Validating Controls In ListView Insert / Edit Templates?
Oct 29, 2010
I added a RequiredFieldValidator to my InsertItemTemplate, and it seems to be working fine. The problem I am having, however, is that now I cannot do anything else in the ListView (like edit or delete items) UNLESS the required field has a value. Is there some way I can manually do the validation when the user clicks the 'Insert' button on the InsertItemTemplate, or some other little trick I can perform so the user doesn't have to first type in a value just to delete something else in the list?
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Similar Messages:
Aug 9, 2010
I have a listview set up in "flow" mode where the existing records are all on an extended page so you can scroll down to any record.
The InsertItem Template is in the first position, making it easy to insert a new record.
And one can scroll down the page to any record, click the edit button and update that record -- nice having everything on one scrollable page.
I am running into a problem with validations. I have validation controls restricting inputs for all the textboxes on the Insert Item template. They work fine. And on Item Inserted I am running a page validation:
Page.Validate()
If Not Page.IsValid Then
e.Cancel = True
End If
which works fine also.
The problem occurs when I scroll down to an existing record, and go to edit it. I have all the same validation constraints on the textboxes for the EditItemTemplate as I have on the InsertItemTemplate. But I cannot successfully do a page validation on updating the record. The code I am using on update is:
Protected Sub LVRentals_ItemUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ListViewUpdateEventArgs) Handles LVRentals.ItemUpdating
Page.Validate()
If Not Page.IsValid Then
e.Cancel = True
End If
End Sub
This results in a Cancel even if there are no validation errors on the InsertItemTemplate because the Page.Validate() seems to be causing the InsertItemTemplate to think its fields should be filled out also.
Here is the code for a typical entry of the InsertItem Template:
[code]....
All the controls in the Edit Item template are part of ValidationGroup "edit1" and those of the InsertItem Template are part of ValidationGroup "edit2"
How can I get around receiving validation errors on the InsertItem Template when I am trying to validate just the EditItemTemplate when both are present on the page?
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Dec 23, 2010
I would like to change the layout of the edit and insert templates to show multiple columns (instead of the default 1), and make the required fields show in the first column. Please point me in the direction I need to go.
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Mar 26, 2010
Is there a way to create only the InsertItemTemplate in the FormView and then assign it to EditItemTemplate. Something like
Page_Load
{
FormView.EditItemTemplate = FormView.InsertItemTemplate;
}
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Feb 13, 2011
I am using a formview on main web page and the Item template displays my data correctly but I get and error when I try and link to the edit or insert templates.This happens on our remote tesing server only.On my local machine running the page on the local server in VS 2010 everything works fine.But then doesn't it always work on your local machine.I might also mention that I am compiling for asp.net 4.0.
Here is the stack trace :
System.Data.SqlClient.SqlException (0x80131904): Login failed for user 'MYCORPABIGWEB01$'. at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
[code]...
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Feb 1, 2011
i am using two tables for salary components like bonus,hra,ta,da.one is salary lookup table for viewing which components are chosen and according to this salary table is created dynamically.i want to view data fields of salary table in gridview and update thier value.
now problem is that how to create template field and edit template field for updating fields of salary table because field of the salary table changing every time as it is creating dynamically.
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Jan 5, 2010
I have a ListView Which displays Customer, product, price, Quantity and comments from database.The User can either edit it or Insert new items. In Edit Item template and Insert item template, i need to add a image button next to the textbox, which when clicked, will display a pop up window with list of customers or products.I have been doing it with the normal aspx page with textboxes. I use click handler to pop up the windows.i'm not able to do with listview Please help to give a solution to it.How else can i add an image icon and click it and get the values back to the textboxes?i will post what i'm doing without listview first and then the part of the relavant code of Listview.
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Feb 24, 2011
I'm using a listview control to do a survey stuff. Everything is working perfect to present the data questions, to be answered text with the different type of controls radiobuttonlists, checkboxlists, dropdownlists, etc. The admin can modify, create, change questions, answers, etc. on the survey.When it's select, edit, or insert it's easy to find the control inside a listview.However, I'm wondering how to post user's answers back to DB. How to find controls inside the listview to grab the entered data/responses from there using let's say the submit button that is outside of the listview.I believe there should be a way to do it as otherwise why we put radiobuttonlist on a listview that somebody could click it and then we should be able to get that entries. Or I'm too optimistic on this control?
