I am working on a datagrid that has a column with checkboxes... the checkboxes should be checked when the page loaded. The problem is that whenever I trigger a postback, all the checkboxes will be unchecked!!
I don't know what is causing this or what should I do to prevent it from unchecking the checkboxes.
I tried some of the example from the web, but all of them will check/uncheck all the checkboxes in the form, NOT only in the repeater. Is there a way to implement this and only apply to repeater.
View 5 RepliesI am have a page with a couple of dropdowns which serve as criteria for a select SPROC. Once a selection is made in a drop down a panel is shown which contains gridview whose rows have been returned by the select SPROC.If you close the panel and change the drop down selection and then redsplay your panel the data from your prior selection is still displayed in the gridview,
unless you page to the next group of records.
i'm using a gridview and has a column of checkbox that is within a template field.
I want to do it in C# but I only found this code in VB
[Code]....
i have repater and inside repeater i have checkbox
this is the code
[Code]....
[Code]....
[Code]....
my proplem when i check checkbox this event checkBox_CheckedChanged its fired but when i uncheck checkbox its not fired.
i am trying to do is set my page up so that when a user clicks on a row in the gridview a hidden checkbox is unchecked... i am new to asp.net but never thought something as simple like this could be so difficult to work out... i've been on it for around 5 weeks now, i started this on my first day of the website, and have actually designed and written the entire site while still trying to work this out... i first did this on the selectedindexchanged event:
Dim cbox As CheckBox = CType(GridView1.Rows(GridView1.SelectedIndex).FindControl("CheckBox1"), CheckBox)
If cbox IsNot Nothing Then
If cbox.Checked = True Then[code]....
problem is the above code throws up errors...! once i take out the where clause it unchecks every checkbox and writes it back... is there a way i can say just uncheck the selectedrow checkbox and update that one row???
i'll admit there are better ways of doing this, and i'm sure the above code is a little messy,
I have 2 textboxes and a submit button inside a .net composite server control. I tried to only postback when submit button is clicked. I set autopostback = false for both textboxes. But either one still trigger submit button's onclick event by hitting "Enter" inside textbox. How can I stop postback by enter key?
View 2 RepliesI'm having 1 or 2 problems with a checkbox.
I have a form that can be either submitted or saved. Within this form there's a number of checkboxes.
I've succesfully achieved this on a textbox (postback) but don't know the syntax for checkboxes
My questions are: how would I open the form with these checkbox's previously checked? In addition to how do I insert the value from a dataSource:
[code]....
I am trying to write some code where it sets the imageUrl of an ASP Image from the codebehind (on a timer), but it does not change it on my screen (its changing in debug view). I assume this is because I need to postback everytime I change the image. Problem is, I cant trigger the postback from CodeBehind so that it will change. How do I do that?
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I am so used to win32 forms -- Just started again with ASP websites.
i made a checkbox templatefield in gridview that let me select the rows wanted ...and i have a button to do something for all rows selected ...my problem is after click button i want unchech all checkbox in gridview ...i wrote this code but not working:
protected void btnPaye_Click(object sender, EventArgs e) {
//TextBox1.Text = "";
foreach (GridViewRow gvr in gdfacture.Rows) {
if (gvr.RowType == DataControlRowType.DataRow) {
CheckBox cb = (CheckBox)(gvr.FindControl("chkSelect"));
[code]....
i have a gridview with templatefield in templatefield there is a checkbox and in there are textboxes.
i want when i check the checkbox then only that row can active and the textboxes are enabled true when deselect the checkbox then that row should enable false.
I am using a GridView Control to display multiple fileds with 0's and 1's.
I am using template fields where CheckBoxes are used.
Where exactly and how do I apply the Logic to get a checked CheckBox when field Value=1 and unchecked CheckBox when field Value=2 .Also some times to be able to write a YES where fieldValue=1 or NO where filedValue=0
Do I apply this logic using asp or C#? How?
I have around 8 user controls on a page with a form in each of them. I have a dropdown list that allows you to select a form, with a selectedindexchanged event that hides the current form and shows the requested form.
There is some javascript that needs to fire when each form loads. Now, when you click on a form for the first time, the javascript fires as it should, but if you click the dropdown to change the form, then click back to a previous form, the javascript doesn't fire (because the user control is already loaded).
Is there anything I can do to trigger a postback, or reload/refresh the user control whenever an option is selected from the drop down?
I need to trigger a postback or self refresh a user control from one of the functions in the same user control.
