I have a FormView that is binded to model.
And use such controls inside it:
<asp:TextBox runat="server" ID="txtName" Text='<%#: BindItem.Name %>'></asp:TextBox>
After i've added annotations to the object the form is binded to- validation started to work, but i can't see any validation messages. How to properly do that?
PS:
ValidationSettings.UnobtrusiveValidationMode = UnobtrusiveValidationMode.WebForms;
Have you tried the <asp:ValidationSummary> control?
Like this:
<asp:ValidationSummary ID="ValidationSummary1" runat="server"
DisplayMode="BulletList" ShowModelStateErrors="true" />
Related
I hava a asp.net that I thought is going to have multiple forms.I put a asp panel and added the form to it and validators to controls everyting works.but if I try to put another panel and a form page become invalid.the reason I do this is because any attempt to postback data will trigger all validtors.I know that I can brake each form to each page.but for my design this seems silly.
what im looking for a way to have multiple forms in one page.
or have validators work only on certain situations.
or group validators to work if the button click only happen in the same panel where validators reside.
You cannot place more than one form tag in a single ASPX page. It is a limitation of ASP.Net Web Form.
However, you can fake it with ValidationGroup. For example -
<%-- Group One --%>
<asp:TextBox ID="TextBox1" runat="server"
ValidationGroup="One" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1"
runat="server"
Display="Dynamic"
ValidationGroup="One"
ControlToValidate="TextBox1"
Text="Textbox one is required." />
<asp:Button runat="server" ID="Button1"
OnClick="Button1_Click"
Text="Submit"
ValidationGroup="One" />
<hr/>
<%-- Group Two --%>
<asp:TextBox ID="TextBox2" runat="server"
ValidationGroup="Two" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2"
runat="server"
Display="Dynamic"
ValidationGroup="Two"
ControlToValidate="TextBox2"
Text="Textbox two is required.." />
<asp:Button runat="server" ID="Button2"
OnClick="Button2_Click"
Text="Submit"
ValidationGroup="Two" />
Note: If you want multiple form tags in a single page, you might want to look at ASP.Net MVC.
I notice the calendar control in ASP.NET does not have an AutoPostBack property. I want that when I select a date from the control, the control must not post back the page. How do I do that?and one thing more when i hover over on the calender it shows me a script. "javascript:__doPostBack('Calendar2','5098')". So my question is how to disable this javascript to don't postback the values
There is no way to turn off the postbacks to the server but you can use updatepanel control which can help you some what.
According to PLBlum at the ASP.NET forums:
The Calendar control included with ASP.NET uses postbacks only. If you
added Microsoft ASP.NET AJAX to the page and put the calendar into an
UpdatePanel, it can reduce the appearance of postbacks by using
callbacks. But it still makes a trip to the server for each click on a
date or month.
Many people have created replacements to the Calendar control that
uses javascript to do the work. I am the author of one, in "Peter's
Date Package". You can locate others in these sites: the Control
Gallery (here under Resources), www.123aspx.com, and www.411asp.net.
You can add like following
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Calendar ID="ad_Cal" runat="server" OnSelectionChanged="ad_Cal_SelectionChanged" ></asp:Calendar>
<asp:Button ID="btn_Del_Day" runat ="server" Text ="Remove Day" OnClick="btn_Del_Day_Click" UseSubmitBehavior="False" BackColor="#4AA3DF" Font-Bold="True" ForeColor="White" />
<asp:Button ID="btn_sort_Date" runat="server" Text="Sort Days" UseSubmitBehavior="False" BackColor="#4AA3DF" Font-Bold="True" ForeColor="White" OnClick="btn_sort_Date_Click" />
<asp:ListBox ID="lst_ad_dates" runat="server"></asp:ListBox>
</ContentTemplate>
</asp:UpdatePanel>
notice that you should use UseSubmitBehavior="False" with buttons also to stop postback for buttons in the same updatePanel
It works fine
I think you can use "CalendarExtender" from AjaxToolkit
<asp:TextBox ID="txtCalendarExtender" runat="server"></asp:TextBox>
<cc3:CalendarExtender ID="Calendar1" PopupButtonID="imgPopup" runat="server" TargetControlID="txtCalendarExtender" Format="dd/MM/yyyy">
</cc3:CalendarExtender>
Remember to add this code at the top of your page:
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc3" %>
Apologies in advance, for what may be a newbie question. (new to asp.net, coding in VB, zero knowledge of best controls). Please respect that I am not interested in AJAX controls, or using MVC and trying to minimise javascript. What I need to do is very simple in terms of technology.
