GridView Loses Checkbox Value On Page Changed?
Apr 7, 2010
Ive added checkbox to each gridview row like this:
[Code]....
I grab value of selected checkboxes like this:
[Code]....
So. It works fine, but when i change page of gridview, previous page loses selection and set all checkboxes to false.
Probably this is because paging causes postback, but still, is there an easy solution to rewrite my code, so it will work with paging?
Maybe theres a way to disable postback on page change?
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Sep 19, 2010
I have a grid view where the user can change pages at either the top or the bottom of the grid view. I want the view to go back to the top whenever a user changes the page, whether they are changing from the top or the bottom. I've tried using anchors and javascript to achieve this but it does not work. The javascript is executed and the user is taken to the top of the gridview, this can be seen by placing an alert after the javascript to change the view. But the last thing that happens on the page change is that the window is returned to it's previous position (the bottom of the page). Is there any way of doing this?
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May 26, 2010
I have a rather short (~30 item) CheckboxList control and when it changes, I need to know which Checkbox changed.
I've got the CheckboxList set to AutoPostBack so I know only one Checkbox changed, but I don't know how to detect which one.
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Feb 2, 2011
I probably should not bother writing these posts at this time of day. I have a gridview control on a web form page. Within the gridview I have
<asp:BoundField DataField="phone" HeaderText="Phone Number" />
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From the documenteationI see, it seems to me that the checkbox I have here should be bound to the data field BIT on SQL Server. The gridview displays a checkbox. Lovely. But when I click the grid's edit, check the checkbox and click the grid's update, the value is not saved/changed.I thought this was straightforward asp control.
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Mar 18, 2010
When we set allowpaging=true and specify the pagesize=xx, and when we change the page of the gird view then, does paging in gridview make a database call when its page gets changed ?
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Jan 14, 2010
I have a gridview with paging. I have a style set for a selected row (highlights the row in light orange). What i would like to do is that each time a user chamges the page, the selectedIndex & selectedRow automatically becomes the 1st row of the selected page. So i would like to see the orange highlight on the 1st row of the page to indicate that the row has been selected.
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May 7, 2015
when i checked the checkbox in parent gridview, all checkbox in child gridview will be checked.
how can i select the checkbox of child gridview checkbox in the when i select the checkbox from the parent gridview?
code behind
protected void OnCheckedChanged(object sender, EventArgs e)
{
[Code].....
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Jan 17, 2011
i have gridview with page index 1,2,3,....... & having 5 records per page with 2 columns. i want to check checkbox from one page & also from 2nd page. for ex when i click on 2 checkboxes in 1st & change pageindex, again select one checkbox & again change pageindex to 1st then 2 checkbox in 1st page must be checked i.e their value must persist.
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Apr 6, 2014
I have this interface of multilevel grid built in VStudio 2010 using asp.net.
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please see the picture
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Apr 5, 2010
I try to postback my page to the server using ctrl+Enter sequence.Without UpdatePanel it works well, but it works only two times inside updatepanel and then my control loses the focus. So I have some questions:
1. Why my control loses the focus if it is located inside updatepanel?
2. What is the best way to use ctrl+Enter sequence to post the page to the server?
Here is my code:
[Code]....
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Feb 5, 2011
I have a Gridview with edit and update feature enabled. It displays the data correctly but when I click on the Edit linkbutton(to edit the data), I get the error "Object reference not set to an instance of an object".
I tried debugging and found that the row which I click (say editindex is 1) loses its value. I could identify this while debugging the code, when the code flow moves to the rowdatabound event, the label (or for that matter any control in the rowdatabound event) shows a null value and eventually errors out.
I am unable to figure out as to why the control specified in the rowdatabound event loses its value when editing. Note: The lost valueow data is the one which I tried editing.
I am attaching the code which I have written for the rowdatabound event.
[Code]....
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Apr 5, 2010
In my access datasource, I have set the selectcommand to what the user desires via a DDL. So the user chooses say, all names beginning with "B". But as soon as user clicks to page to the next page, the filter is gone. What is the way to preserve the filter. I have only merely rebound the gridview in the Pageindexchanging event which obviously is not doing the trick. Does this call for a session var to hold the users choice?
