Web Forms :: Dynamically Created RequiredFieldValidator Are Always Validating True?
Jan 20, 2010
I'm creating several textboxes and dropdown controls. Some have a related RequiredFieldValidator control. The RequiredFieldValidator is created as follows:
[Code]....
This method is called from the following section of code which inserts rows into a table. Insert location is marked with a PlaceHolder control (ID="tblInsertRow").
[Code]....
When the user clicks the "Save" button, I force a validation of all validators as follows:
[Code]....
The problem I'm having is that Page.IsValid is always "true". I read some older posting that stated that you cannot use RequiredFieldValidator with AJAX, but I don't believe that's true anymore since I've done it before with static controls. This is the 1st time I'm trying to do this with controls created at runtime. These controls are created in a User Control that is displayed on a Page with a Master Page.
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Mar 21, 2011
I'm creating an quiz application which queries the database and extracts the questions and choices. I use dynamically created controls such as a checkbox list and fill the values dynamically. How do I do this? Right now I have these functions:
array_random_init(); this creates a 10 element integer array from 1-20
- extract_question(i): this extracts a question indexed at i in DB, I created the controls and set the appropriate text in this function.
- validate_question(i); this is called by button_click and validates the question i according to DB.
I understand I have to recreate the controls in Page_init on postback, but what should it look like? Do I need to add "if IsPostBack" in page_init, or do I create the controls in page_init() and reset their properties in page_load when I use extract_question(i)? Also, I cannot seem to clear the selected boxes on postback, I added page directive enableviewstate=false" but it doesn't work. What's the right way to do it?
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Mar 28, 2011
When i use RequiredFieldValidator for Validation FCKEditor ,The first time that the form gonna submit, RequiredFieldValidator prompt (ErrorMessage) and indicate that FCKEditor is empty ,while it isn't .Again if you try to submit the form,It's OK and there is no problem .At this case user have to hit the submit button twice So i have to disable Client Side validation and validate form just in Server Side code which is not good.
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Oct 14, 2010
I am a bit baffled... I had my validation working fine till I added a validation group to it. Can someone tell me what i might be missing ? I'm at a loss... As I have another page doing the same thing and it works fine. Page.isValid always comes back as true.( I am just clicking on the button to make all the validation fire off.... )
[Code]....
[Code]....
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Apr 24, 2010
I have a registration form. Settings of this form, like which fields are required I get via webservice. So I need programatically validate this form. I decided to create variable count of requiered field validators in Submit click. The validator is created in external object that holds a field settings.
[Code]....
I tried to debug it and GetValidator() created RequiredFieldValidator, but in btnSubmitRegistration_Click after that, validator was null. Object lost it's reference. Where is the problem?
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Oct 20, 2010
Is it possible to add RequiredFieldValidator in DetailsView dynamically (programatically)?
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Sep 28, 2010
I'm creating an quiz application which queries the database and extracts the questions and choices. I use dynamically created controls such as a checkbox list and fill the values dynamically. How do I do this? Right now I have these functions:
array_random_init(); this creates a 10 element integer array from 1-20 - extract_question(i): this extracts a question indexed at i in DB, I created the controls and set the appropriate text in this function. - validate_question(i); this is called by button_click and validates the question i according to DB.
I understand I have to recreate the controls in Page_init on postback, but what should it look like? Do I need to add "if IsPostBack" in page_init, or do I create the controls in page_init() and reset their properties in page_load when I use extract_question(i)? Also, I cannot seem to clear the selected boxes on postback, I added page directive "enableviewstate=false" but it doesn't work.
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Feb 14, 2011
I have a website that sales associates access to view account information with clients. S.A's can only view information for accounts that they are tied to. Some clients have more than one account, S.A's can be tied to more than one account, but not all accounts of one client need to be tied to one S.A.
On the account info pages, I have account numbers (dynamically displayed labels) displayed of other accounts that the account client is associated with, which the S.A's can see. I'm modding this so that if the S.A has viewing permissions of any of the other accounts on that list of accounts, that instead of a label being displayed, a button directing them to that account page will display instead. In order for this to work, I have to attach a security function to the button, otherwise the page will blow out on the S.A's.
So I'm running a piece that is displaying a button instead of a label, which is working fine. My problem is when I try to attach the security event to the dynamically displayed buttons. It seems that the page just posts back and doesn't execute my code at all.
On my Page_Load, I'm running this after the buttons and labels are displayed:
For x = 0 to tblAccountList.Rows.Count - 1
'use a try to target the button, use catch to handle if it's instead a label, only one cell per row.
Try
Dim accountLink as Button = tblAccountList.Rows(x).Controls(0)
Addhandler accountLink.Click, AddressOf Me.PermissionViewCheck
Catch ex as InvalidCastException
Continue For
End Try
Next
I don't have any code checking for postbacks or anything like that, but the "PermissionViewCheck" event never fires and just reposts the page.