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Sep 2, 2010
I'm finding my self with the problem that if I do not show the Template for a "complex" object I have in the main view object I still get the errors in the summary. How do i get around this?
I've got a model with say:
->Persons (has its own editor template)
->Pets(has its own editor template)
In the create view I show each one depending if they are not null. But when I try to validate HouseType and say I have Persons not null and pets is null. I get errors of validation for pets.
How do I get around this?
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May 1, 2010
I need to display the data using listView. I want the data to be displayed like this:
Student Name: John
Exam Grade
MidTerm1 A
MidTerm2 B
I want each item to looke like that. For this, I created a 'Student' class which has the Name and Exams(A list of Exam class objects) Properties. And the Exam class has ExamName and Grade properties. how I should specify the ItemTemplate and LayoutTemplate for the ListView??
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Oct 1, 2010
All the writeups on ListView's EmptyDataTemplate say that it's for displaying the fact that no data records exist, which is logical; but the bad thing is that I've found nothing as a follow-up. In other words, I haven't been able to find any "now what?" once you (as the site user) find that there aren't any data records. I am led to then ask what the real purpose of the EmptyDataTemplate is if you can't do anything with it.
I added a button called "Add Your Photo" on the EmptyDataTemplate, which activates a ModalPopupExtender with an AsyncFileUpload. All this works fine in terms of uploading the file but nothing happens after that. I wonder if I should be starting instead in the InsertItemTemplate.
So, I need to know how to accomplish a couple of options: I need to start out in either the InsertItemTemplate or the EmptyDataTemplate. If I do the latter, I will need to know how to get from there to the ItemTemplate so the rendering can be displayed.
What code should I use to display the data--that is, how do I move from the EmptyDataTemplate to the ItemTemplate?
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Feb 17, 2011
I have a Listview that is connected to an EntityDataSource. What I'm having trouble doing is showing fields of an association in the Item Template rather than just the id.
For example, what it currently shows:
Name: John Doe
Race: 3
What I wish it would show
Name: John Doe
Race: Caucasian
Some example code:
[Code]....
Obviously, I'm getting the number because Race_ID is an integer. What I'm less sure about is how to bind it or Eval it in some manner that will let me match that id to a name in the other table (which is associated). I've tried <%# Eval("Race.Name") %>' and a few other things to try to get a name rather than an ID but I always get either the id or nothing at all.
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Feb 18, 2010
This is probably a dumb question, but I have to ask because I spend so much time editing my formviews and listviews. Is there a way to edit the default template setup for these controls, in the code or somewhere? When you drag them over you get the default text with textbox column names; then I spend over 30 mins editing each to look the way I want it to.
I know I can create standard templates for WebForms and save them as Exported Templates.
And is it possible to edit the default control when you drag them on to the page, to list certain attributes automatically. example (validation controls you always have to add ControltoValidate I would like to drag mine onto the page and it say controltovalidate="" and then all I do is fill in the blank. Intellisense is fine, but sometimes you get brain freeze after hours of web design and forget the needed attribute and you have all to go through all of the errors and mistakes.
The ultimate would be, to drag a FormView Control and when you Refresh the Schema, you get textboxes, label controls instead of text for column name, and divs for forms, and Image Buttons , I am sure there is an XML file that runs the code that you can edit or something.
OR
ASP Developers, When you develop the next ServicePack allow us to edit or create default templates to customize the default templates, in VS and VWD.
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Oct 26, 2010
I'm inserting data into a SQL database through a detailsview. When a user inserts an incorrect data type or leaves a required field blank it shoots off to a big error screen. Is there a control that I can use that will allow it to give an error (with a little star or something) that says which field is incorrect without the big error screen?
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Sep 21, 2010
Before committing the record from the postback of the Create or Edit method in my controller, I validate the values in the form against some business rules in the GetRuleViloations() of this domain object. The following rule example is written in two ways. The 1st one validates against the numeric values in form, the 2nd one validates using the associated object (lookup table in database) description via the foreign key. I would like to use the 2nd method, but during the Create postback the associated object is always null.
[Code]....
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Aug 20, 2010
In my edit template I want a dropdownlist containing a list of possible customers. The list is populated from a database table containing existing customers. If the main record has customer "XYZ", then I want that customer to be the default in the dropdown. I'm using VS 2008 and C# My markup for the dropdownlist is currently:
[Code]....
The dropdownlist is populated but the problem is it shows the first customer in the list. I don't want the user to have to rechoose customer if that is not what they are changing.
