If we are using ASP.NET Radiobuttonlist in our page it becomes a little difficult to find the instance of it through Javascript because it is rendered in a different way in the browser ( the code is reproduced below )
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How do you set a specific width for a radiobutton in a radiobuttonlist?
View 6 RepliesI use radiobutton in my page
<asp:RadioButtonList ID="RBLType" runat="server" RepeatDirection="Horizontal" TextAlign="right"
CssClass="Drbgalary">
<asp:ListItem Value="دارای گالری" Text="دارای گالری"><span style="color:#676767">دارای گالری</span></asp:ListItem>
<asp:ListItem Value="دارای محصول" Text="دارای محصول"><span style="color:Red">دارای محصول</span></asp:ListItem>
</asp:RadioButtonList>
[code]....
but I run page below error happen.Object reference not set to an instance of an object.An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Source Error:
Line 91: if (_dr["storetype"].ToString().Trim() == "دارای محصول")Line 92: {
Line 93: RBLType.Items.FindByText("دارای محصول").Selected = true;Line 94: }
Line 95: else {
I have 2 radiobutton list in my page when I didn't select item from radiobuttonlist it make below error
Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error:
Line 834:
Line 835: string RBLsh = RBL2.SelectedItem.Value;
Line 836: string RBLgh = RBL1.SelectedItem.Value;
I have an update page with radiobutton "Alternate Addresses". If the radiobutton has "Yes" value, There would be altenate addresses for client. If radiobutton has "No" value, there won't be any alternate addresses. In update page, if supplier changes radiobutton value from "Yes" to "No" and clicks asp:Button "Update", all alternate addresses will be deleted. I want to show a confirm messagebox on Update button click. But i am not being able to retrieve radiobutton selected value in javascript.
var list = document.getElementById("radios"); //Client ID of the radiolist
var inputs = list.getElementsByTagName("input");
var selected;
for (var i = 0; i < inputs.length; i++)
{
if (inputs[i].checked)
{
selected = inputs[i];
break;
}
This code works fine with html buttons. But I want code for asp:Button onClientClick.
I am using a asp.net radiobuttonlist.
<asp:RadioButtonList ID="rbtnAEreq" RepeatDirection="Horizontal" runat="server">
<asp:ListItem Text="Yes" Value="true"></asp:ListItem>
<asp:ListItem Text="No" Value="false"></asp:ListItem>
</asp:RadioButtonList>
on buttonclick event i want to validate the radiobuttonlist. My condition is either yes or no should be selected. How to do it in javascript.
I am developing a website using asp.net and C#.I am using a RadioButtonList control. The code snippet for RadioButtonList is shown below
<asp:RadioButtonList ID="RLCompareParameter" runat="server"
RepeatDirection="Horizontal" meta:resourcekey="rsKey_RLCompareParameter"
AutoPostBack="True"[code]...
There is a button in the same page. While clicking on that button i want to display an alert message based on the selected radio list item using javascript. Some part of my javascript function is shown below
var RLCompareParameter = this.document.getElementById("<%= RLCompareParameter.ClientID %>");
if (RLCompareParameter.SelectedValue == "Forms") {
if (document.getElementById("<%= lbAvailableForms.ClientID %>").value == "") {[code]...
But the if(RLCompareParameter.SelectedValue == "some value") always false. i think there is no attribute like selected value for RadioButtonList control.
I am trying to validate that each radiobuttonlist has been selected. the radiobuttonlist is dynamically created from a sql database. The following line errors out "if (MyRadio[j].checked) {", the error is "checked' is null or not an object". The following is the code.
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" runat="Server">
<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0" CssClass="ajax__myTab" Width="100%" ScrollBars="Horizontal">
<cc1:TabPanel ID="TabPanel1" runat="server" HeaderText="" Enabled="true">
[Code]....
I'm posting this here because my question isn't really about the javascript itself but about the workings of the RadioButtonList control. I have a webforms application where a several radiobuttonlist controls are rendered dynamically from server side code. I want to also render an undo button that will clear the associated radiobuttonlist. I can get it to work fine using an image button that does a postback. However, I'd like to do it without the postback, waiting until the entire form is filled out before posting back via a submit button. I've been able to get it to clear the radio buttons via javascript. However, when I click submit to post back to the server, the server thinks the radiobutton is still selected. Here's a condensed version of the code thatrenders the controls.
[Code]....
At run time, the radiobuttonlists and their associated undo buttons are rendered just fine. If the user selects an option from a radiobuttonlist and then decides they didn't want to answer that question, they can click the undo button and in the browser the correct radiobuttonlist is cleared. However, when they submit, it still saves whatever value they had clicked before to the database. It's as if there is something else on the page that is holding on to the selected value in the radiobuttonlist even after the javascript clears the control itself.
