I am trying to set the checked status of a radiobutton in code, but it doesnt retain after the code-behind execution completes. It still shows the design time checked status.
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I have a couple of RadioButtons that are created dynamically. But after postback they don't retain their checked property. I also have some CheckBoxes and they work just fine using the same mechanism (code below). I have narrowed down the problem to the "GroupName" property. If I remove it, it works just fine. But I need the RadioButtons to be mutually exclusive.
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I have a project in VB.NET which is working fine which essentially has a Datagrid that has a TemplateColumn included which is a column of Checkboxes. The code to declare the datagrid is here...
<asp:datagrid id="dgDates" OnItemCommand="gridEventHandler" BorderColor="Black" BorderWidth="1px"
CellPadding="3" runat="server" AutoGenerateColumns="False" HorizontalAlign="Left" AllowSorting="True"
OnSortCommand="SortData" OnItemDataBound="gridItemDataBound">
<HeaderStyle Font-Underline="True" Font-Bold="True" HorizontalAlign="Center" ForeColor="Black"
BackColor="#D4D0C8"></HeaderStyle>
<Columns>
<asp:BoundColumn DataField="strParameterName" SortExpression="strParameterName" HeaderText="Parameter Name"></asp:BoundColumn>
<asp:BoundColumn DataField="dtParameterValue" SortExpression="dtParameterValue" HeaderText="Parameter Value"></asp:BoundColumn>
<asp:TemplateColumn HeaderText="Constant" SortExpression="blnStatic" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:CheckBox ID="cbStaticRolling" Checked="False" Runat="server" AutoPostBack="true"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
as you can see the Checkbox has Autopostback="true" but there are other things on the page which produce postbacks as well.
My Page_load has this in it, being called on every load of the page, postbacks included...
Dim strGUID As String
strGUID = Session("strGUID")
dgDates.DataSource = SqlHelper.ExecuteDataset(ConfigurationManager.AppSettings(Web. [Global].CfgKeyConnStringADMIN), "dbo.spRptGetSchedulingDates", strGUID)
dgDates.DataBind()
intNumberOfDates = dgDates.Items().Count
as well my code behind has the following code for the gridItemDataBound
Protected Sub gridItemDataBound(ByVal sender As System.Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs)
'hide the intRptSchedulingDatesID for each row in the checkbox's content style variable
If (e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem) Then
CType(e.Item.FindControl("cbStaticRolling"), CheckBox).Style("Content") = CType(e.Item.DataItem, System.Data.DataRowView).Item("intRptSchedulingDatesID")
End If
End Sub
everything you see sbove is working perfectly fine...in the sense that when I click one of the checkboxes, the page_load fires, the gridItemDataBound fires on DataBind() and when all is done, the checkbox retains the value that the user clicked the checkbox.
With all this exact same code converted to C#....the events all fire in the same order, but the checkbox selected value always clears...any thoughts??
I'd like to set one of a few radiobuttons to checked dynamically. They are called rbTheme1-rbTheme7. I can find them (for example the one called rbTheme3) with the code below but how do I set it to true at the loading of the page?
int buttonID = 3;
string buttonName = "rbTheme";
(RadioButton)themePick.FindControl("buttonName" + buttonID.ToString());
well i have two pages 1st Page "Medical Examination" in this page i have two radio buttons "Man" or "Woman"
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i am having one online test application in default page i have 1st question and 4 options will come and i am having two linkbuttons one is next and the other is previous and after selecting the answer of 1st question and after clicking the next button it is goin to 2nd question that is in the same page and error is this one if i select 1st answer of 1st question the same answer is repeating in 2nd question i want to uncheck this and in 1st question the answer selected should be checked only.
View 4 RepliesI am using visual C# and trying to create a web form (form.aspx for example).The issue is that i'm using two radiobuttons and two textboxes and i want the second textbox to hide if the first(or the second, i don't care) radiobutton is checked(selected).I am typing the below piece of code:
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I have 4 radiobutton in my page
1-RbtW
2-RbtE
3-RbtN
4-RbtS
I want if users checked RbtW it insert to database "West"
If checked RbtE it insert to database "East"
If checked RbtN it insert to database "North"
If checked RbtS it insert to database "Soutا"
How i can do it?
I am creating a control that inherits from the RadioButton, so that I can set the GroupName property manually. Everything is working okay apart from the fact that when the page posts back, the RadioButton becomes unchecked if it has previously been checked. This is the first time I've tried inheriting from controls, so must be doing something really silly. I would welcome anyone helping me to improve my code so that the control's Checked value persists through postbacks. I am causing a postback using a button, not the actual RadioButton itself, if that makes any difference. Here is my code:
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I have a radiobutton and if it is checked "Yes", then the three textboxes that are disabled in default will be enable. Now that this textboxes are enabled I want this to be mandatory. How could I do this via javascript or code behind? If I do it in code behind then autopostback is need which is unnecessary.