I am developing a form that allows users to Edit database data. I have chosen to use FormView so that I can format it like a legacy vba app. I am able to set the data source to my database table and the values from the database successfully show up if I allow VWD to automatically format the control. I can edit everything in the database using this form as well.
However, the boss hates having to type dates.
I haven't been able to find a datepicker control with a datasource feature that works like the text boxes that are automatically built in formview (with a bind to a datasource feature). So, I am assuming none exist. I need some assurances that what I think I need to do is the right way.
Instead of using the FormView control's datasource via the front-end automagical stuff, I should instead
place one of these datapicker controls that simply combine calendar with a text box for all date fields in the formview (no disrespect to those who built them, just can't believe they are not more feature-rich, this seems so needed giving the number of datepickers available)
declare my data source in Page_Load and load all the controls if they have existing data utilising FindControl
use Data_Bound block to retrieve the selected values from each control utilising FindControl and build a dynamic SQL string for Update
declare and update my database using one of the code behind blocks, perhaps in the DataBound
Am I on the right track? I have no experience to be confident in my assumption.
and please, if there is an easier way, I'll take it, but I have to make it "pretty".
And suggestions for controls of any sort are welcomed.
---Further into my issue
Here is some code to prove I've actually tried to resolve this...
In my FormView code block I have:
<asp:FormView ID="FormView1" runat="server" DataKeyNames="MASTERID_Action"
DataSourceID="srcAction">
<EditItemTemplate>
MASTERID_Action:
<asp:Label ID="MASTERID_ActionLabel1" runat="server"
Text='<%# Eval("MASTERID_Action") %>' />
<br />
Action_Description:
<asp:TextBox ID="Action_DescriptionTextBox" runat="server"
Text='<%# Bind("Action_Description") %>' />
<br />
Action_Target:
<asp:TextBox ID="Action_TargetTextBox" runat="server"
Text='<%# Bind("Action_Target") %>' />
<br />
Action_Captured:
<asp:TextBox ID="Action_CapturedTextBox" runat="server"
Text='<%# Bind("Action_Captured") %>' />
<br />
Action_Declined:
<asp:TextBox ID="Action_DeclinedTextBox" runat="server"
Text='<%# Bind("Action_Declined") %>' />
<br />
Action_AgreedDate:
<ewc:CalendarPopup ID="CalendarPopup1" runat="server" Culture="en-AU"
PostedDate="" SelectedDate='<%# Bind("Action_AgreedDate") %>'
SelectedValue="01/14/2013 08:47:54" UpperBoundDate="12/31/9999 23:59:59"
VisibleDate="01/14/2013 08:47:54" />
<br />
...
</EditItemTemplate>
My database holds this Action_AgreedDate as nullable.
When I view the ItemTemplate (in the browser) the date shows up as 0.000 (because its a text field and bound to Action_AgreedDate, no error occurs) and when I click Edit to go to the EditItemTemplate I get this error:
Conversion from type 'DBNull' to type 'Date' is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidCastException: Conversion from type 'DBNull' to type 'Date' is not valid.
