I am using Javascript to create dynamic controls on the page I am not dealing with File Uploads, just creating custom field things.
I think I need to override SaveViewState and LoadViewState events to keep my controls in the ViewState.
Is it possible to access the html markup of programmatically created controls, and if so, how?
In c# you can write things like:
[code]...
I add HTML and tags to Page dynamically. But after every postbost, all values are empty. What can I do for Solve?
View 2 RepliesThere it is written that controls should be added in Init event rather than Load event for the added controls to participate in the Postback data processing.But whose Init or Load event ? Page's Init or the containing container's Init event?
View 3 RepliesI know this question has been asked thousands of times, and I've struggled with it before, but for some reason, I can't accomplish what I want to accomplish... I have a dynamically added LinkButton that when clicked will dynamically add a control (in this example, a textbox) to the same panel. The intent is to continuously add on as many controls as times the LinkButton was clicked (i.e. I click it once, one box, then another click will give me 2 boxes, another click adds a 3rd). In the code below, I use the current date and time serialized to create a unique ID for each textbox control.
When I execute the code, clicking "Add Filter" will generate a new textbox, but once clicked again will create a new one, and dispose of the one before it. Instead, I want to persist the previous textbox as well as any data submitted within it.In the aspx:
<asp:Panel ID="pnlFilter" runat="server">
</asp:Panel>
In the aspx.cs:
protected void Page_Init(object sender, EventArgs e)
{
LinkButton lb = new LinkButton(); [code]....
I need to generate a gridview with dynamic columns, on each cell I need a button that inserts-deletes a relationship in a database. The relationship is of course between what is represented by each column and row. I decided to use a gridview and create templatefields which I add programmatically to the table. I successfully got to that point but when i decided to raise a click event from the buttons or a rowcommand from the gridview I could not do it. I´m looking into doing this with button fields right now but I´m curious on how this can be accomplished?
Code:
[Code]....
I'm passing a List to an MVC view and generating checkboxes for each object in the list (The checkboxes are named t.Name).I'd like to be able to tell which checkboxes were checked once the form is posted. However, I'd like to avoid using the FormCollection object.
View 1 RepliesMy 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.
While generating dynamic controls like , textboxes, dropdownlist, checkboxes and radiobuttons, after filling the textboxes and etc and submit and then postback occurs, the dynamic created controls missing. I try to find a way to make the controls persist for validation checking. Tried to use Viewstate to store the pnlTextBoxes and etc, but it has serializable error.
[Code]....
So I have two UpdatePanels. I am dynamically creating server-side buttons in UpdatePanel2. When the buttons come out, they are not hooked to the asynchronoustriggers of updatePanel1.
So how can I dynamically add these triggers of these newly dynamically created buttons so that clicking these buttons will only cause a partial postback to UpdatePanel1 ? Right now, when I click these buttons, it causes a partial-postback refresh to UpdatePanel2 (the panel itself that which the controls reside in)
I have created a web form in which i have used user control there is link button on different link button user control loads . i have added dynamically webcontrol to that link button . they are loading properly but when i try to save data through one of user control on click of button the user control disapper from that place but when i put static user control to my page its working
View 1 RepliesI have a small form with some static elements that I am able to access with javascript the bring up a popup. 4 textboxes are generated and attached to a updatepanel. I've been trying various methods of validating the contols without generating postback.
I found anytime i registered a javascript to the scriptmanager the page must refresh.
Is there anyway it can be done?
I have a drop down list (created during form design) with auto postback enabled. And I use AJAX to prevent 'visible postback'.
When a user choose an item from the drop down list, the system will then perform a postback and created a set of form control's such as label, drop down list and text box for entry.
Then, I will have a button (created during form design), and when I click on the button, i want to find for the form control that are created after the post back, but I cant find them!
I wonder if those form controls are render to the web form?? But I have no problem finding the drop down list that is created during design time.
I created a templatefield programmatically and it works fine but whenever I clicked the button inside the gridview and do the postback my templatefield are gone.
View 3 RepliesIn design time I created a Gridview and a delete button in a page test.aspx:
[Code]....
The program stopped at statement "if ((row.Cells[COL_INDEX_SELECTED].Controls[0] as CheckBox).Checked)",
because it cannot find the checkbox created before.
I tried to shift all the code in Page_Load to Page_Init, but the ticked checkboxes are still lost.
I could find the ticked checkboxes names in its request object parameters(this.Request.Params.AllKey) if I setup a breakpoint on the error statement.
Does anyone konw what's happening and how to retrieve the selected rows?
I have an internal web search on my website. Previous, it has been used to search by our partnumber only. This was nice and easy
SELECT * FROM View_ProductRange WHERE PartNumber LIKE '%'+ @Search +'%'
I have now built an internal search.
[Code]....
However, I can't use paramaters because the paramaters appear to be 'applied' after the SQL statement has been built, so it would only add the final word the customer searched for due to the paramater taking the final variable at the end of the Foreach Loop. e.g.
[Code]....
Is there 1) a better way to search and 2) a safer option/method/approach.