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May 4, 2010
I need to display data somewhat like this:
Student Name: John
Exam Grade
MidTerm1 A
MidTerm2 B
For this, I defined a class 'Student' that has the properties StudentName[String] and Exams [a list of ExamGrade objects which has the Exam and Grade properties]. And I am using nested listviews to display the data. Here is the markup for the ListViews:
[Code]....
And the StudentInfo class looks like this:
[Code]....
And Exam class has just two properties.
Now the issue is that I have to press the Edit button [link button] twicw to get the EditItemTemplate. Even then I would get the blank textboxes. So what should I do to make the EditItemTemplate appear on the first click and the TextBoxes to appear with the existing data?
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Aug 2, 2013
I have a table which has like 450 fields, i want to add edit option to my GridView which allow user to edit the data for that row.i don't wanna write ItemTemplate field for 450 fields, is there a way to get it done automatic query using ListView or GridView whatever is good for it.
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Dec 1, 2010
I have a Listview in ASP.NET 3.5 page. When I press the Edit button it takes about 10 seconds before the screen is refreshed.
I have disabled ViewState and SessionState with no improvement to response time.
I'm looking for suggestions of what to look at to improve the response.
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Jan 16, 2011
On the items in my listview, I have a button to allow for editing. The strange thing is, that the button only changes to editmode on the second click of the button, and then it doesn't load the data from the item. I have tried to debug this issue, and it does cause a postback on the first click, but nothing happens. Then on the second click, it fires a postback again and changes to the edittemplate, but without any data.
I databind my listview on
if(!IsPostback)
lv.DataSource=.....
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Apr 29, 2010
I have a basic list view, in the edit mode I have a dropdown list, and a checkbox, I want it so that if you choose "yes" from the drop down box the check boxs becomes enabled. I know I need to find the control but I keep getting object refrence error with this code.
[Code]....
the listview renders its layout / item template fine but when I click on edit to send it to edit mode it fails to find the dropdownlist ddlQA1YNM which is a bit ironic cause its the ddlQA1YNM that is making the call to ddlQA1YNM_ondatabound. Now it could be with the fact its on the databound stage. Not sure how that plays into the stack. I call ondatabound to determine what the dropdownlist value is and set the enabled status according on the load into edit mode.
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Mar 13, 2011
I want to have a listview with conditional formatting on its edit and delete button.So, in nutshell, I want to check if the writer of post is equal to session("memberid"), then the edit and delete button will be appeared, else, it will show hidden.
[Code]....
roughly, i want and plan it to be sort of like that (as i found it at [URL]But I do not have any idea on how to make it whatsoever.So, if you guys have any idea (same as method above or different method), please show me the way.I have seen another forum, but I don't get it.
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Jan 26, 2011
in the nested ListView (or the child ListView), the edit command does not work.
It seems that the <EditItemTemplate> is not properly excecuted by the edit button in the <ItemTemplate>.
Interestingly, the edit command in the parent ListView works well.
The insert and delete commands in the nested ListView also run without any problem.
But I get no change by pushing the edit button which is located for each reply (the item of the nested listview)
Here is my code.
[code]...
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Mar 4, 2010
i am updating data using editcommand by listview.. i got data max 50 depends on customers sometimes it has a few in the database. i am using listview and sqldatasource. when i update using editcommand in listview. it doesnt update relevant rows. it update to all data in database. why.. i have provided datasoure and list view.
<asp:ListView runat="server" ID="photosListView" DataSourceID="SqlDataSource1"
DataKeyNames="PhotoAlbumID" onitemediting="photosListView_ItemEditing" >
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server"></asp:PlaceHolder>
</LayoutTemplate>
<ItemTemplate>
<div>
<div>
<div>
<asp:Image runat="server" ID="capImage"
ImageUrl="~/AsianaPortals/StudentUnion/Image/PhotoGallery/newadmin/caption.png" />
</div>
<div>
<asp:TextBox runat="server" ID="photodescriptionTextBox" Width="263px" Height="95" TextMode="MultiLine"
Text='<%# Bind("PhotoDescription") %>'/>
</div>.....................................
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Dec 5, 2010
I have a problem with using the listview.When I want to update or cancel the update, the listview doesn't leave the edit mode.When I clicked the updatebutton, the methode Listview.Itemupdating is fire and changes the database. But then nothing happened. Even if i set the itemindex -1.The Listview.Itemupdated does also not fire.This is the code.
[Code]....
The code:
[Code]....
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