Developing Web Parts and Controls
Web Parts are like user controls provide
facility to users to directly modify the content, appearance, and behavior of
SharePoint site pages by using a browser. These are server-side controls that
run inside a special type of page called a Web Part Page. These are the building
blocks of pages that appear on a SharePoint site.
When we add a Web Part item, Visual Studio
creates a folder in our project. Several files are added to those folders.
Following are default files and their description:
|
File Name |
Description |
| Code File |
It contains methods which
are used for the Web Part to generate custom content. |
| Elements.xml |
It
contains information that is used by the Feature definition file in the
project to deploy the Web Part.
|
| .webpart file |
It provides information
that SharePoint needs to display on Web Part in a Web Part gallery. |
Creating a Basic Web Part
It is a simple Web Part that enables the user to define a custom message
that is displayed inside the Web Part. This Web Part derives from the Microsoft
ASP.NET Web Part class.
Go to visual studio 2010 create new SharePoint Project then add a WebPart.
Put Its name ShowMessage.
Create the Web Part property
1. In the ShowMessage file, copy and paste the following code to create a basic
customizable property.
private
string sMessage =
"Hello, Folks!";
public string
ShowMessage
{
get
{ return sMessage; }
set
{ sMessage = value; }
}
2. Add the following tags above the public declaration.
[WebBrowsable(true),
WebDescription("It
Displays a Message),
WebDisplayName("Its
Display Message"),
Personalizable(PersonalizationScope.User)]
3. Now, add functionality to Web Part. By overriding the CreateChildControls
method.
protected
override void
CreateChildControls()
{
base.CreateChildControls();
LiteralControl
message = new
LiteralControl();
message.Text =
ShowMessage;
Controls.Add(message);
}
Now, Build the project and finally deploy it. After deploying the webPart
Project you can add to your SharePoint Web Page.