Convert Html control to string

eg: In server side, through coding, we have created a HTMLAnchor. Adding this to a Label's text requires in string format.
 
private static string GetControlsAsString(Control ulControl)
{
 string contents = null;
 using (System.IO.StringWriter swriter = new System.IO.StringWriter())
 {
 HtmlTextWriter writer = new HtmlTextWriter(swriter);
 ulControl.RenderControl(writer);
 contents = swriter.ToString();
 }
 return contents;
}

Gets thumbnail, full, large size url images from a sharepoint picture library

///Provides the url to a picture provided the picture library list item.
private static string GetPictureUrl(SPListItem listItem, ImageSize imageSize)
{
 StringBuilder url = new StringBuilder();

 // Build the url up until the final portion
 url.Append(SPEncode.UrlEncodeAsUrl(listItem.Web.Url));
 url.Append('/');
 url.Append(SPEncode.UrlEncodeAsUrl(listItem.ParentList.RootFolder.Url));
 url.Append('/');

 // Determine the final portion based on the requested image size
 string filename = listItem.File.Name;

  if (imageSize == ImageSize.Full)
 {
   url.Append(SPEncode.UrlEncodeAsUrl(filename));
 }
 else
 {
 string basefilename = Path.GetFileNameWithoutExtension(filename);
 string extension = Path.GetExtension(filename);
 string dir = (imageSize == ImageSize.Thumbnail) ? "_t/" : "_w/";  url.Append(dir);
 url.Append(SPEncode.UrlEncodeAsUrl(basefilename));
 url.Append(SPEncode.UrlEncodeAsUrl(extension).Replace('.', '_'));
 url.Append(".jpg");
 }
return url.ToString();
}

 // Enum
public enum ImageSize
{
 Thumbnail,
 Full,
 Large
}

Configure Advance Search to limit to a scope

I have read many articles to configure Advance Search webpart, but i want to search those items from a particular list, document library, site etc.,
I have faced many hurdles in limiting to those scopes, so i want to post this as other developers or admins can easily refer this and implement on their own.

To provide the end user with advance search, 3 steps need to be followed.

Step 1: Create Scopes

Go to 'Central Administration' → Shares Service Provider(SSP) → 'Search Settings' under search → 'View Scopes' under 'Scopes'.

Click on 'New Scope'.

Provide Title, Description. Click on ok.

Next step is to create rules.

Click on newly created scope → New Rule → provide 'Scope Rule Type'.

Eg.,

1. If to limit to a sharepont list, type the url of the list:

http://Site/subsite/listName

2. If to limit to a Site:

http://site/subsite/subsite2

Click on Ok!!

Step 2: Create Display groups

Type the following url:

http://Site/subsite/_layouts/viewscopes.aspx?mode=site

It will be displaying the existing scopes and 'Display groups'.

Based on requirement, create a new display group or edit the existing one.

Click on 'New Display group', type the Title, Description, scopes to be included, and the default scope.

Click on Ok.

Step 3: Add Webpart

On any custom page, Add out-of-the-box webpart 'Advance Search Box' under 'Search' category.

Go to webpart properties:

I. Under 'Scopes' section, provide the 'Display group' name.

2. Under 'Miscellaneous' section, provide the url to redirect the page on click of 'Search' button.
   
   
   
   
   
   Click on ok!!
   
   
   The provided url will be a custom .aspx page which has the Out-Of-the-box webpart 'Search Core Results'. No need to do any settings for this page.
   
   
   
   
   
   Done.
   
   
   References:
   http://blogs.msdn.com/b/uksharepoint/archive/2009/05/08/sharepoint-search-how-to-create-a-fully-functioning-search-center-part-1.aspx
   
   
   
   
   
   
   
   
   
   

Remove elements from a XML file

private static XDocument GetFilteredData(XDocument resultXML)

{

 //Remove elements of xpath item/title
 //that doesn't contains the title value as 'genome'

 resultXML.Descendants("item").Descendants("title").Where(x => !(x.Value.ToLower().Contains("genome"))).Select(tit => tit.Parent).Remove();

 return resultXML;

}

Merge XML files as one

private static XDocument MergeXMLDocs()

{

 XDocument resultXML = new XDocument();

 resultXML = XDocument.Load("RSSLink(XML data)");

 IEnumerable<XElement> newElements = XDocument.Load("New RSS Link(XML data)").Root.Elements();

 resultXML.Root.Add(newElements);

 return resultXML;

}

Add List Item in SharePoint

SPSecurity.RunWithElevatedPrivileges(delegate()

{

 using (SPSite site = new SPSite("http://mySite:4444/site1"))

 {

  using (SPWeb web = site.OpenWeb())

  {

   web.AllowUnsafeUpdates = true;

   SPList list = web.Lists.TryGetList("Tasks");

   if (list != null)

   {

    //Creates the structure

    SPListItem newListItem = list.Items.Add();

    //Check whether the column is in sharepoint list.

    if(newListItem.Fields.ContainsField("Title"))

     newListItem["Title"] = "Aditya";

    
    if (newListItem.Fields.ContainsField("Last Name"))

     newListItem["Last Name"] = "Reddy";

    if (newListItem.Fields.ContainsField("Employee ID"))

     newListItem["Employee ID"] = "34";

    //Updates the changes in content database

    newListItem.Update();

   }

  web.AllowUnsafeUpdates = false;

  }

 }

});

Convert Excel sheet to DataTable

 /// <summary>

/// Gets the DataTable

/// </summary>

/// <param name="excelExtension">file extension. either xls or xlsx</param>

/// <param name="excelFilePath">Excel file path</param>

/// <param name="sheetName">Name of the sheet</param>

/// <returns>DataTable</returns>

private static DataTable GetExcelDataTable(string excelExtension, string excelFilePath, string sheetName)

{

DataTable dt = new DataTable();

try

{

string query = String.Format("select * from [{0}$]", sheetName);

string connectionString = string.Empty;

if (excelExtension.ToLower().Trim() == "xls")

connectionString = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 8.0""", excelFilePath);

if (excelExtension.ToLower().Trim() == "xlsx")

connectionString = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 12.0 Xml""", excelFilePath);

using (OleDbDataAdapter dataAdapter = new OleDbDataAdapter(query, connectionString))

{

dataAdapter.Fill(dt);

}

}

catch (Exception ex)

{

throw new Exception(ex.Message);

}

return dt;

}

If you get the following error :

The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.

Install 'AccessDatabaseEngine.exe for 32-bit or '_x64' for 64-bit OS from
http://www.microsoft.com/en-us/download/details.aspx?id=13255