Custom Server Controls :: How To Create Custom Property (DataSource) In Custom Controls
May 15, 2010I know that how to create custom control and add custom property.
I want to create property like DataSource to my custom control.
Similar Messages:
Custom Server Controls :: Need Custom Text Box Control With DataSource,TableName,ColumnName Property?
Nov 26, 2010I need to create one custom text box control which should be bind with data base.
I am referring following link...
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.databoundcontrol.aspx
I used DataBoundControl to create my control but i am not able to do it properly.
public class SimpleTextBoxControl : DataBoundControl
{
private TextBox nameTextBox;
public string DataTextField
{
get
{
object o = ViewState["DataTextField"];
return ((o == null) ? string.Empty : (string)o);
}
set
{
ViewState["DataTextField"] = value;
}
}
[
Bindable(true),
Category("Data"),
DefaultValue(""),
Description("The text to display on the link."),
Localizable(true),
PersistenceMode(PersistenceMode.InnerDefaultProperty)
]
public virtual string DataTexValue
{
get
{
string s = (string)ViewState["Text"];
return (s == null) ? String.Empty : s;
}
set
{
ViewState["Text"] = value;
}
}
protected override void PerformDataBinding(IEnumerable retrievedData)
{
if (retrievedData == null)
return;
base.PerformDataBinding(retrievedData);
Controls.Clear();
nameTextBox = new TextBox { ID = "nameTextBox" };
foreach (object dataItem in retrievedData)
{
if (DataTextField.Length > 0)
{
nameTextBox.Text = DataBinder.GetPropertyValue(dataItem, DataTextField, null);
}
DataTexValue = nameTextBox.Text;
}
this.Controls.Add(nameTextBox);
}
}
Custom Server Controls :: Insert A Drop List Property Into A Custom Webcontrol?
Feb 18, 2010How insert a drop list property into a custom webcontrol? This a drop list property is show all textbox control on usercontrol or webpage.
View 3 RepliesCustom Server Controls :: Custom Checkbox Control 'checked' Property Is Not Working?
Sep 3, 2010Iam developing a custom checkbox control deriving from the 'compositecontrol' which i need to use it for a composite control purpose.
public
class
TngCheckBox :
CompositeControl
{
i have written the required properties which are working fine except the "checked" property. here is my code for 'checked' property. i tried both the below ways (commented one and not commneted) . the problem is the 'checked' value is not setting the value at the get set part of the property.its assigning the value at the design time , but when i check and uncheck its not updating the property value.which is resulting me wrong .
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Custom Server Controls :: Custom Checkbox Control 'checked' Property Is Not Working ?
Oct 15, 2010Iam developing a custom checkbox control deriving from the 'compositecontrol' which i need to use it for a composite control purpose.
public
class
TngCheckBox :
CompositeControl
{
i have written the required properties which are working fine except the "checked" property. here is my code for 'checked' property. i tried both the below ways (commented one and not commneted) . the problem is the 'checked' value is not setting the value at the get set part of the property.its assigning the value at the design time , but when i check and uncheck its not updating the property value.which is resulting me wrong .
[Code]....
Custom Server Controls :: List Property Of A Custom Control Is Not Persisted?
Mar 15, 2010I have a custom control, inherited from Button. This is the class definition for the control and 2 properties:
[Code]....
I show you 2 properties, only to illustrate the problem.
as you see Aplicacion property is of a custom type Sistema, and Roles property is of type List<UserRol>.
The Aplicacion property is rendered well, this way:
[Code]....
The problem I have is with List<UserRol>. I couldn't get it to be rendered. I expeect to be rendered this way:
[Code]....
Finally, this is the TypeConverter and Editor definitions for the list:
[Code]....
The UserRol class is a typical class, without any special attributes.
I have discovered that when I use the custom editor for Roles property, the collection is not persisted. When I use the default editor for the collection, the collection is persisted.
Custom Server Controls :: How To Custom Controls Derived From Existing Controls - Overriding Default Property Values
Nov 15, 2010I have some (probably very basic) questions about developing custom controls. I am wanting to derive a set of button controls, and the first one I have started on is a "DeleteButton", that has a additional property (DeleteConfirmationText) that is built into the OnClientClick attribute. To get that added, I overrode the Render method as follows:
[Code]....
