Markup Code Inside Custom Server Control?

Dec 29, 2010

I'm new to custom server controls and I'm hoping to use them to build various 'modules' for different sites I build to cut down on duplicate code.

I'm familiar with custom user controls in which I can create an .ascx & .ascx.vb file which can then be imported into an .aspx page and used freely.

However, with custom server controls I cannot find a way of using markup/html code. Is this possible at all or must all code be created programmatically?

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Asp.net Mvc - Why Does Normal Markup Inside An @Using Html.BeginForm Need An @

Apr 19, 2012

When I make an HTML form for MVC 3/VB with the Razor engine, I would expect to be able to do it like this:

@Using Html.BeginForm("Action", "Controller")
<fieldset>
@* Other form code and values *@
</fieldset>
End Using

But if I do that I get "BC32035: Attribute specifier is not a complete statement. Use a line continuation to apply the attribute to the following statement." I need to add an @ character before the opening tag to avoid this error.

Handles Button.click Event From Custom Control Inside Other Control?

Jul 29, 2009

I've created my own ascx control with button inside it. Now I'm using this control inside other control. (In my case it is a webpart). What I would like to do is program button.click logic from my custom control inside webpart

Calling DoEvents From Inside Custom Control Library

Sep 21, 2010

I have a custom control's library. Now there's a control which looks like a panel, and when it opens up I want to animate its vertical growing like this:

For h As Single = 0 To finalHeight Step 0.5
Me.Height = CInt(h)
' HERE I WANT TO CALL DoEvents'
Next
Me.Height = finalHeight

If I don't call DoEvents in the loop then the animation is not shown, I only get the final height without a visual feedback along the way. I can call DoEvents from inside my main WinForm project, but can't inside a library. How can I do that, without drowning into the deep threads waters?

C# - Running A Server Control Inside A MVC View Page (asp.net)?

Apr 1, 2010

I know i can run webforms and mvc views in seperate files, but i want to run the web server control output and events in/on the mvc view page, however, i keep getting this compiler error:

Line 38: <CuteWebUI:Uploader ID="UploadPic" runat="server" UploadType="IFrame"
Line 39: FileTooLargeMsg="{0} cannot be uploaded! File size ({1}) is too large. The maximum file size allowed is set to: {2}."
Line 40: TempDirectory="~/UserData/Images/TemporaryImages" UploadingMsg="Uploading..."

[code]....

i don't know what else do do, it just wont recognize the control name when im writing the event signature, right after the "handles" keyword, comes the server control name and then a dot, and then the event name, but as events its just giving me "Me", "MyBase" and "MyClass" options to run events for... doesn't let me access "FileUpload.OnFileUploaded" which is the control name & event name i want to write the sub routine method declaration (and subsequently method) and signature for.

Output Data To Text File In Asp. Markup Code?

Sep 27, 2010

I downloaded some sample code which includes a database query within the markup code. It makes a query to the database and displays the results of the web form and I would like to divert the output to a text file and I am not sure how to do this?Can this be done from here or would it just be easier to code it in the source and make a new connection to the database?

Sample code:

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionStringIP %>"
DeleteCommand="DELETE FROM [ip-to-country] WHERE [ID] = ?" InsertCommand="INSERT INTO [ip-to-country] ([ID], [BeginingIP], [EndingIP], [TwoCountryCode], [ThreeCountryCode], [CountryName]) VALUES (?, ?, ?, ?, ?, ?)"

[code]....

Asp.net - Control 'GridView1' Of Type 'GridView' Must Be Placed Inside A Form Tag With Runat=server?

Apr 12, 2011

I have a problem with My dataGridVew. i am trying to export data from my DB to excel fie. it's a small page where there are only data grid view and button to export like this :

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>

[CODE]...

When i click on the button error message is coming : "Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.???" even i have placed it in form ?

How To Set Description Of A Property In Custom Server Control

Sep 2, 2009

I have created a custom Server Control and I want to add a description to the properties and events that the control holds. I have looked over the Internet and came up with the following.[code]Unfortunately this does not seem to work in visual studio .net 2008.

Asp.net - .NET User/server Control With Custom List Items?

Feb 18, 2011

I'm attempting to create a simple menu user control just as outlined here. The attached code results in an "Object reference not set to an instance of an object" error, but I can't figure out why.