I'm at my wit's end when it comes to this. JavaScript definitely isn't my strong suit and I've been trying to google for a solution. Here's the code I have:
[Code]....
What I want to do is whenever you click a radio button on the Group1Most RadionButtonList, it will disable the corresponding radio button on the Group1Least RadioButtonList. The problem is I can't figure out how to select an individual radio button within the RadioButtonList.
I have a scenario where a RadioButtonList needs to be in disabled mode by default and then on some event on client side, say, when a checkbox is checked, it needs to be enabled.
But once I disable it from code-behind, the javascript part of enabling it doesn't work.
if radio button selected as process in a row then i need check text box is empty or not using jquery or javascript in gridview?
View 1 RepliesI have used a radiobuttonlist to enable/disable the textbox in Grid View. I did this using javascript onclick event.
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It is working fine when the page get refreshed too.
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Then in a scenario, I have removed the radliobuttonlist items (items 2 and 3) dynamically. For the first time when its loaded its working without flaws. After a page is refreshing due to any serverside events, the javascript to enable/disable textbox is not working.
[Code]....
I have verified the HTML file, the radiobuttonlist is loaded without the onclick event.
I was wondering, is there a way to set selecteditem in RadioButtonList using javascript (Client-Side) ? Is there an easy way to do that ?
View 1 Replies[Code]....
gridview radiobuttonlist onclick javascript?
There seem to be a few issues in the way Razor views are designed and the code generated
1. Descendants of WebViewPage are forced to override Execute() (since it is abstract) but that method is never called. Why?
2. The virtual method ConfigurePage is never called in descendants that override this method.
3. CreatePageFromVirtualPath is no longer virtual. This was the one method that gave us access to the Layout Page (Master Page) instance. Now we no longer have this access. Why was this done?
How can one get access to the instance of a Layout page?
How can I access the HttpServerUtility instance in ASP.NET MVC controller?
View 1 RepliesI have a radio button list. I want to get its selected item text and value client side suing javascript...
View 1 RepliesBasic question - is it possible to access the current Page from a static class in ASP.NET?
I am thinking no, as google turns up no results.
For some reason, I can change the property of a control in javascript, but then when their is a postback, it seems as if the control property ignores how I have set the property in javascript and goes by its last asp viewstate.
View 1 RepliesI have a radiobuttonlist inside a datalist itemtemplate and i need to bind the radiobuttonlist dynamically from database I have tried to bind it inside itemdatabound event of datalist but it the result is always duplicated according to the fields in teh database.
for more information:
the database has two columns one for questions and the other is for choices , for the first question with id lets say 1 there are 4 choices, when the radiobutton is binded the result appears to be 4 times duplicated ?
Can I access a class instance declared on the master page from a content page?
View 4 RepliesI've read several other questions on this topic (here, here, and here), but have yet to see a great answer. I've developed my fair share of data access layers before and personally prefer to use instance classes instead of static classes. However, it is more of a personal preference (I like to test my business objects, and this approach makes mocking out the DAL easier). I have used static classes to access the database before, but I've always felt a little insecure in the appropriateness of such a design (especially in an ASP.NET environment).
Can anyone provide some good pros/cons with regards to these two approaches to developing data access classes with ADO.NET providers (no ORM), in an ASP.NET application in particular. Feel free to chime in if you have some more general static vs. instance class tips as well.
In particular, the issues I'm concerned about are:
Threading & concurrency
Scalability
Performance
Any other unknowns
I have this specific task: I have a contacts table, and when users view a specific contact in details page I want to display a button in the page (doesn't matter anywhere, but inside the detailsview control next to the "edit" hyperlink is better), when it's clicked I want to grab all the info of this contact instance and write it to Response so user can save it through the save file dialog. So far I have two problems1. How do I access the contact? it's displaying on the page but when I tried detailsview.dataitem it returns null, e.result in the datasource selected event handler also returns null...2. I can get the button (outside the detailsview control) to trigger the file download dialog, but how do I achieve the same thing if the button is placed inside the details view which is in turn inside a updatepanel?
View 1 RepliesI creating 3 tier arch wpp in VS 2010. I added the BusinessAccessLayer refernce in Presentation Layer. and I created DataAccessLayer[DAL] and ORM [DBModel.DBML]. when i try to create the instance for the Table in presenation layer[default.aspx], The Table name is not shown.After adding the DataAccessLayer refernce in the presentation layer, the table name[MM_User] instance are shown.Is it the right method [Adding the DAL refernce in Presenation Layer]? If not, whats the solution for for accessing the instance of the tables[MM_User].Is it related to the Creating the DataContextWrapper class in DAL?
View 5 Replies