Forms Data Controls :: Gridview Dynamic LinkButton Control With CommandName ?
Jun 13, 2010
the structure is like this:
Grivdivew
ItemTemplate
PlaceHolder
/ItemTemplate
/Gridview
And then I try to add some dynamic controls into the placehold control from code behind, I use the RowDataBound Event
Private Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
Dim ph As PlaceHolder = CType(e.Row.Cells(1).FindControl("PlaceHolder"), PlaceHolder)[code]....
The problem is the button CommandName is not functioning. And more strangely, if I add the button manually into the placeholder, like this:
Grivdivew
ItemTemplate
PlaceHolder[code]....
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Dec 12, 2011
I want to access linkbutton at rowcommand event which is in footer and without commandname.
Actually i have a linkbutton in empty data templates footer template. At the rowcommand name of this linkbutton i want to access other linkbutton to change its commandname.
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Oct 28, 2010
So I have a GridView control with autogenerated column set to true, it also has autogenerated Edit and Delete buttons, sorting and paging, and also I am binding this same gridview to multiple data sources at runtime. All is working well.
Now I am adding a dynamically generated footer row at runtime. This footer row will allow users to add new record regardless which data source it binds to. So it is working as well except there's a small bug I couldn't figure out why. It's when I navigate to the last page of the gridview, if the rows on the last page is less than the page size, for example, I have page size 10 and the rows in last page is 9, then when I click the 'Add' linkbutton, the Add event does not fire, instead, it fill the last page with additional blank rows, that means if the last page has 5 rows, it will fill 5 blank rows below, if it has 9 rows, it will fill 1 blank row below. Then if you click the add again, it will work. If the last page already has 10 rows then, it works just fine.
Below is the code I used to dynamically add footer row:
[Code]....
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Oct 6, 2010
I have a series of link buttons in a repeater that switch pages
<asp:Repeater ID="rptPageLinks" runat="server"><ItemTemplate>
<asp:LinkButton ID="lnkNewPage" runat="server" Text='<%# Eval("Page") %>'
OnCommand="SomeEventHandler" CommandArgument='<%# Eval("Page") %>' CommandName="Redirect"
OnClientClick="return confirm('Do you want to save your chanes before you navigate to a new page?');" />
</ItemTemplate></asp:Repeater>
What I want to be able to do is pass the result from the OnClientClick into the EventHandler, ideally by changing the CommandName (i.e. if they click 'yes' on the confirmation it changes the CommandName to "SaveAndRedirect", if they click 'no' it stays as 'Redirect').
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Oct 20, 2010
I have a GridView with a couple of buttons (asp:Button) in it (last row). Both of them have a CommandName attribute on them and this is handled server side in a grid_RowCommand event handler. Now, this works fine. However, I need to add client side code (Javascript/jQuery) to disable the two buttons when someone clicks on or the other. This is to prevent the user from double-clicking and creating potential havoc.
The way I have done this is by adding OnClientClick on both buttons which calls a javascript function that uses jQuery to disable the two buttons. This works fine, it's just that the page doesn't post back and so the RowCommand event handler never fires.
[code]....
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Dec 21, 2010
I am working on an ASP.NET web application using .net 4.0 and VS2010.
I have a GridView and I am appending a row at the bottom to allow users to input data for "Adding" a new record.
The ONLY way I have found for this to work is to do this in the RowDataBound event of the grid. I can check to see if it is about to process the footer row then I know I am at the bottom and can insert this new row.
The row I am inserting contains a couple of TextBoxes and a LinkButton for the "Add" link.
If I just drop a LinkButton on my form and hook up the click event and I click the link button then the first thing that fires is the Page_Load event then my click event. However what is happening when I click the link button that was dynamically added to the GridView is the Page_Load event fires but the click event never does.
I have read 1000 threads saying to try to create the controls in the preinit() or some other event. In my case I can't. Or else someone would have to explain how to add the row to the bottom of the databound GridView.
Here is my code: (I removed creating the Textboxes because that is not part of the problem.
[Code]....
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Dec 16, 2010
I have a gridview where I in codebehind add a templatefield
[Code]....
In my update command when i try to find the "Result" textbox I get a null object
[Code]....
In the gridview there is another templatefield "Name" that consist of two boundfields("Firstname" and "Lastname") This column is added in the design phase and not in the codebehind.I don't have any trouble finding these controls using the ID added in the markup
[Code]....My issue is with the result column that I add in codebehind.
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Mar 31, 2010
I have a gridview and basically at page load I want it to display with an empty row. The first field in the gridview would be a template field containing a textbox. I wan't to be able to type in, for example, a product code ('abc'). This would be the parameter for the stored procedure and then the rest of the columns (40+ additional columns) in the gridview would populate with the rest of the data pertaining to that product code (i.e. price, unit of measure, etc.). In short the template field texbox is the control to bind the gridview.