<%@ Master Language="VB" CodeFile="MySite.master.vb" Inherits="MySite" %>
<%@ Register src="Controls/Menu.ascx" tagname="Menu" tagprefix="my" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">

[Code]...

C# - Placing A Variable From Code Behind Inside Repeater Control For NavigateUrl?

Apr 26, 2009

This is my Repeater

<asp:Repeater ID="blogRepeater" runat="server">
<ItemTemplate>
<br />[code].....

Now I have a variable called My_Variable. How can I place that variable My_Variable inside my Repeater above?

Asp.net - My Custom Server Control Is Generated As System.Web.UI.UserControl In The Designer File?

Feb 16, 2012

I created a server control which consist only of fews buttons.

CWNavigation.vb
<ToolboxData("<{0}:CWNavigation runat=""server""></{0}:CWNavigation>")> _
<DefaultProperty("Id")>[code.....

I then referenced it in my ASPX page. Take note that the control are in the same solution, same project located in Commun/Navigation/CWNavigation.vb.

<%@ Register TagPrefix="NAV" TagName="CWNavigation" Src="~/Commun/Navigation/CWNavigation.vb" %>

I added it to the page.

<NAV:CWNavigation ID="CWNavigationService" runat="server" />

But the designer file along with the code-behind generate it as.

Protected WithEvents CWNavigationService As Global.System.Web.UI.UserControl

C# - Use ResolveUrl() To Set Some Paths In The Code Behind Of A Custom ASP.NET User Control?

Mar 31, 2010

I'm trying to use ResolveUrl() to set some paths in the code behind of a custom ASP.NET user control. The user control contains a navigation menu. I'm loading it on a page that's loading a master page.When I call ResolveUrl("~") in my user control it returns "~" instead of the root of the site. When I call it in a page I get the root path as expected. I've stepped through with the debugger and confirmed, ResolveUrl("~") returns "~" in my user control code behind.Is there some other way I should be calling the function in my user control code behind to get the root path of the site?

Globalization - Globalize Custom Control Text In Code Behind

Jun 12, 2012

I have a web application which uses the globalization values being passed from sql server 2005 using a ResourceProviderFactory. I can globalize the labels in UI using <%$ Resources: "Resourcekey" %> however, i wish to know how i can globalize the dynamic/custom controls available in the code behind of my vb.aspx page?

Wpf - Bind To Custom Control Properties Defined In Code Behind

May 14, 2011

I have a custom control defined in code-behind:

Public Class MyControl
Inherits Button
Private _A As String

[Code]......

What code I have to write to bind to those properies?

Asp.net - Programmatically Change Custom Attributes Of User Control In Code Behind?

Jan 21, 2012

I have a User Control which is a customer input form.I'm working on a sales system, when generating a sale, the customer data is populated by a Javascript Auto Complete, but when loading a saved sale, I need to paste a User ID into the control programatically.

<controls:customerDataForm ID='customerForm1' partExchangeMenu="true" showBankDetails="false" customerID="****" runat='server' />

Renders my control on the page within the markup of the parent document (in this case it's called newSale.aspx)In the code behind in newSale.aspx.vb I need to be able to programmtically change the value of the Controls customerID attribute. I can't seem to do it.This is what I have done, following various Googling attempts, but it is always leaving the customerID as zero

Protected Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Init
customerForm1.customerID = "0" '// default Customer ID if no invoice number
If Request.QueryString("invno") <> "" Then

[code]....

Creating Custom Control By Inherits BindingNavigator - How To Add ToolStripItem By Code

Sep 28, 2010

I'm creating a custom control which inherets the BindingNavigator.I need do add one ToolStripButton at specific posistion (9 element) on the ToolStrip of the BindingNavigator.So, I wrote the following code:

[code]...

Referencing XAML Custom Control Names And Properties Within Code Behind?

May 13, 2009

I've created a Custom Control, and I will be placing a large number of instances of that Custom Control on my xaml page. In working with that Custom Control in the VB Code Behind, how do I do the following?

How do I reference the name of the Custom Control (in my VB code) which was clicked with the MouseLeftButtonDown event? For example, if I have 10 instances of my Custom Control in xaml, each with a different x:name (say 1-10), when a particular instance is clicked, how can I see which one was clicked? I've tried a number of things including e.OriginalSource.Name (which returns the component within the control which was clicked and not the name of the instance of the control). My Custom Control consists of numerous parts and pieces (Rectangles, Lines, Text, etc). Each of these items is a part of my layer. In VB code, once I can reference a particular Control, how can I hide or change certain parts of that control (such as hiding a Line, and changing the text). Also, I need to modify more than just the control which was clicked, so I need to be able to access properties of all of the controls, not just what was clicked. For example, if I click Control instance Test1, I also need to modify Test2, Test3, and Test5 in some way.

