Change Visibility Programmatically From Page_load Method?

Jun 9, 2010


<asp:CommandField ShowDeleteButton="false" />

How to change visibility programatically from Page_load method?

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I am trying to add controls on the page from the backend in the page_load stage. Here is my code:

foreach (FileInfo fi in dirInfo.GetFiles())
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Programmatically Loading UserControls with Page_load Event?

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I have a gridview with some data and two hyperlinkfields.I want to make the first hyperlinkfield of the first row not visible and the second hyperlinkfield of the last row not visible.this what I did till now

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This will work only for the first hyperlinkfield.Omitting the comments will make the first hyperlinkfield not visible for all rows.

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I want to change controls visibility on c#, but nothing happens. The controls are in an AspxPopupControl and 3 of them are hidden in design time, 1 of them is visible. I use this code to visible them

if (paramType == "Grup")
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This code is in a CustomCallBack event of a gridview. So i don't know what to do from this point. It's an easy task but i couldn't handle it.

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C# - Modify Page_load Method For Radiobuttonlist?

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I have a page with radio buttons and a textarea that populates data dynamically based on your selection. The radio buttons act as a list of article titles and on selection you see the content of the article.

Within my pageload method, I want to allow users to be able to see a URL in their browser that points to value they've. That way they can link to the article within another source.

Currently, the method I have allows me to link to the button selection if I manually type in the following example URLs:



I'd like to modify this so that the URL appears in the browser when a radio button selection is made. Plus, on page load defaults to the "0" index if no value parameter was specified.

protected void Page_Load(object sender, EventArgs e)
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I am using calender control I want to change it's visibility on button click event. This is my form design:

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How To Change Label Text/visibility When Inside A Datalist Or Repeater Using VB

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Need Debugging Hints: Visibility Change On Postback Works On One Page But Not Another?

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I have a webform containing a user control. On that user control is a set of radio buttons. When the radio button is changed, a panel and a text box is shown or hidden depending on which radio button was selected.I can give you an example that works correctly:testcontrol.aspx:

<asp:RadioButtonList ID="ChoicesRadioButtonList" AutoPostBack="true" OnSelectedIndexChanged="ChoicesRadioButtonList_SelectedIndexChanged" runat="server">
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Forms Data Controls :: Change The Visibility Of A Field In Dataview?

Jul 17, 2010

I have developed my application using Visual Web Developer 2008 express with Visual Basic code.

If I am working with 2 textboxs on a form, and I set the "Autopostback" to "true" for the first texbox then on the "changed" event, I can just add code to set the visibility to "true or "false" for the second textbox - it works fine. However, I do not seem to be able to figure out how to do the same thing when I am using a Dataview.

I have a table called "Customer" that contains 4 fields "CustomerName", "BasePrice", "LevelOfActivity", and "Discount".

My user enters information into this table using a Dataview form that displays the 4 fields.

When the user enters the value "L" in the field "LevelOfActivity", I would like to then set the visibility of the field "Discount" to "false" - (I want to hide the field as this customer should not get a discount). If the user enters the value "H" in the field "LevelOfActivity", I would like to then set the visibility of the field "Discount" to "true" - (I want to show the field so the user can enter the "Discount").

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Web Forms :: Change Visibility Of DataList Labels After Binding Using Code

Jul 7, 2012

I have  Table   named    PRODUCTS , that have 4  column   productid, productprice,productname & discount( type  numeric(18,0)) .. i am using datalist with itemtemplate that have  4  label to display all ..

I am binding datalist on pageload, now i want that Label4  with "discount" should only visible for those product that have discount , otherwise it remains hidden, 

Problem in my code is that when i run it , label becomes invisible for all  products whether they have discount or not. Here is my code i am using for it:

ds1  is my dataset 

 foreach (DataListItem item in DataList1.Items)  {
                            for (int i = 0; i <= ds1.Rows.Count - 1; i++) {
                                double[] arr = new double[ds1.Rows.Count];
                                double temp = double.Parse(ds1.Rows[i]["discount"].ToString());
                                arr[i] = temp;
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                            }  }

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Web Forms :: Setting A Variable In A Page_load Method?

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In the following code, you'll see that the method 'getImage' is called and passes in a filepath. I want this filepath to be dependant upon a selection on a previous page- so instead of it constantly being 'properties/cedar', it could be 'properties/eastlodge' for example.


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If I use an ImageButton or LinkButton, I just noticed that when clicking either, the Page_Load method executes before the method specified in the OnClick. Can this be avoided so that the method in the OnClick is triggered instead of Page_Load?

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Apr 4, 2010

I have a details view with buttons in the footer. When the user clicks the edit button the calls the ChangeEditMode() method. I want to change the mode of the details view to edit mode which seems to work fine. It goes into edit mode with a text box. I also want it to set the visible property of the edit button to false and set the visible property of the update button to true. Then while still in edit mode the user can click the update button that will call the appropriate method to persist the changes.

I got the changemode() to change to edit but can't change the visible property of the buttons correctly. This is what I have so far. Can some one please tell me what I'm doing wrong?



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I'm trying to change the visibility of a imagebutton to false, if the imagebutton.ImageUrl="". The problem is that the imagebutton is inside "ListView2", and "ListView2" is inside "ListView1". Who can I do this in vb code... or even a javascript.

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Page_load Fires Twice For UpdatePanel Refresh Whilst Having A JQuery Bound Change Event On A Dropdown List?

Sep 11, 2010

I've tried to wrap up my problem with a complete example below - the original problem is part of a jQuery plug-in that I'm writing to extend the behaviour of an ASP.NET ajax application I already have.

The aspx page below has one drop down list which is marked for auto post back. I've also bound a change event using jquery (which ultimately I will swap for a .live() event to maintain the binding after the update panel refresh.) The problem is, when the jQuery event is bound I see two ajax begin requests and page_loads fire but only one ddlTest_OnselectedIndexChanged event. One of the page loads is malformed too - the content-length states it's about 300 bytes long whilst the totalBytes is 0 and form data empty. This does not happen if I bind to the click event of a button.

why the erroneous page_load event is firing ?


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Forms Data Controls :: Change Values / Dropdowns Without Rebinding Old Data And Updating Visibility Of Panels Based On Predefined Rules

Aug 26, 2010

I am working with a formview edititemtemplate. Currently in my page load, i have some stuff that would show or hide certain panels based on dropdownlist values. These dropdown values get binded during page load. I need to be able to change the values/dropdowns, without rebinding the old data, and updating the visibility of the panels based on predefined rules.

I have experimented with putting my formview.databind() in page load if isnotpostback, in prerender, in prerender if isnotpostback. I have tried my rules (ex if ddlState.selectedvalue = "DE" then pnlDelaware.visible = "true") in the page load, and the page render. I'm just not sure how to get the stars aligned here. The closest i have come is having the databind in the pageload if notispostback, and the rules in the prerender. However I get an error "dropdownlist has a SelectedValue which is invalid because it does not exist in the list of items.

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I wish to make a script which programatically send the POST data to one server and then the other server receive the POST message and retrieve the information. How should make this work? I already successfully write the sender site, the code as follow:

string postData = "id=0&co=5";
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I've a control

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btnAjax.ID = "newButtonID";

But it is now working. Is it possible at the first place?


I've created the control in the HTML mark up and not through code.

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Me with, I had intalled a new keybord layout and I want to enter data in the textbox using the new keyboard language but save the details in sql server table in default keyboard layout . So how can I change the keyboard layout only at the time of insertion

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