Hello, I am placing a required field validator control to ensure that some data is entered into a textbox, but when I bring up the web page, the required field validator only generates a client side error AFTER the user has modified the field once, and erased all data, and not if a user tabs t...more >>

Hello, I recently read an article on developing extender controls for a windows application. My question is, can you only create extender controls for a windows application, or can you also create extender controls for webforms? If you can also create extender controls for webforms, does an...more >>

How do you (or can you) bind a texbox to a datasource since the textbox doesn't have a datasource property. Thanks, Mike ...more >>

hi I am getting the following error very frequently: The View State is invalid for this page and might be corrupted I have searched the web and found the Microsoft article http://support.microsoft.com/default.aspx?scid=kb;en- us;323744 but could not resolve the error. The article says: A...more >>

I am stumped on an editablegrid error msde webmatrix one table (orders) two fields (orderID,custname) error on update command text in following subroutine any suggestions ???? ============================================ Sub DataGrid_Update(Sender As Object, E As DataGridCommandEven...more >>

Is there a way to put a timer control on a webform? What I want to do is rediredt to another page after 5 seconds. Thanks, Eddie ...more >>

Hello, I would like to create some type of client-side validation that will change the background color of a textbox (say to red with white text) when the entered data is invalid (i.e. not numeric, not a valid date, etc.)... I have figured out one way to do that using javascript, and the exi...more >>

hi! I've got a Web Custom Control within which I'd like to use LinkButtons. This looks more ore less like this... protected override void Render(HtmlTextWriter output) { output.WriteLine(); output.WriteFullBeginTag("P"); LinkButton b = new LinkButton(); b.Text = "Bla"...more >>

I have a custom control that I developed working fine. When I deployed it to my staging server, I copied the DLL into the global assembly cache just using drag-n-drop. This worked fine and the .dll was registered. However, when I ran the application, I got a "Parser Error" indicating that the ...more >>

Im populating a drop down list box from a database, and Id like the top row to be blank - or be populated with the words " select from entries below ", or something along those lines. I suppose I could do this at the database level, but it seems it would be cleaner if I could populate the c...more >>

Having spent several fruitless hours trying to set the value of checkboxes in a checkboxlist control, and then another hour or two searching google discovering many other people with the same problem (but no working solutions) I finally came across a reference to a post in this group from a MS s...more >>

Hello, I have a repeater control data binded to an sqldatareader. There are a total of 10 columns. Of the 10 columns I only want to show the first 3 columns once at the top of the table and the rest of the columns displayed per row. How do I do that? Am I using the wrong control? I tr...more >>

Hi, I tried to set up a label control to be invisible/visible property to be false/true at run time. I am using C# and .Net ASP development environments. For example, my control' name is lblName. I set it up as lblName.Visible = false at run time. I would like it to take it im...more >>

Hi, trying to use Microsoft Treeview control w/dynamically populated nodes. The problem is that the first node in the tree is always selected and as a result when user clicks on it, OnSelectionChange event can not fire. So if a user has permissions to see only one node then he can not do anythin...more >>

I am attempting to implement paging with a DataGrid. The control populates fine. The < > paging links appear. However when I click the > to go to the next set of information I receive "Server Error in ... Application. Index was out of range. Must be non-negative and less than the size of...more >>

hello, i know how to set values for each control on my windows-form. but how to do this in asp.net?? example for windows-forms: dim txtBox as Textbox dim myControl as Control for each mycontrol in control is typeof mycontrol is textbox then txtbox.text = "Hello" end if next ...more >>

Hi, How do I read a jpeg image from a folder on a server, and give it to a user as a file that his browser would download it (stream it) directly without sending any HTML tags. Here is exactly why I need it: 1) User goes to a page image.asp 2) image.asp would connect to a database and ch...more >>

Hi, I have Win XP Profession OS. I have made ASP.NET applicaiton using C#. In that i have put 4 controls(1 Edit Box, 2 Label Text, 1 Button). Now when i build the application and run it, it opens my application web page on Internet Explorer. But it shows only Label Text. It can't show B...more >>

