button. But, when AutoPostBack is enabled, the entire page is refreshed, and the default tab will be the first one. And to resume the form, i've to manually click the second tab and the ASPxPopupControl will open automatically.
Is there anyway to resolve this?? Is there any other control other than radio button to do this?(Which accepts client side scripting)
Firstly, Do you need to postback to enable/disable textboxes? you have rich ClientSide Events for Textboxes to enable/disable/hide them (SetVisible, SetEnabled).
Secondly, you can have your second Tab Content in an AspxCallbackPanel, and when Radio Button changes, you Can do a CallbackPanel Refresh (PerformCallback). Thus, only the Tab Content will update.

How to set always default value for first record in list view in aspx page?

I have an aspx page that uses a simple form to perform a search and the results are presented in a listview.
I have added a radio button to one of the columns and have set the value to be the records FlightNo. set always default value for first record in list view.
What I need to do is allow the user to select the row they require from the list view by selecting the radio button.
Use the "GroupName" property of the radio button control to make the dynamic radio buttons work as a group. You can add some client script to select the row on 'click'.

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