Here is some test code I through together as part of a Silverlight project using MS Blend 2. My control is much larger, and I need 200 - 250 instances/copies of that custom control, so I really need to know which control instance/copy was clicked.

My UserControl:

<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

[Code].....

Handle Value Change Of Control Inside UserControl Inside FlowLayoutPanel?

Apr 30, 2012

I am making an invoicing application. I have a label (lblCost) inside of a UserControl (InvoiceEntry) inside of a FlowLayoutPanel (pnlEntries). InvoiceEntry represents a line item on the invoice, and pnlEntries is the "body" of the invoice. pnlEntries can hold several InvoiceEntry controls.

I am attempting to sum all of the lblCost values from each InvoiceEntry control to make a subtotal, and I want that subtotal to change automatically if costs are changed (e.g., a change in quantities being ordered). Is there a way to handle when the lblCost.Text property of any of the InvoiceEntry controls contained within pnlEntries changes?

InvoiceAdd.vb:

' Instantiate objects of the various database interaction classes.
Private mCustomer As New Customers
Private mItem As New Items

[code]....

Create A Custom Class That Has Inside An Array Of Another Custom Class?

Jan 31, 2011

I want to create a custom class that has inside an array of another custom class (see my code below) but when the programm runs is crashes. Why? What is the right expression???? Plz help I'm a newbie in VB.net.....

Public Class ctrarray
Public nameclass As String
Public ctrlindex(glvar_spaces) As ctrlindexclass
End Class

[code]....

Specify A Custom Icon For Display In The Toolbox Window When Create Own Custom Control?

Dec 29, 2011

how to specify a custom icon for display in the toolbox window when you create your own custom control? Something other than the dreaded "gearbox" icon.

Access To Datalist Event Inside Another Databound Control & Finding Controls Inside Nested Datalist?

Oct 27, 2011

I have a DataList inside another DataList. I want to access the child DataList "dlQuestion" events, ItemDataBound event. Also, I'm tring to find the control LableControl "lblQuestion" in the child datalist. How do I do that? Here's the mark-up:

<asp:DataList ID="dlSection" runat="server" Width="100%">
<ItemTemplate>
<div>

[code].....

.net - Arraylist Of Custom Classes Inside My.Settings?

Oct 17, 2010

I have a Visual Basic .Net 2.0 program. I'm moving the settings from an older settings file, to an app.config program settings file. I'm trying to do this as nicely as possible.

So, I added my setting as shown in this image.

On load I do this:

If My.Settings.databaseConnectionSettings Is Nothing Then
My.Settings.databaseConnectionSettings = New ArrayList()
End If

[Code]....

So, the question is, how do I get that arraylist of my DatabaseConnectionSettings saved to persistent storage? I want to do this in the cleanest way possible. That is, I don't want to have to convert it to a string or save it to a separate file every-time I want to use it. I would like to be able to use the My.Settings accessor method.

Custom Control With Custom Collection Property?

Jul 11, 2011

I have an ASPX Custom Control which is supposed to load it's properties into an internal collection (defined with PersistenceMode.InnerProperty). Here's the ASPX

<cc:CustomControl runat="server">
<Queries>
<cc:QueryTypeOne ... />

[code]...

Changing Text Of Custom Control Based On Text Of Another Custom Control

Jan 11, 2010

I am using custom textboxes and I need to be able to set the Text on txb1 based on the Text of txb2. I have simplied my code to the following:

Public Class customtextbox
Inherits TextBox
Public Event ControlReset()

[Code]....

So, when txb1 looses focus, if its Text is "fried", then it sets off txb2's ProcessAlert function. I had tried to change the value of txb2 Text in ProcessAlert function, but didnt work, so I tried to get it to raise an event instead, which then tries to set the Text property. However I still cant set txb2's Text property. The Text property seems to be set for the duration of the "life" of the Event handler. When I step through the forms controls within the Event handler, the changed Text value is there, but not outside of the Event handler.

Datagrid Inside MdiChildren NOT Applying Custom Format?