After the row is populated I could click a button or link that would add that entire row to my gridview and then add another empty row where I could enter another product code... populate the row then add that row to the gridview. and so on...
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Jan 7, 2010
I am in need of some assistance in regards to how to best set the values of properties for a Web User Control which is being included into a cell of a GridView with dynamically created columns. I have tried a few different approaches, but can't seem to get a satisfactory result. Also, to be completely honest, I am not really sure if I am using best practices for what I am trying to accomplish.
First off a little background:I have a GridView for which we will never know the exact number of columns at run time. The columns are predicated by user selection. I am creating the command text for the DataSet on the fly and then looping through the columns of the resulting DataTable in order to use custom TemplateFields. This works ok for just printing out the row values but not so much for when I need to insert the Web User Control into a cell.The Web User Control is in essence a collection of image links which are used as a "Quick Nav" tool. I need to pass the values of 2 fields from each DataRow to the control via properties (for example, CustID and ProductID). I am using custom TemplateField classes inheriting from ITemplate for displaying my fields and extending the DataBinding event like so: [Code]....
This won't work for my User Control as DataBinding is called after the control is loaded into the page and I need the properties to be set before the Page_Load event of the control is fired.Is there a GridView event I should be looking into instead such as RowCreated or RowDataBound? Or should I modify how I loop through the DataTable by doing rows first, then the resulting columns as I've seen done elsewhere?
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Jan 25, 2011
I'm having difficulty trying to create and persist controls inside of a gridview during postbacks. I have an unbound Datagrid control which is created with x number of rows and y number of columns during the Page_Load event.
[Code]....
During the RowDataBound event of the GridView, I create a placeholder control and then I create a label and add the label to the placeholder
[Code]....
On the first page load when navigating to the page, the grid dispays perfectly and the labels are created with no issues and I can see the "1" in every single cell of the Gridview. I basically need the labels in the cells to store an ID when the cell is clicked (the click event works with no issues, wired it all up with javascript) and Since the Cells to not exist prior to "Building the matrix" method, How can I persist the Label controls inside of the tablecells between postbacks so I can assign and read values from them.
I've read a number of online posts from 4guys from rolla and they demonstrate how to persist a handful of controls dynamically created in a staticly defined PlaceHolder conrol outside of the complicated setup of the gridview and have failed at adapting them. The golden rule seems to be to 'recreate' the controls during Page_PreInit during the postback, but I can't seem to get it working.
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Feb 28, 2010
i have a gridview associated with a sqldatasource.the gridview contain a templateField column like this
[Code]....
however when i click on the templatefieldcolumn nothing happens (no delete)
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Sep 23, 2010
The DetailsView control has in its
Events an
ItemCommand event that uses the
DetailsViewCommandEventArgs event arg class which has a
CommandName property.
My questions are...
What are the possible values (e.g. "Select", "Insert", etc.) for this CommandName property when operating a standard, uncustomized DetailsView control?
Which order do the following fire in?
ItemCommand
ItemCreated
ItemDeleted
ItemDeleting
ItemInserted
ItemInserting
ItemUpdated
ItemUpdating
The "ing" events are currently being intercepted so that if the user doesn't have permission I set the e.Cancel = true and the "ed" events have redirects to send the user back to a list page that shows the items they just added/updated/deleted. However, I am not able to capture the Cancel button on the DetailsView control since there's no event for it. What I want is to redirect the user back to the list page if they click on Cancel as well.
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Oct 9, 2010
If there's a better way to accomplish what I'm attempting I haven't found it yet. That being said, I have create a gridview like the one here,[URL]And with some minor tweaking it working great for all my fields, checkboxes, etc. The issue is my last column is another gridview, and I'd like it to function the same. that is, a dynamic gridview inside of a dynamic gridview. I get that I have to create it initially with null values or it won't show up. I guess what I'm having trouble figuring out is instead of go will null data in the parent gridviews column, do I place my blank child gridview. Do I create and bind the child gridview first, or second. Generally just not sure. Also, as far as storing the data from the child gridview goes, will each one need it's own datatable?
[Code]....
[Code]....
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Nov 16, 2010
I'm customizing a NopCommerce store, and am using a gridview to display and sort the products. All that works well. I like how the external pager (user control) works with the gridview, with one exception -- it uses the hyperlink control, so I lost viewstate, which I need to retain for both the search page and to retain the gridview sort options. Based on the page selected (from the pager control), I query the database and rebind the gridview. So, I switched the user control to use LinkButtons instead of Hyperlinks. This is the sample code for one of the buttons:
[Code]....
