C# Class Nettiers.AdventureWorks.Web.UI.EntityDropDownList

A specialised Drop Down List that adds extra functionality to the base class. Features include the ability to add a null item, make the control readonly, make the control required and it supports type ahead

Inheritance: System.Web.UI.WebControls.DropDownList

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Private Properties

Property	Type	Description

Public Methods

Method	Description
EntityDropDownList ( ) : System	Initializes a new instance of the T:EntityDropDownList class.
Validate ( ) : void	Calls the validate method on the embedded required validator if permitted

Protected Methods

Method	Description
CreateChildControls ( ) : void	Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.
CreateControlCollection ( ) : System.Web.UI.ControlCollection	The base DropDownList class doesn't allow a child control collection. We'll override it so that we can have one for the validator.
OnDataBinding ( EventArgs e ) : void	Raises the event.
OnInit ( EventArgs e ) : void	Raises the event.
OnLoad ( EventArgs e ) : void	Handles the event.
Render ( System.Web.UI.HtmlTextWriter writer ) : void	Renders the control to the specified HTML writer.
RenderDropDownList ( System.Web.UI.HtmlTextWriter writer ) : void	Renders the drop down list.
RenderRequiredValidator ( System.Web.UI.HtmlTextWriter writer ) : void	Renders the required validator.

Method Details

CreateChildControls() protected method

Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.

protected CreateChildControls ( ) : void
return	void

CreateControlCollection() protected method

The base DropDownList class doesn't allow a child control collection. We'll override it so that we can have one for the validator.

protected CreateControlCollection ( ) : System.Web.UI.ControlCollection
return	System.Web.UI.ControlCollection

EntityDropDownList() public method

Initializes a new instance of the T:EntityDropDownList class.

public EntityDropDownList ( ) : System
return	System

OnDataBinding() protected method

Raises the event.

protected OnDataBinding ( EventArgs e ) : void
e	System.EventArgs	An object that contains the event data.
return	void

OnInit() protected method

Raises the event.

protected OnInit ( EventArgs e ) : void
e	System.EventArgs	An object that contains the event data.
return	void

OnLoad() protected method

Handles the event.

protected OnLoad ( EventArgs e ) : void
e	System.EventArgs	An object that contains event data.
return	void

Render() protected method

Renders the control to the specified HTML writer.

protected Render ( System.Web.UI.HtmlTextWriter writer ) : void
writer	System.Web.UI.HtmlTextWriter	The object that receives the control content.
return	void

RenderDropDownList() protected method

Renders the drop down list.

protected RenderDropDownList ( System.Web.UI.HtmlTextWriter writer ) : void
writer	System.Web.UI.HtmlTextWriter	The writer.
return	void

RenderRequiredValidator() protected method

Renders the required validator.

protected RenderRequiredValidator ( System.Web.UI.HtmlTextWriter writer ) : void
writer	System.Web.UI.HtmlTextWriter	The writer.
return	void

Validate() public method

Calls the validate method on the embedded required validator if permitted

public Validate ( ) : void
return	void