May 24, 2012

I have a datagridview (windows forms) that is inside an mdiChild form. The custom format is given by a "for" instance, something like this:

For row As Integer = 0 To .Rows.Count - 1
If .Rows(row).Cells("someNumber").Value = 0 Then
.Rows(row).DefaultCellStyle.BackColor = Color.DarkSeaGreen
End If
Next

So, for every row in the grid that you find, if ther value in the "somenumber" =0 paint the whole row green. Problem is, if I put the form OUTSIDE of the MDIParent - just put frmMyform.show() in my btn that calls the form-, the grid WILL apply the format; If I call it like frmMyform.mdiparent = frmMdi, then frmMyform.show, the grid WILL NOT apply the format.

Asp.net - Adding To Page Control Collection From Inside A User Control?

Feb 12, 2011

I have an asp.net usercontrol which represents a "popup" dialog. Basically, it's a wrapper for the jQuery UI dialog which can be subclassed to easily make dialogs. As part of this control, I need to inject a div into the page the control is used on, either at the very top or very bottom of the form so that when the popup is instantiated, it's parent is changed to this div. This allows "nested" popups without the child popup being trapped inside the parent popup.

The trouble is, I can't find a safe way to inject this div into the page. A usercontrol doesn't have a preinit event, so I can't do it there, and calling Page.Form.Controls.Add(...) in Init, Load or PreRender causes the standard exception "The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases."

I thought I had found a solution by using. ScriptManager.RegisterClientScriptBlock(Page, Me.GetType, UniqueID + "_Dialog_Div", containerDiv, False) which seemed to work well normally, but recently a coworker tried putting an UpdatePanel inside the dialog and now she's getting the error "The script tag registered for type 'ASP.controls_order_viewzips_ascx' and key 'ctl00$ContentBody$OViewZips_Dialog_Div' has invalid characters outside of the script tags: . Only properly formatted script tags can be registered."

How are you supposed to add controls to the pages control collection from inside a user control?

C# - WINFORM Or WPF: Trigger Custom Event Inside The Constructor Of The Class That Emits It?

Nov 17, 2009

I have a userControl11 (either in winform or wpf) which has a ValueChanged custom event. If I put it in client form and in form_load set its value to 100, it will trigger the ValueChanged event. But if I set this value inside the constructor of UserControl1 the custom event won't trigger. How can I force it to do so ?whatever the technical reason, functionally it does make sense. If the object is initializing its value from some sources unknown to the client form and the client form has a textbox bound to this usercontrol value, it is sure convenient that it could refresh its textbox at any time including when the form loads just using one single event handler. Without this the client form has to create another initializer for this bound textbox at form load.

Below the source code of my trials in winform:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;

[code]....

Reference A Control Inside A User Control?

Nov 16, 2010

I have created a user control and am able to add it to a page with out any problems, but how to I reference a control that is inside of the user control For example if I have a text box inside the user control and want to set the text property through code or get the text property, How can I reference the control inside the user control. I have tried a few different things but nothing seems to work when I type the usercontrolname.control.property I just get an error.

Enums Via Markup In .NET?

Oct 4, 2011

I have an enum and a usercontrol, both in the same assembly (a plain .NET 4 web site). In the Constants class:public Enum CrudOperations Add Edit Delete. This controls the columns in a GridView on a UserControl via a property on the UserControl

[Code]...

In C#, I've specified the columns to show with markup as Mode="Edit,Delete", but in VB.NET, this does nothing. The only way I can get anything to show is with the codebehind, but if on the containing page I use userGrid.Mode = CrudOperations.Edit And CrudOperations.Delete, I get all the columns (there's also a delete column), but userGrid.Mode = CrudOperations.Edit Or CrudOperations.Delete shows nothing.

Get The PDF Markup Along With The Text?

Mar 15, 2012

I am writing an application that has to read and interpret data stored in some PDF files. The reading part is done but I am only able to get a dump of all the words on a page and not the format of the words. What I mean is that if I have to extract a table, I am getting the numbers in the table but not the markup which defines the table.Further, there is some formatting used which displays a few of these numbers within parentheses (meaning that those numbers are negative) but the parentheses themselves are not part of the text. Hence, I am not able to distinguish between positive and negative numbers present in the PDF table!

How do you get the PDF markup along with the text? Is a PDF similar in structure to an XML with tags used to markup tables etc.? If not, then, is there a resource which describes the salient features of the PDF DOM?I am using VBA and the Acrobat library (AcroExch etc.)

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