i have an array of buttons added to a panel control and need to reset them to their original values, is this possible pragmatically?
protected void Page_Load(object sender, EventArgs e)
{
RenderTable();
}
[code]....
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.
My problem is:
I've got a table, dynamically created, fill with a lot of dropdownlists witches IDs are dynamically created.
When a button is pressed, I need to scan all controls in the table and save their value.
But after the postback I can't no longer access to the table.
I am new to asp.net. I am trying to display some data from a database table using dynamic table in my page. I want to add checkboxes to a field in the database and would like to perform several tasks based on the values checked. The checkboxes are tied with the primary key field of the database. Here is the code snipet :
[Code]....
Now I have a button in my page. The functioanlity which I desire is on clicking that button I should be able to extract the values of checked checkboxes and perform some function.
I am creating a project that dynamically creates radiobuttons. So far, i'm done with creating those radiobuttons dynamically. My problem is getting the values from those radiobuttons. To get those values, I need to click the submit button, however it seems that the radiobutton value or the radiobutton itself is lost after I click the submit button.
here are my codes, though not my exact codes, it follows the same logic...
protected void Page_Load(object sender, EventArgs e)
Im basically listing a set of facilities in a datagrid. Like so:b Projectorcb Laptopcb TelevisonIn roomview, a check appears where a facility is availble in a room. This part works fine.The user can then edit the facilities, by clicking on the check beside each facility. When the update button is pushed I need to record the value of the checkbox, however I cant get the value of the checkbox.eres my codebehind:
[Code]....
I am using asp.net/c# application. In my application, I have a gridview.<asp:GridView id ="gv_QuestionList" runat="server"> </asp:GridView>In Code Behind, I created dynamic textboxes and DropDownLists on RowDataBound.
[Code]....
I have a Save button out side the gridview which stores all the row values into database. when I click the "Save" button, I lost dyanamically ceated controls like textbox,dropdown and values (on postback).How can i get all the dynamically created controls and values after the post back?
I have a Webcontrol, that I create completely dynamically and it contains radiobuttonList. How can I acces this radibuttonlist values, on pages where I register this control?
public class MyControl: WebControl
pnContainer = new Panel();
rbl = new RadioButtonList();
liResume = new ListItem("Resume", "Resume");
liReopen = new ListItem("ReOpen", "ReOpen");
rbl.Items.Add(liResume);
rbl.Items.Add(liReopen);
pnContainer.Controls.Add(lblReOpenTitle);
pnContainer.Controls.Add(rbl);
this.Controls.Add(pnContainer);
I'm working on an ASP.NET project in which the vast majority of the forms are generated dynamically at run time (form definitions are stored in a DB for customizability). Therefore, I have to dynamically create and add my controls to the Page every time OnLoad fires, regardless of IsPostBack. This has been working just fine and .NET takes care of managing ViewState for these controls.
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
RenderDynamicControls()
}
private void RenderDynamicControls(){
//1. call service layer to retrieve form definition
//2. create and add controls to page container
}
I have a new requirement in which if a user clicks on a given button (this button is created at design time) the page should be re-rendered in a slightly different way. So in addition to the code that executes in OnLoad (i.e. RenderDynamicControls()), I have this code:
protected void MyButton_Click(object sender, EventArgs e)
{
RenderDynamicControlsALittleDifferently() [code]
My question is, is this really the only way to accomplish what I'm after? It seems beyond hacky to effectively render the form twice simply to respond to a button click. I gather from my research that this is simply how the page-lifecycle works in ASP.NET: Namely, that OnLoad must fire on every Postback before child events are invoked. Still, it's worthwhile to check with the SO community before having to drink the kool-aid.
On a related note, once I get this feature completed, I'm planning on throwing an UpdatePanel on the page to perform the page updates via Ajax.
I have a menu. I use the menu's menuitemclick event to create a gridview (several actually) that is then added to a panel for display.The gridview paints perfectly until I try to add paging.I have successfully used paging and sorting declaratively for years, but this is my first attempt to do everything in code.When the gridview tries to databind, it throws an error:
[NullReferenceException: Object reference not set to an instance of an object.]
System.Web.UI.WebControls.GridView.get_StateFormatter() +25
System.Web.UI.WebControls.GridView.BuildCallbackArgument(Int32 pageIndex) +56
[code]...
