I have a webcontrol that extends from System.Web.UI.WebControls.WebControl. It has 3 properties SelectedDate, MaximumDate,MinimumDate. During design time I use ArgumentException to ensure MinimumDate<SelectedDate<MaximumDate. How can I achieve this validation during runtime. ...more >>

Hi, not sure this the right place to ask this question, but don't know where else to put it. I am making a web application with a treeview. I would like to be able to move the nodes around in my web application, but the drag & drop events aren't available to me. Anyone know how to do this?...more >>

Hi, We have a custom control which contains a number of dropdownlists. Within the custom control class we have a handler for the SelectedIndexChanged event. This event fires when the user selects an item from the dropdownlist, but it's not firing when we change the selected value in the cus...more >>

I have the following tag in one of my DataList's ItemTemplates: <asp:ImageButton ID="btnViewQuestion" runat="server" BorderWidth="0" ImageUrl="images/qmark.gif" Height="27px" Width="26px" OnClientClick="window.open(<%# DataBinder.Eval(Container.DataItem,"questionid","'viewquestion.aspx?ques...more >>

I have an enum property in web control. I can set it to One, Five, Fifteen. It always returns "One" at runtime. Any suggestion. public enum Interval { One, Five, Fifteen } [Bindable(true), Category("Appearance"),...more >>

Is there a way to programmatically set the name of the Select, Insert, Delete and Update methods?...more >>

Hi, This question seems a little silly, but I want to dissable code lines using this way: <asp:Button ID="Button1" runat="server" Text="Button" /></div> <!--<asp:Button ID="Button1" runat="server" Text="ButtonOld" /></div>--> But I get an error about a duplicate identif...more >>

Hi, I have a DataList that displays a column of text boxes that the user can edit. Instead of having a button with a CommandName within the <asp:DataList> to submit the page, I have just a regular HTML submit button elsewhere on the page. How can I call the DataList's UpdateCommand even...more >>

I have a repeater I have bound to a custom collection of TicketLogEntries. If a TicketLogEntry is marked as private and the user is not an administrator, then the Item is hidden (code below). The question is: if I set an item's or alteratingitem's Visible property to False, can I also hide...more >>

I have a situation where I need to display an alert when somebody clicks a check box. I was able to get it to work with a plain <input> but when I try and do it with an <asp:CheckBox> I can't get the javascript right. Anybody have any thoughts? TIA - Jeff. ...more >>

Hi I have a gridview on my web page and I bind it to an object of my own creation. When I click a button on that page, I want to get the data from that gridview and cast it back into that object I created and start to do work on it. I tried something like this: List<MyObject> myObject = (Li...more >>

I want change the Label's Text value in client side by javascript I use getElementById to set control's innerText value but the new value can't postback to Server how to pass the value to Server? thanks ...more >>

Where can I download button skins? ...more >>

I want write a custom controls (Button or ImageButton derived) and want set the "name" tag to my custom value use this.Attributes["name"] = "MyNameValue"; or writer.AddAttribute(HtmlTextWriterAttribute.Name, "MyNameValue"); asp.net add my "name" tag but itself name tag still exists ...more >>

I need to dynamically construct a table in code (vb.net) that will have merged cells. It should look something like this: _____________ | | row 1 (contains an image control) _____________ | | | | row 2 (contains an image control, data, another image...more >>

Hi, I am using a gridview control in asp.net 2.0 and creating some dynamic template fields in it. Whenever I am trying to get the e.NewValues in the row_updating event , it is always nothing, Is this a know issue? If there is a work around please let me know. Protected Sub gridSystemLoo...more >>

Can anyone tell me why the below code returns error? Exception Details: System.IO.FileNotFoundException: Could not find file Dim strLFolder As String = "c:\Temp\F Files" Dim intClientID As Integer = 1221 Dim XMLStr As String = strLFolder & "\" & intClientID.ToString...more >>

Hi, I have a user control in which I set some style properties programmatically, like so: divMain.Style.Add("width", Me.PixelWidth.ToString & "px") Dim iInnerWidth As Integer = Me.PixelWidth - 2 ddlCategory.Style.Add("width", iInnerWidth.ToString) ddlLocation.Style.Add("width", iInnerWidth.T...more >>

Hello, thank you for taking the time to read this. I am totally stumped on this one. I have a ton of TD attributes that have to be changed based on the data in the DB. All TD elements are ID and runat=server. Changing the attributes of a SINGLE TD is simple: <td id=thisTD runat=server>...more >>

Hi, I am developing an application in ASP.NET using c#. I have embed windows media player into my website and play media files. When client is going to play Audio File it takes time for streaming, I want the streaming to happen while the page loads, so that user doesn't have to wait longer ...more >>

I am using Arraylist to populate a drop down I get outofmemoryexception at this line for (iYear = 0; iYear <= oYearsList.Count - 1; iYear++) { sHtml.Append("<option value='" + oYearsList.Add(iYear) + "'>" + oYearsList.Add(iYear) + "</option>"); } Wh...more >>