Hello, I have a web page (vb.net within VS.NET 2003) where we have approximately 15 columns that we would like to display via datagrid. Given the avg screen size is not enough space to see all of this without scrolling back and forth, I was curious what options I may have to display all the d...more >>

Hi, I've been looking for a good Trace message monitoring tool to monitor trace messages (through System.Diagnostics.Trace.WriteLine() etc). I need it to collect traces from non-EXE code (esp. WebParts). Can anyone recommend a good tool for my purpose? Many thanks in advance. Rukmal....more >>

How do you get the client ID of a control located within the footer ? Thanks ...more >>

Is there any way to assign css classes to items in the datagrid? For example, I want to set the alternating feature to a css class. How would I do this? ...more >>

Greetings all, I'm in a bind this time - I've got a beutifully created and working(mostly) editable datagrid, all created in code behind - which works really well for my application. The only issue preventing me from moving on is I can't pick up the values in my updatecommand sub - the ones...more >>

I have DataGrid and I need select row. I don't want to use ButtonColumn! I want to select row by click on any position on DataGrid table and I want to get DataGrid.SelectedIndexChanged event. Thanks ...more >>

In my project I am uploading file using File control. After browsing file user needs to select other values from DropdownList to determine uploading path. After selection in couple of drop down lists page needs to postback. The problem is File input field becomes clear after posting pack of the...more >>

Hi, Quick question - when developing custom controls - which is the better way to hook into the lifecycle events - through overriding the methods (OnInit) of via events (Init)? I suspect there may be some additional overhead through the events approach.. Thanks Donal ...more >>

Hi, I have a component. It will create a number of tables and buttons. When a button is pressed it executes code and next it has to execute some javascript. All this code (javascript) has to be inside that component. I cannot add javascript to a page. (this component is being used on a numbe...more >>

I have a custom control that I have created and compiled into a DLL. I've had a number of clients tell me that they'd like to purchase the control. For clients, I have no problem giving them the DLL, as I'm sure they're not going to give it away. But if I want to sell the control in general, what...more >>

¿How-to read port RS-232 from a ASP.Net on the client? I want to read from the client PC, the port rs-232, and then the string that I should get... send it to the server from the client. I would apretiate any help about this, thanks in advanced. Arturex. ...more >>

Hi, I am new to ASP programming and have been creating ASP.NET applications and I am trying to figure out how to keep the cursor position after each button or text box call back because it keeps getting repositioned at the top of the page. Someone on my team told me that in old ASP this wa...more >>

I am running into a problem with ListBox and DropDown controls being displayed over top of the Calendar control. I have tried putting the Calendar in between div and span tags but to no avail. The Calendar will display over top of a Textbox control just fine but not over DropDown or ListBoxes....more >>

I've built a composite control which I then put into a datalist control. When I run my web page I only get one rendering of my composite controls all of the other items in the list are the default text from the control. This is my first attempt at building a composite control so I'm sure I...more >>

Hi, I have very simple WEB form with 1 ListBox and 1 Button. Fillig ListFox is OK, BUT in Sub Button_Click(..) I always see, that ListBox.SelectedItem always returns 0. Any idea? Thanks advice Michal Rezler michal.rezler@centrum.cz ...more >>

..net newbie getting used to things and am in documentation overload. Can't seem to find info on what should be a simple/common thing. I've created a text input control on the fly: Dim item As HtmlInputText = New HtmlInputText item.ID = "testitem" Page.Controls.Add(item) How do I g...more >>

Hi! is there a free module somewhere available to upload pictures? regards, gicio ...more >>

Hi I have to use DropDownList to display some long names and I have limited horizontal space. When I assign specific width to this DropDownList, I cannot see whole text, only first few letters (depending of course on given width). Is there any way to wrap words in DropDownList? On MSDN site they...more >>

I have put a HyperLink control on a page. When I click on the link I am expecting the next page to display. However, when I run it through the debugger I can see that the page where the link resides is being processed again and the link object is not set. I have put "If not IsPostBack th...more >>