I am using GridView data bound control and trying to insert a record from the footer template, below is snapshot of my code:
The insert command doesn't seem to be working as expected. Insert button click does not do anything. However, if I have a delete button with CommandName="Delete" (with same markup), it works fine.
Does GridView not understand the "Insert" CommandName? Am I missing anything?
Thanks!
GridView in ASP.NET does not support insert operations. Lots of people have added a footer row and a button to that row to do the insert. example: http://geekswithblogs.net/casualjim/archive/2005/08/29/51360.aspx
My personal preference is to have a detailsview linked to the gridview and do inserts through the detailsview. It's not pretty but it works. the footer row solution is much nicer.
Related
I have a gridview included "Edit CommandFields Update and Cancel" at the last column of my gridview. Also, I have a search button above my Gridview and everything works properly together. When I am searching for a particular Column the "sqlDataSource" of my Gridview is changing respectively on the query and displays the results.
However, the Edit/Update/Cancel command field buttons refresh the whole Gridview and I am loosing the selected editable row derived from the search results.
How can I prevent grdiview Databing when I click the Edit Command Field ?
Any advice would be appreciated,
You are probably missing the famous is Page.IsPostback check.In vb.net you will have to do some thing like this
If Not Page.IsPostBack
->your binding code goes here
End if
C#
if (!Page.IsPostBack)
{
->your binding code goes here
}
This way your results are not lost when the page reloads.
I have an update panel that includes a dropdownlist control and a detailsview control. The dropdownlist is populated by a sqldatasource control which grabs the data from a table called Places (just a list of venues). The detailsview is insert mode only and inserts places into the database table that populates the dropdownlist. I am trying to allow someone to insert a new place inside the update panel and have the dropdownlist refreshed at the same time so the user will see all places in the dropdownlist, including the one they just added with the details view. Right now, the detailsview is adding the place to the database properly but not updating the dropdownlist. If I refresh the page after adding a new place, the droplist updates with the new place. Any suggestions?
Disclaimer: This answer was posted before any code was posted in the question.
This also assumes both controls are inside the update panel.
In the event handler for Updating or Inserting for your DetailsView control, you need to add the following code:
MyDropDownList.DataBind()
And, worst case scenario, you can do this if the update panel is causing you problems. It's not the greatest performance-wise though.
Response.Redirect(Request.RawURL)
I want to do something really simple, I just can't seem to find the EnableClientAddRow property, so I can set it to true. I have a standard GridView control on a web form. I want a button to appear on the web form. When the user clicks the button, an empty row is added to the GridView UI, so the user can enter data in the appropriate fields. The row will of course, have a "Save" button of some type in one of the columns.
I know this functionality must be in the GridView somewhere, I just can't find it. I did find some odd hacks that try to manually implement this. I'm not really interested in footer manipulations or binding tricks, just the standard add row method.
EDIT:
It appears the GridView does not support adding a row as a first-order operation. This appears to be a serious design flaw.
I typically add a new record to the underlying data source as a part of the "add record" button click action. I then re-bind the view in order to show the blank row.
The new record is typically a DataRow if the GridView is bound to a DataTable, or an object if the GridView is bound to a collection of a particular type. Not sure if that is what you consider a binding trick from your question, but it works well and is quite easy to implement.
Edit - more detail to describe the process:
Add the row to the data source, set the EditItemIndex to the newly added row in order for the row to enter edit mode, then bind the data source to the GridView. Your EditItemTemplate would contain a Cancel and a Save button. Cancel would re-bind the GridView to the underlying data source without the empty row and set EditItemIndex to -1, thereby removing the row from the GridView.
How to easily insert row in GridView with SqlDataSource
If you add a new row to the datasource, even if the row has empty values, and you databind the datasource to the Gridview, it should show up as an editable row just like any of the other rows.
I have a two text boxes named region id and region name..and a button control
I enter some values into those text boxes and click the button to insert those values into the "gridview"and a "data table" associated with the gridview.
The gridview has the "enable editing" set to true..but when i click the "edit" button of a particular row in a gridview i get no response...i.e i do not get editable textboxes as it happens normally...
What is the solution for this?
You need to set the EditIndex of the row you are editting on the gdvMyGridView_RowEditing event:
gdvMyGridView.EditIndex = e.NewEditIndex
This will display your EditItemTemplate for the relevant row.
GridView Examples for ASP.NET 2.0: Editing the Underlying Data in a GridView
Editable GridView in ASP.NET 2.0
Edit control does not work out of blue. You have to write a backend SQL query for it to implement. The query will most likely look like this.
update regions SET name=#name where ID=#ID
where name and ID are fields of the table. Make sure the ID is the primary key, otherwise update will not work and you won't get any error.
I have created a GridView whose columns are dynamically created based on my data source. I have implemented these columns by using the approach described here.Those columns display properly on the initial load. However, I need to implement commanding so that a user can edit / delete a row in the GridView.
At this point, I have implemented commanding as I would with a normal GridView. I have a TemplateField with an ItemTemplate that has LinkButton elements for edit and delete. The CommandName for each LinkButton is set to either Edit or Delete respectively.
Oddly, when a user clicks either the Edit or Delete link, the data in the GridView disappears. However, I have verified that I am in fact re-binding the data when one of these LinkButton elements is selected.
Can anyone provide some suggestions as to what the cause could be?
Thank you!
Here are good examples. You can figure out postback issue.
http://quickstarts.asp.net/QuickStartV20/aspnet/