Reusable Content Control – Sharepoint 2013 MasterPage

Although the Reusable Content list works well for adding content to content placeholders in a publishing page, there are times when I want to use it to store reusable content that should show up in my master page or in page layouts. For instance, I’d like the copyright message that appears in the footer to be maintained by content owners, so that each time a new year rolls by, they can update the date in the footer without needing to get a developer involved to update the master page.

This is a control I’ve developed that retrieves a particular item from the Reusable Content list by the item’s title, and displays it. It retrieves the item by a simple CAML query.

using System;
using System.Web.UI.WebControls;
using Microsoft.SharePoint;

namespace BB.SP2010.WebControls
{
public class ReusableContentControl : WebControl
{
private string reusableContentListItemTitle;

      public string ReusableContentListItemTitle
{
set { reusableContentListItemTitle = value; }
}

      protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
{
SPWeb rootWeb = SPContext.Current.Site.RootWeb;
SPList reusableContentList = rootWeb.Lists[“Reusable Content”];

         SPQuery query = new SPQuery();
query.Query = String.Format(“<Where><Eq><FieldRef Name=’Title’/><Value Type=’Text’>{0}</Value></Eq></Where>”,
reusableContentListItemTitle);
SPListItemCollection listItems = reusableContentList.GetItems(query);
if (listItems.Count > 0)
{
SPListItem listItem = listItems[0];

            Literal reusableContent = new Literal();
reusableContent.Text = listItem[“Reusable HTML”].ToString();
this.Controls.Add(reusableContent);
}

         base.RenderChildren(writer);
}
}
}

To use this control, first add a reference to the assmebly in your page, like this:

<%@ Register Tagprefix=”CustomWebControls” Namespace=”BB.SP2010.WebControls” Assembly=”BB.SP2010.WebControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=2f91cfdda5cd365b” %>

Next, add the control to your page, passing in the title of the Reusable List list item you want to render to the page:

<CustomWebControls:ReusableContentControl runat=”server” ID=”copyrightControl” ReusableContentListItemTitle=”Copyright”/>

I’m not caching the results because, if you have caching turned on on your Publishing site, the CAML query itself should be cached.

Ref : savtechsol

CAML QUERY IN SHAREPOINT 2013 (Examples)

Collaborative Application Markup Language (CAML) is an XML-based language that is used in Microsoft SharePoint Foundation to define the fields and views that are used in sites and lists.

We can use queries to get data from SharePoint lists with filtering. As a best practice, it is recommended to filter data for large lists to improve performance.

Following can be various samples when we use CAML queries.

1)   CAML query with simple filtering

SPQuery oquery = newSPQuery();

oquery.Query = “<Where><Eq><FieldRef Name=’Child_x0020_Type’ /><Value Type=’Text’>” + childType.ToString().Trim() + “</Value></Eq></Where>”;

2)      CAML query with SORTING (OrderBy)

SPQuery oquery = newSPQuery();

oquery.Query = “<Where><Eq><FieldRef Name=’Article_ID’ /><Value Type=’Text’>” + articleID.ToString().Trim() + “</Value></Eq></Where><OrderBy><FieldRef Name =\”Modified\” Ascending=\”FALSE\”/></OrderBy>”;

SPListItemCollection col = lstTestArticles.GetItems(oquery);

3)      CAML query with few conditions (AND, AND)

SPQuery oquery = newSPQuery();

oquery.Query = “<Where><And><And><Eq><FieldRef Name=’Child_x0020_Type’ /><Value Type=’Text’>” + childType.ToString().Trim() + “</Value></Eq>” +

“<Eq><FieldRef Name=’Parent_x0020_Type’ /><Value Type=’Text’>” + parentType + “</Value></Eq></And>” + “<Eq><FieldRef Name=’Article_x0020_Type’ /><Value Type=’Text’>” + articleType.ToString().Trim() + “</Value></Eq>” +

“</And></Where><OrderBy><FieldRef Name =’Title’ Ascending=’TRUE’/></OrderBy>”;

4)      CAML query with DATETIME

SPQuery oquery = newSPQuery();

query.Query = “<Where><And><Geq><FieldRef Name=’Modified’ /><Value Type=’DateTime’ IncludeTimeValue=’TRUE’>” + SPUtility.CreateISO8601DateTimeFromSystemDateTime(dtStartTime.SelectedDate) + “</Value></Geq>” +

“<Leq><FieldRef Name=’Modified’ /><Value Type=’DateTime’ IncludeTimeValue=’TRUE’>” +

SPUtility.CreateISO8601DateTimeFromSystemDateTime(dtendTime.SelectedDate) + “</Value></Leq></And></Where>”;

5)      CAML query with USER

SPQuery oquery = newSPQuery();

query.Query = “<Where><And><And><Geq><FieldRef Name=’Modified’ /><Value Type=’DateTime’ IncludeTimeValue=’TRUE’>” + SPUtility.CreateISO8601DateTimeFromSystemDateTime(dtStartTime.SelectedDate) + “</Value></Geq>” +

“<Leq><FieldRef Name=’Modified’ /><Value Type=’DateTime’ IncludeTimeValue=’TRUE’>” +                       SPUtility.CreateISO8601DateTimeFromSystemDateTime(dtendTime.SelectedDate) + “</Value></Leq></And><Eq><FieldRef Name=’Editor’ LookupId=’TRUE’ /><Value Type=’User’>” + myuser.ID + “</Value></Eq></And></Where>”;

6)      CAML query with Integer

SPQuery oquery = newSPQuery();

oquery.Query = “<Where><And><Eq><FieldRef Name=’Article_x0020_Type’ /><Value Type=’Text’>” + articleCategory.ToString().Trim() + “</Value></Eq>” +

“<Eq><FieldRef Name=’Status’ /><Value Type=’Integer’>” + 1 + “</Value></Eq>” +

“</And></Where>”;

SPListItemCollection oCol = TestArticle.GetItems(oquery);

7)      CAML Query to get documents

SPWeb oWeb = SPContext.Current.Web;

SPList olist = oWeb.Lists[Constants.TESTProcessRootFolderName()];

SPView oView = olist.Views[“All Documents”];

SPQuery oQuery = newSPQuery(oView);

oQuery.RowLimit = 22;

oQuery.ViewAttributes = “Scope=\”Recursive\””;

oQuery.Query = “<Where><Contains><FieldRef Name=’Title’ /><Value Type=’Text’>” + relatedID.ToString(“00″) + “-” + “</Value></Contains></Where><OrderBy><FieldRef Name =\”Modified\” Ascending=\”FALSE\”/></OrderBy>”;

SPListItemCollection collListItemsAvailable = olist.GetItems(oQuery);

return collListItemsAvailable;