Gridview with controls (Some rows' buttons does not fire) - c#

I am building a project using ASP.NET and c#
I use gridview to display data, and on each row i have buttons to edit and delete a row.. (gridview is populated from database)
I noticed that some rows' buttons fire events. and most rows at the bottom do not fire the button click event.
What's the common reason for this?

Related

How to add new editable row on the first row of a Populated GridView OnClick

I am currently working on a website using ASP.Net and C# on Visual Studio 2012.
I have a GridView that displays data on Page_Load from my database and a button that should add new row AT THE FIRST ROW of my GridView .
Is there a way on doing this? I tried adding rows with textboxes dynamically but I can't retrieve the input data from it because it disappears on PostBacks.
Ideas so far:
Start populating the gridview from 2nd row to make the first row
clear and add control to it from the client side but I dont know how
to do it and if it is even possible.
Place the textboxes on the HeaderRow, then hide HeaderRow on Page_Load, then display the HeaderRow on button click. But the labels of the column will disappear because it will be replaced with TextBoxes.

textindex change firing multiple time with 2 gridview in update panel asp.net c#

I have two gridview in one update panel one gridview1 working with selected index change and another gridview2 for entry details based gridview1 selection. gridview2 having dropdown and textbox it works both on mouse pointer and tab saving to db through textindexchanged event if end user press tab it works fine else if after typing in textbox they directly cilck to griview then textindex change firing twice in asp.net c# web application

How to remove the clickevent of the Gridview in c# asp.net

I have a gridview with OnRowDataBound method to manually create dynamic divs in the cells within a column. I use .Attribute.Add("onmouseover","DisplayData( .... )") to add mouseover events on the cells.
At run time when one of the cells is mouseovered it invokes an AJAX function to retrieve data, which in turn populates the div inside the cell. That data contains hypelinks. The problem is, those hyperlinks are not clickable because they are overridden by the click event of the Gridview.
How can I remove the clickevent of the Gridview so it would not interfere with my AJAX-built hyperlinks within the divs that are inside the Gridview?

asp.net gridview editing

I have a gridview (Edit and Delete enabled) that shows a table. A Text Box and A Button. When I type something in the textbox and click the button, the button runs the datasource.filterexpression and filters out the rows.
The question whenever I click on the edit button after the filter has been applied The grid auto resets back to the original table? How can I solve this?

After saving the edited record in the GridView RowUpdating event, re-apply the filter and call DataBind()

edit datagrid row

i want to know how to edit a single row (which i select) from a data grid
for example i have a datagrid with columns A, B and C
and i have a couple rows of data, approx 10 rows.
lets say i want to change the value of data within row 4.
how would i do this?
i am using visual studio 2003, but i guess if visual studio 2005 would be okay too. for the coding I'm using c#
thanks..

All grid-like components of asp.net have the same machanism as it comes to starting to edit a single row. Actually it's default for asp.net only to edit a single row in a grid.
Needed to start editing is to include asp:button or asp:linkbutton in the ItemTemplate with the CommandName set to "Edit". This one of reserved commandnames all grid-like components knows how to respond to. Clicking this button in DataGrid will raise the EditCommand Event. In this event you have to set the EditItemIndex of the grid equal to Item.Itemindex of the eventargs. This will render the row vaccordeing to the EditItemTemplate.
In this template you put 2 buttons or linkbuttons. One should have the CommandName set to "Update" and one should have the CommandName set to "Cancel".
The "Update" button raises the UpdateCommand event. In which you execute code that store the data in the row to its storage (eg.: database) and sets the EditItemIndex to -1 --> all rows are rendered read-only(ItemTemplate or AlternateItemTemplate).
The "Cancel" button raises the CancelCommand event. In the event handler you have to do si set the EditItemIndex to -1.
This description is only true for DataGrid en not for the in asp.net introduced GridView which handles most of this "Boilerplate"code it self working together with the datasource controls. Google the web for more info on this. it's to much to explain here right now.
Hope it helps?

Take a look at the documentation for adding an EditItemTemplate to your datagrid. You use the ItemTemplate for view-only, display elements and you use the EditItemTemplate for controls used to bind against a single row that you select.
Here's a link that might help:
http://www.gridviewguy.com/

Is your data in a DataTable before making it a DataGrid, or can you put it in a DataTable? You can update/delete/edit rows in a DataTable, here's a link with code snippets, pretty straight forward:
http://msdn.microsoft.com/en-us/library/tat996zc(VS.80).aspx

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