Environment: VS2005, sql server 2000, Win XP I put runat=server on a regular HTML table. Then instead of setting the style in the html I want to dynamically change the style of the html table border color. We'll it won't let you change the OUTER border color unless you use the styles attribut...more >>

I have built and used a custom control which works fine. I now want to add a property that I can set from the various pages where I use the control. I have added the following property in the code behind file: Public Property ContentTypeID() As Int16 Get ...more >>

I am looking for a date custom web control. The UI will have 3 drop down box. Each for day, month, year The control will have the following Properties Date (datetime) Month (int) Day (int) Year (int) MinDate(datetime) MaxDate(datetime) The control will have the following Methods Da...more >>

Dear All; i want to display data in dropdown list with extend alignment as follow: ADB.............1 Project WB.............12 Project WFP.............5 Project but if i concatenate string it display as follow: ADB........1 Project WB..............12 Project WFP........5 Project...more >>

I just wanted to share a solution I found to performing a dynamic image swap on a group of imagebuttons in a webcontrol. The scenario is I have a webcontrol with nothing but a table containing one column of imagebuttons in it. This wil be a typical button column for a vertical menu like on the...more >>

I'm using an asp.net 2.0 fileUpload control which works fine. What I'd like is that when a user clicks on the browse button the dialog shows thumbnails view instead of the default list view. Is there any way to acheive this? (vb.net if possible) Thanks James ...more >>

I was previously using a GridView control and the first field displayed was an image. I accomplished this with the following code: <asp:ImageField DataImageUrlFormatString="~/PhotoDisplay.ashx?photoid={0}&amp;size=small" DataImageUrlField="property_key" AlternateText="Property photo....more >>

I have tried for a couple of days to figure how to change the bordercolor of a DropDownList to match the background color of the page but to no avail. I have read and re-read the MSDN on it but I get either 'Could not load file or assembly' or 'Unknown server tag' depending on whether I use t...more >>

I have an application under development that contains, among other controls, two listboxes containing Available Tasks and Assigned Tasks. Let's say one of the Available Tasks is "Send Letter" and the user wishes to copy it over to the Assigned Tasks listbox; in that case, it's a simple matter...more >>

Hi, I'm having problems getting validation controls to set the focus back to the textbox that caused the error (or any error). Using ASP.Net 2 and IE 6. Does anyone have a solution to help me out on this one? Heres some code: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebF...more >>

Not sure if this is the group to post this question, but here it goes.... I just got a new laptop at work and they loaded the following 2 applications: Microsoft Visual Studio 2005 Microsoft Visual Studio .NET 2003 Arent they both the same thing, only 2005 is the latest? ...more >>

In VS 2003 there was a template for building a web custom control. In VS 2005 there is no such template. Where are the instructions for building a web custom control in .Net 2.0? -- Arne Garvander (I program VB.Net for fun and C# to get paid.)...more >>

hello, i have an inherited Textbox control that adds a customvalidator to its controls. This works fine. I have another composite control (radio button list) that contains this textbox control. I have a public property on this control that is used to set the CustomValidator.ControlToValidate with...more >>

Can I print to POS printer (printer for billing reports, bus tickets etc.) from asp.net aplication? I need to print ticket, then patrial cut and full paper cut. Can I do this from asp.net page and how? ...more >>

I have an equipment checkout app that I have that allows people to checkout a certain piece of equipment for a certain date and it works using a asp.net calendar control using vb.net and SQL as the backend. It works great, but now the request has come in that they want to be able to reserve a pi...more >>

I'm trying to create a categorized list of checkboxes using nested repeaters with an XML datasource. I was able to get a list displaying, but I cannot figure out the correct XMLNode references in the nested repeaters to get all the values I need. I used Fritz Onion's article to get started at:...more >>

[code snippets at the end] I have a page that allows the user to search a DB by querying one of 3 fields. When results are returned, I want the user to be able to click a value in one of three columns (that directly relate to the 3 searchable fields) and have the page postback and requery g...more >>

Bit of a noob question... I'm finally starting to move across .ASP.NET from ASP 3.0, and I'm trying to make the most of .NET rather than simply do what I did before, albeit with different syntax. I'm converting a simple ASP application to .NET as a learning vehicle. I have an application th...more >>

Hello I have a treeview Control, which works very fine. No postbacks etc when opening or collapsing the nodes. What I want to do now is, if a node is clicked, all other open menus will be closed. So I wanted to do something without the postback. Does anyone have an idea how this can be achi...more >>

Hi We're trying to maually deserialize the Personalization Blob for WebParts, seemed pretty straight forward, however we get the error "The serialized data is invalid." from the following code: <code> Using connection As New SqlConnection(My.Settings.Conn) connection....more >>