This all works well. Now, I will add some logic to make sure that there is some text in the DeleteConfirmationText property, but that isn't the intent of my question.
What I am also wanting to do is to override some of the default property values, so I added that to the default constructor:
[Code]....
Now, in the designer in VS2008, and I look at the properties for the control, there isn't a default value shown in the "Properties" section, and the Causesvalidation still shows the underlying classes default value of "True". As well, in design mode, where the GridView control that containse my DeleteButton control would be displayed, there is an error box "There was an error rendering the control. 'Are you certain you want to delete this attorney?' cound not be set on property 'DeleteConfirmationText'. Here's the markup where I am defining the deletebutton control:
[Code]....
What am I doing wrong?
Custom Server Controls :: How To Add A Dropdownlist Of Available Values For A Custom Server Control Property
Sep 13, 2010How would I add a (dropdown) list of available values for a custom server control property?
(Just like 'Visible' property of most controls has valid values of 'True/False' and nothing else can be entered or selected)
Custom Server Controls :: Create A Custom Control From Currently Have Within A Modal Popup?
Feb 24, 2011I have currently on multiple pages a modal popup that displays the information below, we are getting to the point where we need to call this popup from multiple locations, currently i have duplicate setups on each page that i want to use it on, but its becoming a mess to manage when a change is needed.. so im looking to see if what i have within the modal popup can be turned into a control that i can call anywhere thru out the site and have just 1 setup to maintain going forward..If its possible to create a control that can then be placed within the modal popup and server the same purpose that would be great any links here is what i have within the modal popup that i have on atleast 3 pages currently..
[Code]....
Custom Server Controls :: How To Create A Custom Toolbox
Oct 26, 2010I want to create a custom Toolbox in asp.net which will contain all custom control that i have made. Now the user will drag these controls from custom toolbox at run time and create form. I tried but did not succeeded.
View 1 RepliesCustom Server Controls :: Create A Web Custom Control?
Feb 15, 2010I am trying to create a web custom control but I am unable to find the templete that should be in my projects window. I am using Visual Studio Pro and it should be there. Doc's say standard version doesn't have it but thats all I can find.
View 4 RepliesCustom Server Controls :: Custom Tag Not Found For Control / Error: Unknown Server Tag 'custom:AjaxValidator'
Jan 3, 2011Hope this is the correct forum for this question. I am using VWD 2010 an have a web project and get the following error upon execution:
Parser Error Message: Unknown server tag 'custom:AjaxValidator'.
My code is as follows in the .cs file:
[Code]....
[Code]....
Custom Server Controls :: Custom Composite Control With Custom Templated Child Controls?
Mar 22, 2011I am trying to build a custom composite control, which allows me to add custom content to each child control. It's a similar concept to what you have with a GridView and TemplateColumn. The markup used to place the control on the page would end up being something like this:
[Code]....
I have the code below, which allows me to put that markup on the page without throwing any errors, and it renders all the correct HTML, except it doesn't render the contents of the ColumnTemplate. I have replaced the Render() code with a comment because it's quite long winded and doesn't add anything important here:
[Code]....
I have tried to follow examples on MSDN and other forums but I can't make this work. I think I'm missing the code to render the contents of the template, but I don't know how to hook that up.
Custom Server Controls :: TemplateField [TextBox] Binded To DataSource (Custom Server Control)?
Jul 28, 2010Case : a templatefield Text Box created by class TemplateHandler and added to the composite
control Grid .how to bind it to the DataSource Object of the Grid Class ?
To Create A Custom Control That Adds Other Controls Visible To The Page Hosting My Custom ?
Oct 22, 2010I want to create a custom control where I define several specifically named DIV sections. The code-behind logic of the custom control will perform operations on these named DIV sections. The page where the custom control is hosted needs to be able to add named controls to the DIV sections and perform operations on these named controls added to the DIV sections.