Does anyone know how to pass values from adynamically created gridview checkboxes to a crystal report?Is it possible? I am using asp.net, vb.net and mssql. Here's my grid minus a few boundfields:
<asp:gridview id="grid" runat="server" autogeneratecolumns="False" cellpadding="4"
forecolor="#333333" gridlines="None" emptydatatext="No Products registered for this company...">
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" onclick="javascript:HighlightRow(this);" AutoPostBack="True"/>
</ItemTemplate>
<HeaderTemplate>
<input id="chkAll" onclick="javascript:SelectAllCheckboxes(this);" runat="server" type="checkbox" />
</HeaderTemplate>
</asp:TemplateField>
<asp:BoundField DataField="aid#" HeaderText="AID#" />
<asp:BoundField DataField="brandname" HeaderText="Brand Name" />
<asp:BoundField DataField="exp_date" DataFormatString="{0:MM/dd/yyyy}" HeaderText="Exp. Date" />
</Columns>
</asp:gridview>
I have an unbound gridview which is bound to a dynamically created datatable during the pageload event of my page. A simple matrix with x columns and y rows. I need all the cells to be the same size. I'll display my code below.
[Code]...
Im dynamically creating several dropdowns onclick of a button... but the dropdown returns null when im trying to get the values on submitting the form... i read tat during postback all dynamically created controls will be lost... s there a way to register the controls... i want to access the item selected in the dropdown .... expecting a positive reply...
View 1 RepliesWhat is the easiest way to reset all the controls on a web form. Can I set "veiw state" to false for all of the controls with one command, do a response-redirect to its own page, and set view state back to true. What is the easiest way to do it.
View 22 Replieswhat I am currently doing is creating an aspx form dynamically and saving its data by using Server.Transfer("PrssPage.aspx").
On ProcessPage.aspx I am using the Previous Page property to save the data entered by the user using the dynamically created form.
Each Dynamic Form is provided an ID for example 123.aspx
Now what I want to achieve is to repopulate the dynamically created aspx page with the user input values from database, plz note here that I do not have an aspx.cs page getting dynamically generated. I am only generating aspx page.
We have a web page that creates an MS-Word document using the following in the code behind:
[code]....
i have to create some files dynamically. those are referred in html anchor control.i want to process some requested files in asp.net worker process but IIS just intercept all these requests and show 404 page not found page. how can i avoid IIS bevaiour in such cases additionally i can not map these files extentions to IIS because i don't know there are so many???
View 1 RepliesI have a table thats created dynamically, the table gets its contents from a custom class I've created that gets statistical data from a database. As the table is generated dynamically, I've put the contents class (the table data) into a session object and I populate the table initially inside a !IsPostback then on the page init I get the data from the session (its empty on the firts page load). I am now getting this error: Multiple controls with the same ID 'controlnamehere' were found. FindControl requires that controls have unique IDs. How can I avoid this?
View 4 RepliesHow would I transfer the values of an array created at runtime from one page to another? I tried using Response.Redirect because single values are getting transferred, but this isn't working properly with the array.
View 1 Replieshow to use 4 dynamically created timers on a single page for incrementing 4 different variables(int).
View 3 RepliesI'm creating a Page object and adding a control to it for printing purposes. The code works, however I can not find a way to add a stylesheet link to the header. In the code I pasted I'm trying to add a link to the header and then add the header control to the page, but this causes an error:
Request is not available in this context
System.Web.UI.Page.get_Request() +8700216
System.Web.UI.HtmlControls.HtmlHead.RenderChildren(HtmlTextWriter writer) +83.....
Ive came into a problem when using partial page update. The javascript doesn't fellow. What i want to do is when i call a partial page update some of the update have controls that require a javascript code to be executed. When the partial update is done that javascript isnt here and cannot be found. So what is the best way to make a javascript file to fellow a partial page update ?
View 1 RepliesI have been using LINQ to SQL for quite a while (about two years). Every thing was fine until now. As usual, I created LINQ to SQL classes and built the project, then created an aspx page. However, I cannot see the DataClassesDataContext in the code behind file. It is not listed in the intellisense list.
View 5 RepliesI am using cascading dropdown list where the no of dropdowns is created dynamically on the page. The cascading drop downs are contained in a User Control. I need to call a method from the Parent page which will be executed when the values in one of the dropdowns change. The server side event is not firing as I have set AutoPostback property for the dropdownlists to be false. How can i make the Page event fired from the Selected index changed of the dropdowns keeping the autopostback property to be set as false.
View 5 RepliesI have a tree view with checkboxes for leaf nodes. If i click on checkboxes, I am creating some html controls dynamically. And in other static button click event I need to get an ID's of those dynamically created controls.
My Code is:
.aspx
<asp:Panel ID="pnlOuter" runat="server" Visible="false" Width="650px">
<table>
<tr>
<td>
<asp:Label ID="lblQtnrName" runat="server" Text="Questionaire Name"></asp:Label>
<asp:TextBox ID="txtQtnrName" runat="server"></asp:TextBox>...