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Jun 3, 2010
I noticed that with some of the data controls (like gridview and listview) the page loses focus when you click edit, update, etc. So if your data control is somewhere lower on your page, you'd have to scroll down to get to it again. Is this normal or is there a way to keep the focus or location on where you were previously?
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Oct 1, 2010
I have a GridView that has approximately 800 records. I have a search feature that finds a record and focuses to it. When I click Edit for that record, the Gridview flashes and goes back to the 1st row. If I search for the record again it is in edit mode. Is there some setting to keep focus where it is? I added the following code to try and keep focus, but it doesn't work.
[code]....
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Feb 21, 2010
I have a gridview with columns 'Edit', 'Delete', 'View Results' and other details. The 'Edit' column opens a modal popup to edit the record. The 'View Result' column is in a login view and this column is only visible to users belonging to the group 'Manager' as below:
[Code]....
When the page is first loaded, the hyperlinks are displayed correctly. however, after editing a record and saving the changes, the 'View Results' column loses the hyperlink.
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May 8, 2010
I am facing one strange problem,I have a gridview in which the last two columns have checkboxes and on those checkboxes click event I am doing some database operations.I also have one checkbox that is outside the gridview which actually shows or hides some of the gidview columns.This was all working well but now I have shifted that grid to a user control because I have to use it in two pages.The problem now is,When the page first loads and I click the check box or any control in the page that is outside the grid then it works perfectly.But once I click any of the check box within grid view column then its behavior chages, now even if I click the checkbox that is outside the grid then also the checkbox_CheckedChanged event of the checkbox that is whithin gridview is fired.That checkbox event then behaves something like a page_load event that is called for every page load and for every event with in the page after it is called once.
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Oct 14, 2010
I have searched and searched and unable to find an easy to understand answer with a sample of what I am after. Apologies I am new to ASP and programming VB.
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Aug 20, 2010
I want to select all checkBox in Gridview when click to header checkBox.I have created design such that CheckBox is not available to header of Gridview.It is in other table. Below is design of gridview.
[Code]....
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Jun 29, 2010
I am dynamically binding a typed list to a GridView control.
The Grid View Control is in an asp.net page that is wrapped in an asp:UpdatePanel (Ajax).
The first column contains a checkbox control.
Only one checkbox may be checked in this column.
If the user checks a checkbox, all other checkbox must be unchecked.
I am trying to achieve this using client-side script without success.
In the handler for the GridView's RowDatabound event, have attempted to add an attribute to the CheckBox contained within the cell.
[code]....
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Dec 30, 2010
i have 5 checkboxes in webform and textbox1. when i search the record using the date specified in textbox1
when i enter 11-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox2, and checkbox3 will be disabled and unchecked. and after tat when i type 13-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox4, and checkbox5 will be disabled and unchecked .....and all the checkbox of 11-Dec-2010 will be enabled for 13-Dec-2010 I M CURRENTLY WORKING IN ASP.NET (VB)
My Datbase structure :
ID Name Seats Date
1 Sumit 1,2,3 11-Dec-2010
2 Mili 1,4,5 13-Dec-2010
Example of this is that site have a look to know more : what i want : [URL]
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Sep 19, 2013
I want to send gridview multiple selected values (using Checkbox) to another page gridview..on click of a button.
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Mar 5, 2014
I want to know how to select only one checkbox and all other will get disabled and when unchecked all will be enabled inside a gridview.
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Dec 31, 2010
I just developing my web design skills.
I have a Datagrid with 2 textbox template columnsand two checkbox template columns. I have two other Textbox controls and two CheckBox controls. I have an Add button.
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Jun 8, 2010
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,
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Jan 7, 2011
I have this function:
[Code]....
I set itemsRead and startRowIndex in ViewState:
[Code]....
This is my PageIndexChanged event:
[Code]....
My purpose is to modified some data only for current page in a gridview. I call this function in page load and GridView_PageIndexChanged events. When it's called in page load event, it works fine. But when it's called in PageIndexChanged event, only the rows on the first page in GridView are looped through. For example, if I click page 5, the rowStartIndex becomes 100 = 5 x 20 (my pagesize). The if condition becomes itemsRead >= 100 andAlso itemsRead < 120. But after itemsRead is increased to 19, the For each gridViewRow loop stops and the if condition is never satisfied.
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