.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Server Control Property With Multiple Options

Posted By:      Posted Date: October 06, 2010    Points: 0   Category :ASP.Net

I have a custom server control built. It works great. I want to expose a property so that in designer the developer can put a check which options they want enabled for that property. For example, it is a grid that has Edit, Update, Delete, Undelete displayed on each row.

I want to have a property called AvailableRowCommands (or something like that) so the developer clicks down, puts a check next to each one they want and they're done. So they coudl check just edit and update and not delete.

Would I use sub properties for this?

Thanks for your help!

View Complete Post

More Related Resource Links

Custom Server Control Property not maintaining state


I have created a server control consisting of a TextArea and a div under it.  My goal is to create my own asp:TextArea type control.  the div is for a Character count of the text area and seems to work ok but i added a CharacterCountVisible property to the control that is always returning true.  See Proptery definition below


<Bindable(False), Category("Appearance"), DefaultValue("True"), Localizable(True)> Property CharacterCountVisible() As Boolean
        Return _CountBoxVisible
    End Get
    Set(ByVal value As Boolean)
        _CountBoxVisible = value
    End Set
End Property

Note the _CountBoxVisible variable is define inside the class as :

Dim _CountBoxVisible as Boolean = True

What I am trying to do is give the user/coder the option to show/utilize the char count feature.  Can make it disappear with textarea1.CharacterCountVisible = False but setting it to true will not make it display.


What am i missing





GridView Multiple Filter AJAX Control

This AJAX control enables the user to filter data within any column inside a GridView. The user can add multiple filters and can delete existing ones too.

Sorting Data in a GridView Web Server Control

The GridView control provides built-in sorting functionality without requiring any coding. You can further customize the sort functionality of the GridView control by using custom SortExpression property values for columns as well as by using the Sorting and Sorted events

Server side validation of Fileupload control not working



I've tried this method in my code behind to try and validate that the Fileupload control has a file or not. I get the error message the the event "Server Validate" cannot be found. Can anyone tell why? Thanks.

Public Sub CustomValidator1_ServerValidate(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs) Handles CustomValidator1.ServerValidate

' Get file name

        Dim uploadAvatar As FileUpload = DirectCast(AdvertisementForm.FindControl("uploadAvatar"), FileUpload)

        Dim UploadFileName As String = uploadAvatar.PostedFile.FileName

        If UploadFileName = "" Then
            ' There is no file selected
            args.IsValid = False
            Dim Extension As String = UploadFileName.Substring(UploadFileName.L

Multiple Instances of User Control


I have a user control that I place on a page severl times.  When I make a selection on a ddl in one one control the SelectedIndexChanged event fires for all the control on the page for that ddl.  So I get duplication of an insert that I do.  Is there a way to make sure these events are isolated so this doesn't happen.


video tutorial link for composite and rendered custom server control


hii all

i am new to technology so go easy on this post

according to what i read from web there are 3 type of custom server controls

1 superclass

2 composite

3 rendered

i found video tutorial for superclass custom server control but couldnt find video tutials for other 2.

please forward me link for composite and rendered custom server controls video tutorial  

require Video tutorial for Composite server control and rendered server control


hi guys

i am new to forum and technology so please go easy

according to what i read from web there 3 types of custom server controls

1. composite



i found video tutorial to create and use superclass custom control in your project (extending dropdown control functionality)

i am trying to search video tutorial for other 2 types .please help me.

image inside custom server control



I want to use an image inside a Custom Web server control ! 

Do I need to use Web.resources ? if so , how to do ?

Category attribute of user control property does not work correctly in categories tab.



I have a User Control (ascx) and a property which a want to display in my categories tab in Visual Studio in the category named "Styles".

[Category("Styles"), DefaultValue(""), Description("The value for formating something.")]
public String MyFormatProperty
set { /* the code for set */; }
get { /* the code for get */; }

And here is the problem: Actually I do not need a get, because I only have to set the property (write only property). But when I omit the get, the property is displayed in the "Misc" category in the categories tab in Visual Studio. Only when I code the get as well, then the property is displayed correctly in the "Styles" category in the categories tab in Visual Studio.

Does anybody know why? How can I display the category correctly only with set?

Thanks, S.

Team System: Team Foundation Server Version Control


In this new column, Brian Randell begins his long look at how to extend and enhance Visual Studio Team System.

Brian A. Randell

MSDN Magazine January 2007

User Control and DataSourceID Property


I created a user control (.ascx) that contains a paging-user-control, a repeater and some other controls.
I want to use the property DataSourceID. How should I get the data from the datasource and when?
What is the recommended way?

I did it this way:
- Create a method to get the data by reflection, like:

private void PerformSelect()
	if (!String.IsNullOrEmpty(this.DataSourceID))
		Control control = Page.FindControl(this.DataSourceID);
		if (control == null)
			control = Parent.FindControl(this.DataSourceID);

		MethodInfo method = control.GetType().GetMethod("Select");
		IEnumerable data = (IEnumerable)method.Invoke(control, new object[0]);

		this.DataSource = data;
 - Call this method
In PageLoad when no postback
Changing the current page (paging-user-control)
Changing the current tab (tab-user-control)
Switching Visibility to true

I think that way is not the optimum, is there any better way?
Do you have any suggestions or links?

Thanks for your help, Andreas

User Control as Composite Control Property


I have a composite control (Called Dialog) which has a property "ContentControl"

At design time, I'd like this property to bind to a user control that is on the page.

When I add the items in the designer, the designer loads as expected.

However, when I try to run the web page, I get the following error:

Parser Error Message: Cannot create an object of type 'System.Web.UI.UserControl' from its string representation 'EditTerm1' for the 'ContentControl' property.

Please let me know if there is another way to bind a user control as a property of a composite control.


Designer Code:


	<cc1:Dialog ID="Dialog1" runat="server" Buttons="SaveCancel" 
Title="Edit Term" ContentControl="EditTerm1" />

set an asp control property value with a label value


hi.. please help me on this

i have a control to upload multiple files on server. now i want to set the control's "upload folder"  property with a dynamic value which is different for each user..

<cc1:FileUploader ID="FileUploader1" runat="server">

                    <cc1:FileSaverAdapter FolderName= "FOLDERNAME" />


here i want this 'FolderName' value to be replaced with some label value. how can i do this ?

Thanks in advance .. :)

Search Customization and Development Options in SharePoint Server 2007

Examine the powerful platform of SharePoint Server 2007 search for the end user and developer. Learn about the built-in Web Parts for search and writing search queries for your applications.

AssemblyInfo file not present in ASP.NET Server Control Project



I have created my first Custom asp.net server control.But i think such projects probably contains AssemblyInfo file.But i am missing that. When i created project that file was not added.

I am working on VS 2008 Team System Edition,with VB.NET language.How to get that file ? 

Problem in Custom Control Unable to find Control To Validate Property


I make a custome control by taking a TextBox and A Regular Expression Validator.When i Use this on a .aspx page it works fine.But when i use this on .ascx page and dynamically load user control on a place holder in .aspx page it through an Error

Unable to find control id '_ctl0:txtEmail' referenced by the 'ControlToValidate' property of '_ctl0:txtEmailRequired'


My Custome control Code is this"--

public class EmailValidator:System.Web.UI.Control, INamingContainer{

private System.Web.UI.WebControls.TextBox textBox;

private System.Web.UI.WebControls.RegularExpressionValidator regularExpressionValidator;

public EmailValidator(){

textBox = new TextBox();

regularExpressionValidator = new RegularExpressionValidator();

IsErrorTextBelow = true;

IsRequired = false;

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend