SharePoint 2010 Extension methods
What is extension methods?
Extension methods:- Extension methods enable you to "add" methods to
existing types without creating a new derived type, recompiling, or otherwise
modifying the original type. Extension methods are a special kind of static
method, but they are called as if they were instance methods on the extended
type. For client code written in C# and Visual Basic, there is no apparent
difference between calling an extension method and the methods that are
actually defined in a type.
The most common extension
methods are the LINQ standard query operators that add query functionality
to the existing types.
SharePoint 2010 Extension : I am going to Share you some useful SharePoint 2010 Extension
method. All of them very useful. It will help you and solve your problems.
Following the list of the useful
extension functions are
- InUserGroup
- IsUserExist
- IsListExist
- GetFieldTitle
- GetFieldValueUserLogin
- SetFieldValueUser
And may more extension
methods.
Following the sample code to see the more extension methods download the full code.
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using Microsoft.SharePoint;
namespace SharePoint2010Extension
{
public partial
class SPExtension
: Form
{
public
SPExtension()
{
InitializeComponent();
}
string
_CurrentUser = @"HOME\Administrator";
private
void ExtensionTest_Click(object sender, EventArgs
e)
{
string
siteUrl = "http://localhost/";
using
(SPWeb _web = new
SPSite(siteUrl).OpenWeb())
{
//GetListFieldNameWithDisplayName(_web,
true);
SetUrlValueExtension(_web);
//SharePointListExist(_web);
//UserIngroup(_web);
//UserExistInSite(_web);
}
}
private
void UserExistInSite(SPWeb
_web)
{
if
(_web.IsUserExist(_CurrentUser))
{
MessageBox.Show("User exist");
}
else
{
MessageBox.Show("User not exist");
}
}
/// <summary>
/// it is for moss 2007
/// </summary>
/// <param
name="_web"></param>
public void SharePointListExist(SPWeb
_web)
{
SPList
SharepointList = _web.IsListExist("Customer");
if
(SharepointList != null)
{
MessageBox.Show("List Exist");
}
else
{
MessageBox.Show("List Not Exist");
}
}
/// <summary>
///
/// </summary>
/// <param
name="_web"></param>
public void UserIngroup(SPWeb
_web)
{
if
(lstSecurityGroup.Items.Count > 0)
{
SPUser
_UserName = _web.SiteUsers[_CurrentUser];
if
(_UserName.InUserGroup(lstSecurityGroup.SelectedItem.ToString()))
{
MessageBox.Show("User exist in group:" +
lstSecurityGroup.SelectedItem.ToString());
}
else
{
MessageBox.Show("User not exist in group:" +
lstSecurityGroup.SelectedItem.ToString());
}
}
else
{
MessageBox.Show("Please first bind the site groups in list");
}
}
/// <summary>
///
/// </summary>
/// <param
name="_web"></param>
public void GetAllGroups(SPWeb
_web)
{
lstSecurityGroup.Items.Clear();
List<string> _items = new
List<string>();
foreach
(SPGroup item in
_web.Groups)
{
_items.Add(item.Name);
}
lstSecurityGroup.DataSource =
_items;
}
private
void btnbindusers_Click(object sender, EventArgs e)
{
string
siteUrl = "http://localhost/";
using
(SPWeb _web = new
SPSite(siteUrl).OpenWeb())
{
GetAllGroups(_web);
}
}
public void GetListFieldNameWithDisplayName(SPWeb web, bool
isList)
{
SPList
SharepointList = web.IsListExist("Customer
City");
if
(isList)
{
if
(SharepointList != null)
{
//example
column Internal name "test" and display name "text col"
MessageBox.Show(SharepointList.GetFieldTitle("test"));
}
}
else
{
if
(SharepointList != null)
{
SPListItem
item = SharepointList.Items.GetItemById(1);
MessageBox.Show(item.GetFieldTitle("test"));
}
}
}
public void SetUrlValueExtension(SPWeb
web)
{
SPList
SharepointList = web.IsListExist("Links");
if
(SharepointList != null)
{
//example
column Internal name "test" and display name "text col"
SPListItem
_item = SharepointList.AddItem();
_item.SetFieldValueUrl("URL", "http://google.com",
"Google");
_item.Update();
}
}
}
}
You can download the Sample Code
to click the following folder image link.
Feel free to ask any question
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