I set a breakpoint inside the lbCommandClick method, but it never gets hit. Reading other posts tells me that I would have to add the dynamic controls in the OnLoad method, but since this all happens based on other data on the page (say search results), I don't think I can do it onLoad. However, the link buttons do work to cause a postback, and my viewstate is saved correctly. The only problem is that I do not know which button was clicked. I could check Request.Params["__EVENTTARGET"] onLoad, but that is kind of a hack -- I'd much rather be able to set the event handler in the user control and use the CommandArgument property. But, what I have tried so far fails.
Especially one that would allow me to set the EventHandler in the User Control? (e.g. OnlbCommand="PagerLBPageChange" )
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Aug 18, 2015
i have added a hyperlink in the gridview and i am displaying the image names in the grid as hyperlinks
when i click on the hyperlink in the grid, the related image has to be displayed in the same page but in another div which is next to gridview
but for me ,image is displaying in another page
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Nov 28, 2012
i have read and used this script.Adding Dynamic Rows in ASP.Net GridView Control with TextBoxes..it is very usful to me but i want to fetch data from sqll database and fill the newest row with it. the past row data hav to be remain same. becoz of the same name of textbox it happens. whenever i try to fetch data from database and fill textbox all rows get updated with the same data.
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Sep 11, 2013
I want to add inputs from textboxes, ddl to datagridview without saving it to database by clicking on add button as many rows i want and later save it to database when clicked on save button....
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Apr 27, 2016
I want to bind data from database to Dynamic Grid-view Control with textbox and dropdown using dataset.
I have successfully inserted data to database using this code but now i want to fetch inserted data to same grud view control. i have tried following code. but not getting ans.
SetInitialRow();
string ID = 101;
foreach (GridViewRow row in Gridview2.Rows) {
string str1 = "Select * from VendorInvoiceDetails where Invoice_ID='" + ID + "'";
DataSet ds1 = GEN.GetDataByQuery(str1);
[Code] ....
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Aug 18, 2010
easiest way to raise an event from a LinkButton in a GridView, and then get the ID of the Row from where the button was clicked?
I have a BoundColumn in the same GridView which contains the ID if it.
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Mar 1, 2010
I am trying to add a LinkButton in a GridView that when clicked activates the the AJAX ModalPopupExtender to allow the User to Confirm if they want to Delete a Row.f they click Yes the Delete method should then take place. Unfortunately when I use a LinkButton when Yes is clicked to Confirm the deletion of a Row the LinkButtons click event is not fired.
[Code]....
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Nov 9, 2010
I am trying to find my linkbutton control using RowDataBound using the below code
[Code]....
[Code]....
but it always comes back with null the lnkButton.
What is the issue here?
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Feb 22, 2010
I need you assistance, Dynamic Delete LinkButton with CommandName=Delete gives me an error: Delete can only be called on a valid data item. nfact I am designing a Complex Grid using .Net 3.5 ListView Control with Scrollbar and Fixed Toolbar: This grid consist of 3 Tables:
1- footer
2- Toolbar Control
3- Scrolling Data Grid with Header
ListView give us only one ItemPlaceHolder to Bind Data as per LayoutTemplate, so I cannot able to manupulate my Toolbar Controls with ItemTemplate :(, therefore I decide to use ItemDataBound to add ImageButtons Dynamically using Init Page Event and I am able to get the result as you saw above:
ImageButton with funnel icon is with CommandName="Filter"
ImageButton with magnifier icon is with CommandName="View"
ImageButton with stop icon is with CommandName="Delete"
Now I can able to handle Filter and View with OnItemCommand Event but when I click Delete button I am getting an error as shown below: The grid used CSS I am sending you the HTML and code behind to resolved this problem: HTML CODE:
[Code]....
CODE BEHIND VB.NET
[Code]....
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Feb 23, 2010
How do I add a LinkButton to a GridView pager? The only way I can think of implementing this is to dynamically add the numeric pages in the code behind and add the LinkButton I require in the PagerTemplate. owever in the example illustrated when a user clicks a numeric Page number the numbers disappear and nothing fires. My GridView is in an UpdatePanel.
[Code]....
[Code]....
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Mar 31, 2011
I have a Datagrid inside a Datagrid and I am trying to perform an action (open an pop-up window with related values in the querystring) when the inner datagrid control is clicked.In this simplified example I have 2 datagrids (datagrid1 and
datagrid2). In the second datagrid (datagrid2) I have a LinkButton (lbViewDetails) that I want to control what it does based on the value in the upper datagrid (datagrid1)'s lblRecordId value.
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Dec 9, 2010
I have a gridview in my aspx page, which is filled with data from generic list.
I want to add a checkbox and a link button in the grid, so that users can select the row and when users click on the link button, a new page is loaded with the items in the selected row.
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