RadioButtonList Doesn't Set Correct Selected Item On Load?
Apr 13, 2010
I have this code:
<asp:RadioButtonList ID="rblExpDate" runat="server" >
<asp:ListItem Selected="True" Text="No expiration date"></asp:ListItem>
<asp:ListItem Text="Expires on:"></asp:ListItem>
</asp:RadioButtonList>
that I would like to be always, on page load, to mark the first option ("no expiration date"). However, if the user marks the second option and reloads, the second option is selected, even though I do this on page load:
rblExpDate.Items[0].Selected = true;
rblExpDate.SelectedIndex = 0;
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Apr 24, 2012
II am populating a radiobuttonlist in code on page load, although not when postback is true (I've checked this by the way).
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When I select an item, the postback happens, the populating does not happen, and the selection reverts back to the first item, which was never selected.
Nowadays I have the knowledge to do this in javascript, but I would prefer not to. It can't be that it should work like this, can it? The control would be useless. I want the index that is selected.
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Jan 13, 2011
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Dec 22, 2010
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Aug 27, 2013
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Dec 30, 2013
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Jul 7, 2010
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Jul 16, 2012
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Jul 4, 2010
I am trying to get a drop down and a form view to work together. I've never used form views before. I also am using the entity framework to do everything. This is also my first time with it.
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i use a dropdownlist in a page, with its items taken from a mysql database
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Mar 17, 2011
In an ASP.NET 2.0 project I've got a RadioButtonList. I'd like to disable one of the items in this list, but when I change the Enable property of an item to false it just wrappers the item with a span instead of disabling the Input when rendered to Html:
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This works Fine on IE9 but on FF4 the radio button is still enabled. Or is the only way would be some Javascript?
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Aug 10, 2010
I have a table cell with a RadioButtonList. When each item is selected, the SelectedIndexChanged event is supposed to fire so the app can populate a related listbox. The problem is it stopped working. Now if I selected the first entry 'Division', the event never fires. I put a break-point on the event handler and it gets called for the other entries but not for Division. I'd believe it if some other code is interfering, I just don't know where to start looking.
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private TableCell foo()
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hierarchyLevel = new RadioButtonList();
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hierarchyLevel.Items.Add(DistrictItem);
ListItem AreaItem = new ListItem();
AreaItem.Text = "Area";
AreaItem.Value = "afe_supt";
hierarchyLevel.Items.Add(AreaItem);
ListItem ForemanItem = new ListItem();
ForemanItem.Text = "Foreman";
ForemanItem.Value = "afe_frmn";
hierarchyLevel.Items.Add(ForemanItem);
ListItem AfeCodeItem = new ListItem();
AfeCodeItem.Text = "AFE Code";
AfeCodeItem.Value = "afe_code";
hierarchyLevel.Items.Add(AfeCodeItem);
ListItem PropertyItem = new ListItem();
PropertyItem.Text = "Property";
PropertyItem.Value = "prop_sub";
hierarchyLevel.Items.Add(PropertyItem);
TableCell cellforHierarchyLevel = new TableCell();
cellforHierarchyLevel.ID = "hierarchyLevel";
cellforHierarchyLevel.Controls.Add(hierarchyLevel);
hierarchyLevel.EnableViewState = true;
hierarchyLevel.AutoPostBack = true;
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return cellforHierarchyLevel;
}
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Apr 7, 2010
Is there a way to set tab order on each ListItem within a RadioButtonList? The listitem does not have a TabIndex attribute, so can this somehow be done via javascript?
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Apr 4, 2011
I have a RadioButtonList with some fixed element and a default selected. If I uncheck the selection with javascript, on postback the SelectedIndexChanged event is not fired.
I would expect that the SelectedIndexChanged is called because the index is changed to -1.
this is the Asp.Net code
<asp:RadioButtonList ClientIDMode="Static" ID="RadioButtonList1" runat="server"
onselectedindexchanged="RadioButtonList1_SelectedIndexChanged">
<asp:ListItem Value="1" Selected="True"></asp:ListItem>
<asp:ListItem Value="2"></asp:ListItem>
</asp:RadioButtonList>
and the jquery code
$('#RadioButtonList1 :radio:visible').attr('checked', false);
As far as I know, the stage of data collection from the submit of the form is handled by IPostBackDataHandler.LoadPostData method.
I derived a class from RadioButtonList to verify when LoadPostData is called and I noticed that when non of the radio button is selected the method is not called and the same for SelectedIndexChanged event.
it seems that if the key of RadioButtonList is not present in the Page.Request.Form.Keys array, the LoadPostData is not called.
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Feb 28, 2011
How to get the selected item from the listbox in the selected index changed event. I tried: Label1.Text = ListBox1.SelectedItem.Text; It is giving me object set to null reference.
foreach (ListItem item in ListBox1.Items)
{
if (item.Selected)
{
//lblResults.Text += item.Text + "
";
Label1.Text = item.Text;
}
}
No use, no value coming in to label.
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Aug 12, 2010
I am working with a model which has the following, basically a Project can have a score between -5 and 5 and I'd like to show a dropdownlist of the available options, i.e 5,4,3,2,1,0,-1,-2,-3,-4,-5.
[Required(ErrorMessage = "Score is required")]
[Range(-5, 5, ErrorMessage = "Score must be between -5 and 5")]
[DisplayName("Score")]
public double Value
{
get { return value; }
set { this.value = value; }
}
What would be the best way to accomplish this using a dropdown list and how can I make the score of 0 the
default selection?
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Oct 25, 2010
I use jquery in a page that shouldn't refresh when radiobuttonlist items are selected.(without using AJAX)
how can i call selectedindexchanged event for accessing items using by javascript?
[code]....
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Feb 8, 2010
i have wrote following code but it will not fecth selected value:
Table tab =
new Table();
int j = 0;
[code]...
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Dec 3, 2010
I have a drop down list control populated with items and some code to take the currently selected item value. The problem is I only get the value of the first item in the list regardless of what item is actually selected. Here is my code to populate the drop down:
protected void displayCreateCategories()
{
StoreDataContext db = new StoreDataContext();
var a = from c in db.Categories
orderby c.Name
select new{catName= c.Name,
catId=c.CategoryID};
ddlCategory.DataSource = a;
ddlCategory.DataTextField = "catName";
ddlCategory.DataValueField = "catId";
ddlCategory.DataBind();
}
To get the value of the currently selected item which in my case is always of type integer I do label1.text=Convert.toInt32(ddlCategory.SelectedValue); I get the selected value, but it is always for the 1st item in the list. I'm pulling my hair out over this.
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Nov 9, 2010
I am using a radiobuttonlist in my project. Where i want to hide one of radiobuttonlist item visible true or false. according to the selection of the country. I am able to hide the radiobutton but the corresponding text is still displayed. How to hide both radiobutton and also the related text.
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