Forms Data Controls :: Checkbox - The Value Is Not Saved/changed?
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" />
<asp:CheckBoxField DataField="displayFrontPage" HeaderText="Display on Front Page?" />
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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Similar Messages:
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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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.
Unfortunately, the SelectedIndex property of the CheckboxList is useless. I'm sniffing around checking the ViewState, but I'm not sure if that'll work or how I go about that.
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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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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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Dec 2, 2010
i have repeater
[Code]....
and have code behind
[Code]....
when i click chk_packages checkbox myCheckedChanged fired and i want single checkbox to get enable
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Mar 4, 2010
I am displaying my table data using listview control. It is working fine.
Now I would like to add a checkbox in front of every item so then when user checks the checkbox and click on delete button inside or outside the listview control then i want all the records to be deleted.
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Feb 13, 2011
I got a table in a formview where i placed lots of textboxes and dropdownlists inside the table because I need these textboxes and dropdownlists on a background image.
the data on textboxes and dropdownlists that are inside the table is unable to be saved into the database when i pressed the "submit" button. Other textboxes and dropdownlists that are not inside the table work fine. Here are the HTML code for the table:
<asp:Table ID="Table1" runat="server" BackImageUrl="~/images/DRAWING.jpg">
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Mar 24, 2010
I am using a bound gridview in ASP.NET 2.0. The gridview has the ability to edit/update and insert rows. One of the columns holds a number which represents a percentage. What I cannot figure out is how to ensure that all the rows in the gridview total 100% before being able to send the updates or newly inserted data to the database.
For example say there are 5 rows in the gridview, each row has 20% stored in the column so it adds up to 100% which is fine, the data is updated/inserted in the database. But say each row only had 15% totalling 75%, the user should not be able to send the updated/inserted data to the database until either they add a new row with a percentage of 25 or they edit the other rows for a cumulative total of 100%
I am not familiar with javascript or AJAX
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Dec 2, 2010
i'm trying to show data in gridview through this code but everything appears except the images. I saved the image in sqlserver2005 as Image datatype and when i try to bind the gridview to the db by wizard the images appear when i press test query but nothing when running the app
In Class Named Admin: public DataTable Select_writer(string writer_name)
[Code]....
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Feb 18, 2010
i am having two textboxes and a label in a gridview control, i am adding a javascript function to the second textbox onblur event attribute and display the result in the label, the function works fine and result is displayed in the label, but when i am saving the grid data into the database, the label is returned 0 or empty, but i am able to see the value , how to overcome this.
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Apr 13, 2010
I have a DataGrid that has a dropdown list in an ItemTemplate. Basically, users select a value from the dropdown for each row of the datagrid. When the page is posted back, the selected index of the dropdown list is always reset to 0, and the items are re-bound.
Does anyone know why this might happend? The dropdown items are hardcoded, so there is no external data binding that happens on post back.
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Oct 21, 2010
I able to successfully see all the Excel files in the given folder using the datagrid and code below. Now I would like to be able to click the link to the file, or add a button, to get a download file dialog box.
[Code]....
CodeBehind:
[Code]....
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Oct 25, 2010
I have a coloumn in a database table in which i am storing the candidates photo in a binary format.
now i have to show these photo in a gridview according to the candidates rollno. i am trying to use the imagefield of a gridview control to display the photo but it is not displaying the photo in a grid view
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Dec 1, 2010
I have a gridview with hyperlink button in every row. Gridview is bind with some datasource.
Just what i want to do that when user click on hyperlink on particular row hyperlink button it should download a file.
The files are going to be saved daily in a share folder.
Secondly, I don't want to give user an option to open that file, means when user clicks hyperlink a dialog box should appear with open button.
how to find particular file as per date from share folder and download.
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Aug 12, 2013
I have 5 checkbox columns in my grid .. like
Id Chk1 Chk2 Chk3 Chk4 Chk5
I want select only one checkbox among 5 checkboxes if user selects one checkbox another which are checked are need to uncheck. How can i do this in client side .....
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May 3, 2010
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:
[Code]....
[Code]....
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Mar 11, 2011
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkRDR1" runat="server"/>
</ItemTemplate>
</asp:TemplateField>
=========================================================================================
Dim checkbox As CheckBox = CType(row.FindControl("chkRDR1"), CheckBox)
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Nov 13, 2010
On a page load, how do I check to see if data in a table has changed? And if any data has changed, populate Gridview1?
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Jul 2, 2010
I have a few textboxes,dropdowns and one checkbox in a DataGrid. when the checkbox is checked/unchecked i need to save the record.How to raise a event when a checkbox is checked/unchecked in a grid.How to Identify the row which is checked.
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Jun 15, 2010
I am creating a WebApp and got stuck on the "Save" process. I am gathering data from a SQL DB and using a DataReader to populate the DataList. The DataList hold employee data and there are quite a few. What is the best way to save the data to the database?
I had originally thought that once a Supervisor has verified the employee data, just click the "Update" button and save to the DB but how would I determine which fields in the DataList have been changed? I only want the changes saved.
use a Dataset to populate the DataList then build a second Dataset with the same structure and compare the two. Then save the changes to the DB. I had read before on the 4GuysFromRolla website that using Datasets in a web app wasn't the greatest ...
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Sep 23, 2010
does anyone know if the gridview can tell you if a cell's contents have changed (during an edit) in order to determine if an update should be made against the database?
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Jun 26, 2010
I have a dropdownlist as a template item in a gridview - it populates fine and with the right values. I have an SelectedIndexChanged on the dropdownlist, and has set it for postback. In the SelectedIndexChanged event, I would like to know where the control that fired this event is, - which row in the gridview is it in? How do I get this info? If the row was selected it would be easy, but the only thing that has happened in that row is that the dropdown has changed value and consequently the SelectedIndexChanged event has been fired - is that enough to know which row the event has been fired from?
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Feb 1, 2011
I have a Gridview with about 6 templated columns hooked up to SQL, with a Save button below the grid.
When save is clicked, I loop through each row, and write each row back out to SQL.
Can you recommend a good way for me to tell whether the row has changed so I can avoid re-writing the row when nothing has changed?
This is not only for performance, but I also have a request to write out a "Last Modified Date" along with each record. So for that, I would need to know whether the row has changed.
I saw someone mentioned that the Gridview.RowState could be used for this, but I don't see how.
One alternative I see is to re-read each row from the database first, to see if anything changed. Another alternative might be to set a dirty-bit on each Textchanged, SelectedItemChanged, etc, for the row, but I'm not sure where to store that.
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Jun 14, 2010
I wanted to create a dropdownlist that would trigger an asynchronous postback and update the Gridview inside the Updatepanel. However, no matter what I do, when the dropdownlist changes, nothing in the UpdatePanel will change, even the TestLabel....I've been banging my head against the walls for days on this -- why won't this work? When I remove the UpdatePanel code and triggers, all the code works, eg, you change the dropdownlist andthen gridview updates -- but it refreshes the page and this is why I wanted to put the Gridview inside an Updatepanel to make it look cleaner.[Code]....
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