Using SPSite and SPWeb Objects in SharePoint

SPSite is the most fundamental object of the SharePoint Object Model,SPSite object can be created using the overloaded constructors or it can be referenced by using unique ID GUID, or with URL

Overloaded methods

SPSite(Guid id)

SPSite(string requestUrl)

SPSite(Guid id, SPUrlZone zone)

SPSite(Guid id, SPUserToken userToken)

SPSite(string requestUrl, SPUserToken userToken)

SPSite(Guid id, SPUrlZone zone, SPUserToken userToken)

SPSite is the only through which we can access the SPWeb  because SPWeb does not have a constructor, There are way with which we can get the instance of SPWeb is through using “SPControl” and “SPContext”

Some of the important members of SPWeb are

1.       Users

2.       Title

3.       Update

4.       Delete

5.       ContentTypes

6.       AllUnsafeUpdates

7.       List

8.       ID

9.       GetSiteData

And so on.

Sample code shows how to access the SPWeb using SPSite and display the title of the site collection and update the specific  Subsite Tilte

namespace SampleDemo

{

    [ToolboxItemAttribute(false)]

    public class Sample : WebPart

    {

protected override void CreateChildControls()

        {

        }

       protected override void RenderContent(HtmlTextWriter writer)

        {

SPSite mySiteCollection=null;

SPWeb mySPweb=null;

              Try

{

//Get the SPSite by passing the url

mySiteCollection = new SPSite("http://demoSite /")

Writer.Write(“I am in Site Collection”);

//print /display the current site collection title

Writer.Write ("My Current Site  Exist here: ", mySiteCollection.Url);

mySPweb = mySiteCollection.OpenWeb("MySubSite")

//Update the subsite title

                                mySPweb.Title = mySPweb.Title + " Hey I have changed the Title";

mySPweb.Update();

}

Catch(SPExecption exception)

{

Throw exception

}

Finally

{

mySiteCollection.Dispose();

mySPweb.Dispose();

}

        }

     }

}