FYI, at the moment I have
strSearch = strSearch.Replace("'", " ");
strSearch = strSearch.Replace("drop", " ");
strSearch = strSearch.Replace("table", " ");
strSearch = strSearch.Replace("Insert", " ");
strSearch = strSearch.Replace("amend", " ");
strSearch = strSearch.Replace("apend", " ");
strSearch = strSearch.Replace("delete", " ");
strSearch = strSearch.Replace(""", " ");
strSearch = strSearch.Replace("--", " ");
strSearch = strSearch.Replace(""", " ");
but I don't like that (there is a ToLower() method used)!
I have a grid view that is dynamically created.In which every cell in the girdview has a 2 textbox (cTxtboxQty,ctxtWorkOrder) and 2 label.
When user click on the cell, a pop up come out and user are able to change the text inside the cell and click save.After that the pop up close and changed data immediately reflected on the screen.
My problem is:
After my data are changed and updated to database on the pop up page and having it post back to the parent page , my dynamically created textbox in gridview retain old value even new value has been assigned to it.
This sound very weird but i have no idea how to solve this.
My client side code is as below :
[Code]....
[Code]....
[Code]....
[Code]....
I have tested many times and find out that it might be the page hold the old value in memory, so that even we have updated the textbox value, after postback, it still keep and show the old value?
Say I am creating a Textbox in the codebehind of a page like this:
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
TextBox test = new TextBox();
test.SkinkId = "MySkin";
placeHolder.Controls.Add(test);
}
and in my skin file I have this:
<asp:TextBox
runat="server"
SkinId = "MySkin"
Width="400"
/>
Why is the skin not beeing applied to the control. If i declare the control in my aspx page it works ok, but if I try to do it programatically it does not work...
I'm a newbie to ASP.NET and I have a following queston.
There is a HTML template in my project with some LI elements to create a multiple checkboxes on my page. Template looks like this:
[Code]....
These LI elements must be generated with standard asp:CheckBox in it for every value, retreaved via webservice request.
I am creating a LinkButton programmatically and render its HTML output into a Literal control:
[Code]....
The LinkButton appears in the page output, but is not rendered clickable. In the output HTML, the result looks like:
[Code]....
I need to generate a button way after the page loads but I can't work out how to deal with the Event handler. If I do this when the page loads as shown bellow it works as intended but if I use the exact same method in a button it fails. (it creates the button but when I click the button it just disappears instead of showing a msgbox."I know I shouldn't use Msgbox in a web form but I only do it as a test then remove it"
Code:
Partial Class Default3
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim mybutton As Button
mybutton = New Button
mybutton.Text = "Submit"
[code]...
I have a form that does a loop to create checkboxes. Here is the code in the loop:
LeftPosition+=120;
cbxDrives.Top = TopPosition;
cbxDrives.Left = LeftPosition;
cbxDrives.Text = d.Name;
CheckBox cbxDrives =
new
CheckBox();this.Controls.Add(cbxDrives);
This creates multiple check boxes on the form, and this works fine.
However, in the code behind for my button that the user clicks to execute the form, I cannot figure how how to read the values for the checkboxes. I've tried:
foreach (CheckBox cbxDrive
in cbxDrives)
{
}
but cbxDrives is not recognized.
I need to read through all of the checkboxes to see their values, so that the appropriate actions can be performed in the code behind.
I'm trying to manually create a button and add a Click event handler for it in code. However when the button is clicked the event handler doesn't seem to react on event (or event isn't called).
we tested the code in Visual Studio 2008 and everything worked just as it should. And I'm using Visual Web Developer 2005 XE. So I assume that I'm missing something to be done manually being in VWD 2005 XE, or the problem is in VWD 2005 XE it self.
here is what I'm doing:
[Code]....
Consider the following:The SomeEvent fires as expected when any of the dropdown's selection is changed. However if say DropdownList2 has a selection made then I make a selection with either DropDownList1 or DropdownList3, then SomeEvent fires again. What is causing this behavior and how do I get just a single raising of that event?I suspect that when the viewstate for the dynamcially created dropdownlists is restored and the selection restored, then the event is fired because technically the selected index did change when the control was recreated. The reason I suspect this is that the event fires the for each dropdownlist.
View 3 RepliesI have an html table with rows and cells. And I have dynamically created a label and would like to assign the label to one of the cells of the table. What I am doing is I have a JavaScript which executes a code behind method and it would not accept an already created asp.net label. So I have created the asp.net label programmatically but cant assign it to the table to display the text value of the label. Below is the code:
[System.Web.Services.WebMethod] public static void EndCandiateTest(){
try { totalTestMarks = ts.RetrieveResults();
grade = tsp.RawScoreAndGrade(totalTestMarks);
remarks = tsp.ScoreInterpretation(totalTestMarks);
testResults = "Raw Score: " + totalTestMarks.ToString() + "
Grade: " + grade + " Remarks: " + remarks;
ts.ShowResults(testResults);
} catch (Exception e) {
} }
protected void ShowResults (string results). I want to display this label in an already existing html table.
messageLabel.Text = results;