<div>
So I've got three RadioButtons, They're not in a RadioButtonList because I need to add some textboxes next to each of them.I've added a GroupName, and on the front end they behave as expected. ONLY ONE appears checked at a time.However in the code, if I do:
RadioButton1.Checked = true;
RadioButton2.Checked = true;
RadioButton3.Checked = true;
I would expect only the last one, RadioButton3, to be checked, because they all belong to the same group. This is not the case. All three evaluate to true.... how can that be?
I have group of radio buttons, each group ranges from 5 - 27 radiobuttons. And if any radio button in a group is checked I store 1 in db else I store 0. Now I'm checking each radiobutton using if loop to see if they are checked and set database value. I'm also trying to use the code below. Is there a good/better approach to check if they are checked or not?Current code:
'rname is radiobutton prefix for a given group
'cnt is number of radiobuttons in the group
Private Function RadioIsChecked(ByVal rname As String, ByVal cnt As Integer) As Integer
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I've a list page with check box for each row.When records are selected by checking the Checkbox, it will open a pop-up window for those selected records .When the pop-up is closed, i want to retain he checked status of the checkbox in the base page, just to keep track of what i selected. But curently it is not happening.
View 3 RepliesI have a gridview where i have a radio button. What i need is to on the selection of the radiobutton i have to find the datakey of the gridview. Also one more issue with that is , i can select more than one radio button, which should not happen.
View 1 RepliesI have a situation where I need to databind a string array to a CheckBoxList. The decision if each item should be checked, or not, needs to be done by using a different string array. Here's a code sample:
string[] supportedTransports = ... ;// "sms,tcp,http,direct"
string[] transports = ... ; // subset of the above, i.e. "sms,http"
// bind supportedTransports to the CheckBoxList
TransportsCheckBoxList.DataSource = supportedTransports;
TransportsCheckBoxList.DataBind();
This binds nicely, but each item is unchecked. I need to query transports, somehow, to determine the checked status. I am wondering if there is an easy way to do this with CheckBoxList or if I have to create some kind of adapter and bind to that?
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 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'm writing an HTTP handler in ASP.NET 4.0 and IIS7 and I need to generate a file-not-found condition.
I copied the following code from Mathew McDonald's new book, Pro ASP.Net 4 in C# 2010. (The response variable is an instance of the current HttpResponse.)
response.Status = "File not found";
response.StatusCode = 404;
However, I found that the first line generates the run-time error HTTP status string is not valid.
If, instead of the lines above, I use the following:
response.Status = "404 Not found";
Then everything seems to work fine. In fact, I even see that response.StatusCode is set to 404 automatically.
My problem is that I don't want this to fail on the production server. So I'd feel much better if I could understand the "correct" way to accomplish this. Why did the first approach work for Mathew McDonald but not for me? And is the second approach always going to be reliable?
I have a GridView that I was previously populating via an ObjectDataSource, and this code was working perfectly (ie, when the checkbox was checked Checkbox.Checked = true):
CODE BEHIND:
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<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkRDR1" runat="server"/>
</ItemTemplate>
</asp:TemplateField>
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Dim checkbox As CheckBox = CType(row.FindControl("chkRDR1"), CheckBox)
I have a name textbox, label, usercontrol, submit button in my page inside a master page. when the button is clicked iam using the label to show the user "Please enter name". But any postback happens inside the user control then this lable gets cleared, how to retain the value on the postback of the user control.
View 2 RepliesIn the code I have here, I need to set the checkbox state from a database but I dont know the properties:
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I created checkbox in a gridview. I hope to retain the checkbox value after postback.
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I have a querystring created that contains + character. This is not a space character but an actual + sign in an encrypted string. Below is one example...
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My code when reads above QS, I am losing + character in it if I use URLDecode. If I remove URLDecode, and just read as Querystring method, I lose the '=' character... and it gets replaced by %3d or like charcters...
What I am looking for is to save above QS in a variable... the way it is.. PAXGR52H8SS4bSWTn+HyZg==
How can I save QS as is in a variable?
I have a treeview in my .aspx: <asp:TreeView ID="tvDocCatAndType" runat="server" /> Not much else going on in the page -- two <asp:LinkButtons> and one <asp:Label>; the page is a child of a master page, so these controls are within a <asp:Content> control. I populate the treeview in code -- just 3 node levels, including the root node. All nodes have checkboxes, and I initialize all node.Checked to true. I have some Javascript to do the usual check/uncheck up and down the tree as parent and child node checkboxes are toggled.
No matter how many checkboxes I clear in the UI, on postback every single node has node.Checked = true regardless of the state of the checkbox in the UI. This is not the first time I've used a treeview, but I've never had this problem before. I created this page by light adaptation of an earlier project that works fine.
