asp.net - How to save connection request to database in this scenario -


I am new to asp.net and know a bit about its work and as I am moving forward I am getting new and more new suspicion

I was working with two RadioLists at this time which are loading on page loads.

Now when a user changes the indicator of the radio button, the list 1. The second one needs to be updated essentially, what is the price set for the currently selected radio button. Since the page will be posted back, so I have to urgently ask a query to get new data from the database for the selected index or the form of the dataset as session Can store 2-3 tables in .

What should I do in this scenario should I re-request a SQL query or retrieve the dataset from the session .

What is the most favorable approach for this and why?

The radio button should not be retrieved from the data database for list 1 (rbl1). It should already be populated by viewtest. It is an invisible object on your page that keeps track between loading your control contents in the browser and returning back to the server. If you rebuild RLB 1 for data on a postback, then you will lose the current selection.

There should be nothing wrong in retrieving the data to send the radiooton list from the data, if the results are going to change depending on the first selection

However, If the data size is small then you want to cache the results in the cache, if all users see the same set of data, or the session cache if it is user-based

Then you will get the first time radiobontonalis You can use the link to query the data based on the selection. 

  & lt; Asp: RadioButtonList ID = "rbl1" runat = "server" autoptback = "true" on-select index = "RLBII-integrated inductive switching" & gt; Protected Zero Page_Load (object sender, event events e) {if (! IsPostBack) {// your RLB 1 tied here}} Secure RAB 1 selected index (Object Sender, EventArgse E) {// Load your second radio button list Load first}

-

Comments

Post a Comment

Popular posts from this blog

Eclipse CDT variable colors in editor -

I hope this is a good question to ask here. This programming is related, so I thought it would be better than the superuser, so I am using the CDT C ++ Eclipse plugin. I know how the editor changes colors for some things But is there a way to do that all the variables are different colors? For example in KDEValue, it sets the local variables and square variables in different colors and bold square squares. Can I copy it to CDT? Eclips provides some level of color customization for text editor syntax You can see it on the following: There are many elements, including the Window> Preferences> C / C ++> Editor> Syntax color code that can be changed, assembly, Comments, Preprocessor and Doxian Under the code, it is possible to change the color of some variable types, such as global variables, local variable announcements, local variable references, and parameter variables. But I do not think the code is capable of changing the color of each variable declared....
Read more

AJAX doesn't send POST query -

$ (दस्तावेज़) .ready (function () {function ajaxselectrss (rssurlvar) {var ajaxRequest; // वेरिएबल जो अजाक्स को संभव बनाता है! कोशिश करें कि {// ओपेरा 8.0+, फ़ायरफ़ॉक्स, सफारी अजाक्स अनुरोध} = नया एक्सएमएलएचटीपीआरइवेस्ट ();} कैच (ई) {// इंटरनेट एक्सप्लोरर ब्राउज़र्स {ajaxRequest = new ActiveXObject ("Msxml2.XMLHTTP");} पकड़ो (ई) {try {ajaxRequest = new ActiveXObject ("Microsoft.XMLHTTP");} कैच (ई) {// कुछ गलत चेतावनी ("आपका ब्राउज़र तोड़ दिया!"); वापसी झूठी;}}} // एक बनाएं फ़ंक्शन जो सर्वर से भेजे गए डेटा प्राप्त करेंगे ajaxRequest.onreadystatechange = function () {if (ajaxRequest.readyState == 4) {var ajaxDisplay = document.getElementById ('news'); ajaxDisplay.innerHTML = ajaxRequest.responseText;}} / / Var rssurlvar = $ (this) .attr ("title"); var queryString = "rurl =" + rssurlvar; var urltofile = "rssget.php"; ajaxRequest.open ("पोस्ट", urltofile, सच); ajaxRequ Est.setRequestHeader ("सामग्री-प्र...
Read more

wpf - Custom Message Box Advice -

Well, I'm using a custom window box that comes with some custom control boxes that accompany the text The producers who are displayed are called. I have a defined event, which has been subscribed through the original class, it gets burnt when clicking on the button. However, I can not see how to use it effectively, I would like to return one yes, whether yes or not, but obviously my code will continue to execute, so this Below is some example code to clarify the problem that the method has subscibed by clicking on the button. Message box window Public partial class custom message box: window {public representative message messagebox object sender, event events e); Public event messagebox handler messagebox document; Public Customs Box () {Initial group (); } Public Customsbox (String Message) {InitializeComponent (); This.txtdescription.Text = Message; } Public Customsbox (String Message, String Title, String First BTNtext) {Initialization (); This.lbltitle.Content =...
Read more