Incremental Crawl Schedule in SharePoint 2010 Programmatically Using VS 2012

Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in SharePoint 2010.

Question: What is Incremental crawl schedule?
 

In simple terms "This type of crawl performs crawling for any specific content in the content source which has been added or updated for after a last successful crawl".

 

Step 1: Open SharePoint 2010 Central Administration and navigate to a specific site.

 

Step 2: Open up Visual Studio 2012 and try to "SharePoint Visual Web Part" project, as in:

 

 

Step 3: Select "Deploy as a farm solution" as in the following and click the "Finish" button.

 

 

Step 4: The complete code of visualwebpart1usercontrol.ascx looks like this:

 

<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>

<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register TagPrefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls"

    Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register TagPrefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register TagPrefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>

<%@ Import Namespace="Microsoft.SharePoint" %>

<%@ Register TagPrefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages"

    Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@  Control Language="C#" AutoEventWireup="true" CodeBehind="VisualWebPart1.ascx.cs"

    Inherits="IncrementalCrawlScheduleApp.VisualWebPart1.VisualWebPart1" %>

<div>

    <table style="font-family: Verdana; text-align: center;">

        <tr>

            <td colspan="2">

                <asp:label id="Label1" runat="server" text="Incremental Crawl Schedule - SharePoint 2010 via Visual Studio 2012"

                    font-bold="true" forecolor="Maroon" font-size="Large"></asp:label>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label2" runat="server" text="Please Enter Content Source Name:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox1" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label5" runat="server" text="Please Enter Begin Day:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox3" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label3" runat="server" text="Please Enter Begin Month:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox2" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label6" runat="server" text="Please Enter Begin Year:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox4" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label7" runat="server" text="Please Enter Start Hour:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox5" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label8" runat="server" text="Please Enter Start Minute:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox6" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label9" runat="server" text="Please Enter Days Interval:"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox7" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td colspan="2">

                <asp:button id="Button1" runat="server" text="Incremental Crawl Schedule" forecolor="Orange"

                    font-bold="true" backcolor="Black" onclick="Button1_Click" width="261px" />

            </td>

        </tr>

        <tr>

            <td colspan="2">

                <asp:label id="Label4" runat="server" font-bold="true"></asp:label>

            </td>

        </tr>

    </table>

</div>
 

Step 5: The complete code of visualwebpart1usercontrol.ascx.cs looks like this:
 

using Microsoft.Office.Server.Search.Administration;

using Microsoft.SharePoint;

using System;

using System.ComponentModel;

using System.Web.UI.WebControls.WebParts;namespace IncrementalCrawlScheduleApp.VisualWebPart1

{

    [ToolboxItemAttribute(false)]

    public partial class VisualWebPart1 : WebPart

    {

        // Uncomment the following SecurityPermission attribute only when doing Performance Profiling using

        // the Instrumentation method, and then remove the SecurityPermission attribute when the code is ready

        // for production. Because the SecurityPermission attribute bypasses the security check for callers of

        // your constructor, it's not recommended for production purposes.

        // [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Assert, UnmanagedCode = true)]

        public VisualWebPart1()

        {

        }

        protected override void OnInit(EventArgs e)

        {

            base.OnInit(e);InitializeControl();

        }

        protected void Page_Load(object sender, EventArgs e)

        {

            TextBox1.Focus();

        }

        protected void Button1_Click(object sender, EventArgs e)

        {

            if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text) ||string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox5.Text) || string.IsNullOrEmpty(TextBox6.Text) ||string.IsNullOrEmpty(TextBox7.Text))

            {

                Label4.Text = "Please Enter Some Values";

                Label4.ForeColor = System.Drawing.Color.Red;

            }

            else

            {

                SPSite site = new SPSite("http://win-5c3g1lanj3k:49003/");

                SearchContext objSearch = SearchContext.GetContext(site);

                DailySchedule objSchedule = new DailySchedule(objSearch);

                objSchedule.BeginDay = int.Parse(TextBox3.Text);

                objSchedule.BeginMonth = int.Parse(TextBox2.Text);

                objSchedule.BeginYear = int.Parse(TextBox4.Text);

                objSchedule.StartHour = int.Parse(TextBox5.Text);

                objSchedule.StartMinute = int.Parse(TextBox6.Text);

                objSchedule.DaysInterval = int.Parse(TextBox7.Text);

                Content objContent = new Content(objSearch);

                ContentSourceCollection objCollection = objContent.ContentSources;

                if (objCollection.Exists(TextBox1.Text))

                {

                    ContentSource objContentSource = objCollection[TextBox1.Text];

                    objContentSource.IncrementalCrawlSchedule = objSchedule;

                    objContentSource.CrawlPriority = CrawlPriority.High;

                    objContentSource.Update();

                    Label4.Text = "Incremental Crawl Schedule Successfully Configured";

                    Label4.ForeColor = System.Drawing.Color.Green;

                    TextBox1.Text = string.Empty;

                    TextBox2.Text = string.Empty;

                    TextBox3.Text = string.Empty;

                    TextBox4.Text = string.Empty;

                    TextBox5.Text = string.Empty;

                    TextBox6.Text = string.Empty;

                    TextBox7.Text = string.Empty;

                }

                else

                {

                    Label4.Text = "Content Source is not available";

                    Label4.ForeColor = System.Drawing.Color.Red;

                    TextBox1.Text = string.Empty;

                    TextBox2.Text = string.Empty;

                    TextBox3.Text = string.Empty;

                    TextBox4.Text = string.Empty;

                    TextBox5.Text = string.Empty;

                    TextBox6.Text = string.Empty;

                    TextBox7.Text = string.Empty;

                }

            }

        }

    }

}

 

Step 6: Deploy the solution file and add the new webpart to a SharePoint site.

 

Step 7: The output of the application looks like this:

 

 

 

Step 8: Data entering output of the application looks like this:

 

 

Step 9: Incremental Crawl schedule created output of the application looks like this:

 

 

I hope this article is useful for you.