Source Error:
Line 95:
Line 96: Action_AgreedDate:
Line 97: '
Line 99: SelectedValue="01/14/2013 08:47:54" UpperBoundDate="12/31/9999 23:59:59"
I can easily translate this into "the control found a null field and doesn't know what to do with it"; problem is, I don't know what to do. I have checked the properties of the field (the CalendarPOP field to see if there is a setting for handling nulls and nothing is obvious to me. I'm currently trying to find further documentation on the control online. (I've contacted eWorld and hope they will be able to respond.)
I should also add that if I request a record that already has an Action_AgreedDate I get no errors because there is a value present in the database for the control to display.
I think the best way for you to do this would be to use jQuery and jQuery UI, which has a date picker, which can be attached to a regular ASP.NET TextBox in your FormView. So if you had FormView code that looks something like this for example:
<asp:FormView ID="FormView1" runat="server" DataKeyNames="id" DataSourceID="SqlDataSource1">
<EditItemTemplate>
id:
<asp:Label ID="idLabel1" runat="server" Text='<%# Eval("solution_id") %>' />
<br />
date_modified:
<asp:TextBox ID="date_modifiedTextBox" runat="server" Text='<%# Bind("date_modified") %>' />
<asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True" CommandName="Update" Text="Update" />
<asp:LinkButton ID="UpdateCancelButton" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" />
</EditItemTemplate>
<ItemTemplate>
id:
<asp:Label ID="idLabel" runat="server" Text='<%# Eval("solution_id") %>' />
<br />
date_modified:
<asp:Label ID="date_modifiedLabel" runat="server" Text='<%# Bind("date_modified") %>' />
</ItemTemplate>
</asp:FormView>
You could run something like this using jQuery UI to get a datepicker on the date_modified text box:
$('[id$=date_modifiedTextBox]').datepicker()
The $('[id$=date_modifiedTextBox]') part is necessary to select the ASP.NET control using jQuery, if it were just a normal element you could just use $('.className') or $('#id') or something like that. Hope this helps.
Problem solved.
I ran across an article on 4GuysFromRolla.com about the RJS POP Calendar (http://preview.tinyurl.com/cerm9xv) and it ticked all the boxes. Successfully implemented it and, because the calendar is separate from the specified text box, it doesn't have to be bound ! It works very nicely. The 4GuysFromRolla save my bacon yet again...
Hi I was wondering if there is any way to bind my server side panel which contains multiple textboxes ,so my textboxes show associated bound fields which coming from data base automatically .
something like this:
in code behind:
myPnl.DataSource=myContext.TableName;
in aspx page:
<asp:Panel runat="server" ID="myPnl">
<asp:TextBox runat="server" Text='<%# Bind("Title") %>' ID="txtTitle" ReadOnly="true">
Given the following InsertItemTemplate (simplified) I'm not getting anything back in the event object's Values collection.
<InsertItemTemplate>
Item:
<asp:DropDownList ID="ItemInsertType"
DataTextField="SearchItemName"
DataValueField="SearchItemID" runat="server" />
Hide Location:
<asp:TextBox ID="txtItemHideLocation" Text='<%# Bind("HideLocation") %>' runat="server"></asp:TextBox>
<asp:Button ID="btnSearchSearchItemInsert" CommandName="Insert" runat="server" Text="Add" />
<asp:Button ID="btnSearchSearchItemInsertCancel" CommandName="Cancel" runat="server" Text="Cancel" />
</InsertItemTemplate>
I'm binding the listview to a collection attached to my nHibernate model object (SearchObject.SearchItems). This collection doesn't have insert or update handling like an object datasource would, so I want to handle the insert/update events manually. Is there a way to get these values to come through automatically, or do I have to manually grab each value from its control when I handle this event?
I was using reflector on that assembly, and it looks to me (could be wrong) that it only supports IBindableControl controls for automatic extraction into the Values collection. So Values would not contain an entry for any non-IBindableControl-supporting controls. TextBox does not implement this, nor does DropDownList.
I typically use the InsertItem property and extract the control references directly using FindControl.
HTH.