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Dec 24, 2010
In my ASP.Net application, I am using ajax accordian control on my aspx page and vb.net for code behind pages.
I have used validation summary for page validation.
1st accordian Pane contains following fields:
First Name
Last Name etc.
2nd accordian Pane contain following fields:
Address
City
Country etc.
while validating the page It displays error messages in following sequence:
Address cannot be blank
City cannot be blank
Country.....
First Name....
Last Name....
But I want to display error messages in following order:
First Name cannot be blank
Last Name....
Address cannot be blank
City cannot be blank
Country.....
I tried to resolve it by giving tabIndex to textboxes and RequiredFieldValidator, but sequence doesn't change I created RequiredFieldValidator again in sequence, but it doesn't affect.
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May 1, 2010
I have a design page with two panel,... i have to make it visible true or false by reading the values from the database,...
Design code
<body>
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Feb 15, 2010
I'm creating 14 textboxes for every day in a month and user can select the month so i have o create them dynamically. But i can't reach the values in the textboxes.
When i don't create them dynamically like
<asp:TextBox ID= "TextBox1" name="TextBox1"> </asp:TextBox>
I can get the value from the C# side by using the
((TextBox)Page.Form.FindControl("TextBox1")).Text
However this moethod doesn't work for the textboxes that i created dynamically. I'm creating them in a loop it's something like;
[Code]....
Then i add the text box to the necessary places at my table.However i can't reach the textboxes when i use the same method
((TextBox)Page.Form.FindControl("!A uniqe ID!"));
It gave a null value...
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Jul 20, 2010
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.aspx
<asp:Panel ID="pnlOuter" runat="server" Visible="false" Width="650px">
<table>
<tr>
<td>
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<asp:TextBox ID="txtQtnrName" runat="server"></asp:TextBox>...
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May 24, 2010
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for (int i = 0; i <= 5; i++)
{
Button boton = new Button();
[code]...
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A short background about this project: I'm creating an image gallery where images are uploaded and sorted into a category and then a subcategory, eg. "Vehicles" and "Cars". Every subcategory has a variety of tags to further categorize the picture, eg. color and make in the cars subcategory.
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[Code]....
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[Code]...
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I need to create web controls (e.g. label etc) dynamically.The problem is that for example,
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Jan 12, 2010
I'm using multiple file upload. I'm following this link [URL] . I can able to save multiple files. Now i want add textbox to all file upload. I can add HTML Text box. I don't know how to find that? I'm using following code to upload multiple files..
[code]....
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Mar 17, 2010
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Here the what I've got so far (simplified for posting):
_dr = bll.drGetData(id);
Panel panel1 = new Panel();
while (_dr.Read()){
DataList dl = new DataList();
NOTE: This is where I think I need to branch off the data into the 4 categories but I'm not sure how to implement it.
dl.ItemTemplate = new MyTemplate(LIstItemType.Item);
dl.DataSource = _dr;
dl.DataBind();
panel1.Controls.Add(dl);
AjaxControlToolKit.TabPanel tp = new AjaxcontrolToolkit.TabPanel();
tp.Controls.Add(panel1);
TabContainer tc = new TabContainer();
tc.Tabs.Add(tp);
this.Controls.Add(tp);
public class MyTemplate : ITemplate{
ListItemType _itemType;
public MyTemplate(ListItemtype Type){_itemType = Type;}
pubilc void InstatiateIn(System.Web.UI.Control container){
LinkButton linkb1 = new LinkButton();
linkb.DataBinding += new EventHandler(TemplateControl_DataBinding);
container.Controls.Add(linkb); }
private void TemplateControl_DataBinding(object sender, System.EventArgs e){
LinkButton linkb = new LinkButton();
linkb = (LinkButton)sender;
DataListItem container = (DataLIstItem)linkb.NamingContainer;
if(Convert.ToInt32(DataBinder.Eval(container.DataItem, "id")) >= 1) {
NOTE: Although here is where the databinding takes place so I woud assume the categorization the data can take place here as well but I dont see how.
linkb.Text = ...
linkb.CommnadArgument = ...
etc...
}
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Aug 26, 2010
I am using c#.net 3.5 in that i am creating <a> tag dynamically as
HtmlAnchor htmlanchor = new HtmlAnchor();
htmlanchor.HRef = "javascript:void(0)"; htmlanchor.Attributes.Add("onclick","document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block'"); [code]....
but its not working there is some javascropt error. as object required.
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Mar 10, 2010
I was looking through my transcender exam kit for 70-562 and they say load dynamically created controls in the loadviewstateEvent. This should be CreateChildControls() instead, no?
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Apr 6, 2010
I'm having trouble when removing a dynamically created control, cause, on page_load i'm creating a new controller so the control.count is not counting correctly.
Here's the code for removing a controller:
[Code]....
And if anyone is interested here's the whole code:
[URL]
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