Problem is that I am setting the selected value of a dropdown control in this usercontrol but it does not actually show up until after a postback.
This I came to know after I found that the said drop down shows the current value only after I click on another button.
I need to do this on the server side in the function given below:
public void FillDropDown()
{
FillProgramList(select);
//if (Request.Cookies["prgname"] != null)
//{......
I have four server-side panel controls that, when clicked, trigger some jQuery animation. I'd like them to also trigger some AsyncPostBack as well. Is there an easy way to code that server-side? I know that the Panel controls don't have a Click event.
I could always trigger the AsyncPostBack via JavaScript, but that seems less than ideal.Secondly, (and I don't think this is possible), right now I use a QueryString and cookie to track a PreferredCampus selected. We'll be migrating this to be a subdomain. There's no way to change the URL without full-page postback, correct? What I can do is change the cookie setting via the partial-page PostBack I'm describing above, and then have the subpages catch and redirect to the correct subdomain.I'd really like more information about the first part.
why when I create a checkbox using HTML.CheckboxFor the values remain after postback where as if I just create a simple HTML checkbox in HTML after postback the value is no longer there?
What is the difference between HTML.Checkbox vs. an HTML checkbox? Why does one retain the values after postback and one does not?
I do not have access to the <body> tag because it is in masterpage. I want to trigger an automatic postback when the page load as:
<script type="text/javascript">
window.onscroll= __doPostBack("<%= button.ClientID %>", "");
</script>
where should I put this code? I get a Not implemented JS error if I place it just before the </asp:Content> tag.
PS: I need to trigger that postback because I want to populate an updatepanel when the page loads
I have a web flow (asp.net) which has a drop down and a check box.
When the check box is ticked, I need to disable some fields in that form.
When a specific value is selected from the check box, I need to disable other fields.
I specify the checkbox like this:
<%=Html.CheckBox("IsResponseUnavailable", Model.IsResponseUnavailable)%>
And the drop down like this:
<%= Html.MyDropDownList(string.Format("Questions[{0}].Answer", i), (IEnumerable<SelectListItem>)ViewData["Periods"], Model.Questions[i].Answer)%>
Where MyDropDownList is an extension of Html.DropDownList
I've heard about auto-postback - but unsure how to use it
This is my script for the draggable and droppable
<script type="text/javascript">
$(function() {
$(".Source li").draggable({
[code]...
Now I want to access the value of the "TxtItemId" control in the code-behind through a postback. How do I go about doing this ? BTW, this is for a scenario where a person will drag an item from a panel into a shopping cart and I need to capture the Id of the dropped item and trigger a postback after the drop to update the quantity of that item in the cart.
I want to create a dynamic, role-based tab control that doesn't trigger a postback when the user switches between tabs.
View 3 RepliesI have the following in an aspx page:
<td colspan="2">
<% DisplayParties(); %>
</td>
In the code behind for the aspx page, i have this (e.g. I build HTML for the checkboxes):
[code]....
Not my proudest moment, but whatever. The problem is that when this page posts back via some event on the page, I never get these tags in the Request.Form collection.
Is this simply how ASP.NET works (e.g. only server-side control post back) or am I missing something simple.
I am trying to using update panel that have upload file when it click and showing the updateprogress
Here is the design
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="upTest">
<ProgressTemplate>
Updating!
[Code] ...
So how I can get the value of the file once the button click?
In a datalist i've got a checkbox with a autopostback.
But there is an error if i run it:
System.InvalidCastException: Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.CheckBox'.
There are 40 checkboxes, if the person selects 1 i need to deselect all others. Very easy, but how to use correct coding for it?
protected void chkWerkblad_OnCheckedChanged(object source, EventArgs e)
{
CheckBox s = source as CheckBox;
if (s.Checked)
{
foreach (CheckBox c in s.NamingContainer.Controls)
{
if(c !=null)
c.Checked = true;
}
}
}
I have a gridview and now I need to add a column with checkboxes.
The checkboxes need to be checked or unchecked depending on the data retrieved.
have a gridview with a bunch of checkboxes. I would like to restrict the selection based on a value I get back from the database. I am able to do this on the serverside but it is very cluncky. Is there a way I could do that using javascript and ajax or just a more elegant way to approach this. The gridview is in a usercontrolMy code right now -
[Code]....
My selectioncount code is as follows - Protected Sub selectionCount(ByVal sender As Object, ByVal e As EventArgs)