Let me explain a little further. In the custom control, I want to have code behind logic that fires the following Page Event and uses a condition to make one or another specifically named DIV section visible or not:
< _
ToolboxData("<{0}:BaseDetails runat=""server""></{0}:BaseDetails>") _
> _
Public Class BaseDetails
[code]...
how can I create a custom control which is able to generate the named DIV sections "DetailsNameDiv1" and "DetailsNameDiv2" where my custom control can check a condition and make one or the other visible. Also, I need to be able to add controls to these named DIV sections when I host the custom control and the control that I add to the named DIV section needs to let me set values of these controls from the code behind logic of the page (or usercontrol) where the custom control is being hosted (in my example, I am adding TextBox controls that I want to set the Text property from a SQL Data Reader).
Add Custom Property To Custom Server Control?
Jan 11, 2011I have created an asp.net custom control and now want to pass some values to it from the page which will use the control.Is there any way i can add my own property to the control (like Text property is present for a Label control)?
View 4 RepliesCustom Server Controls :: Create Web Custom Controls?
Jun 24, 2010through baby steps of how to create Web Custom Controls in VS2008. I cannot find Web Control Library template in New Project?
View 1 RepliesCustom Server Controls :: Create Useful Custom Controls?
Dec 22, 2010I am going to create some custom controls to use them in different projects. Therefore I found some helpful content on microsoft's support sites. These again dealt with overriding the html-render-method, but I am still wondering if this is the most elegant way, because in my opinion this just means outsourcing of some code from the view to the class file.Do I misunderstand the way of how custom controls should be used?
View 2 RepliesCustom Server Controls :: Custom Radio Button Loses State After Postback?
Mar 24, 2010I have a custom radiobutton and it renders fine but loses state after postback.
How can it be modified?
[Code]....
Custom Server Controls :: Custom Validator Client-side Validation Cannot Work?
Jan 13, 2010I've been trying to get a custom validator component working that ensures at least one checkbox from a checkboxlist has been checked. I've been used some code I found on dotnetjunkies.com but the client-side validation didn't work. I've been attempting to modify it to get the client-side javascript validation to work with no luck. Basically, I compile the below code into a DLL and add it to my bin folder.
[Code]....
Custom Server Controls :: Custom Control's Children Do Not Persist Contents After Postback
Feb 25, 2011I have created a really simple custom control to render panels into a page. The code is below. When I use my control and add any webcontrol to it, after each page postback the contents of these child controls vanishes.
I must have missed something really simple but run the example to reproduce this. Can anyone please enlighten me as to why the controls are being 'emptied' of their contents, and how I stop this occuring?
Here is the code for the control
[Code]....
And here's how I am using it in a sample page:
[Code]....
[Code]....
Custom Server Controls :: Implementing An Interface From A Class Library In A Custom Control?
Jul 8, 2010I'm building an n-tier application, with the web client and the class library separate. I'm also using the factory pattern of development, using interfaces to act as containers for different objects they are associated with. The problem I'm expreriencing is that I declared a public interface class in the class library and I can create an instance of it in in my aspx pages but whenever I declare it in my custom control code-side, i get an error, like so:
Error 20 The type or namespace name 'IContentMaker' could not be found (are you missing a using directive or an assembly reference?)
notge that I have inherited the class library namespace using the 'using' keyword just in case you are wondering. My code is like so:
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using TQO_Classes ; //importing the class library project
public partial class PageContentMgr : System.Web.UI.UserControl
{
private IContentMaker _data; //this line throws the error, it works fine on aspx pages
Custom Server Controls :: Register Tagprefix For A Custom Control That Inherits Treeview?
Jun 15, 2010 I have an ASP.net web application project written in VB. Am trying to test a cobbed-together "MyTreeview" control put together from C# code that's been converted.
I think this will come "close" to what I'm trying to do - just get a treenode to have a CSS tag and render properly.
I have an App_LocalResources directory and a file called CustomTreeNode.vb. Inside that file is the following code:
[Code]....
[Code]....
[Code]....
Custom Server Controls :: Custom Control With Collapsible Panel Extender - Keep State?
Dec 31, 2010I have a Custom Server Control with a Collapsible Panel Extender. I want to be able to keep the Collapsable state (open or closed) when doing a Post Back.
Here is my Custom Control's ASP code:
[Code]....
Custom Server Controls :: Why Custom Control Write Data Only One Time
Dec 26, 2010I have built a custom control. when i add this custom control in my page twice or more then the it write only one time of its render contest data.
View 4 Replies