There are many ways in CSOM to set the list properties of a SharePoint site but there are a few properties which we can’t set directly from list object. In this blog, I will explain how to set those properties using WebRequest, for example: offline client availability, major version limit, and major with minor version limit.

This below-mentioned code sample will help us to set those properties which we cannot access directly from the list object.

The code block for this is as mentioned below,

    using System;  
    using System.Collections.Generic;  
    using System.Linq;  
    using System.Text;  
    using System.Threading.Tasks;  
    using Microsoft.SharePoint.Client;  
    using System.Net;  
    using System.Security;  
    using Microsoft.SharePoint.Client.Utilities;  
    using System.IO;  
    namespace EditListProperties {  
        class EditListPropertiesByWebRequest {  
            public static string HEADER_CONTENT_APP = "application/x-vermeer-urlencoded";  
            public static string USER_AGENT_APP = "FrontPage";  
            public static string MESSAGE_SUCCESS_APP = "message=successfully";  
            public static string MESSAGE_CONFLICT_APP = "msg=Save Conflict";  
            public static string ENABLE_OFFLINE_CLIENT_AVAILABILITY_APP = "&ExcludeFromOfflineClient=False";  
            public static string DISABLE_OFFLINE_CLIENT_AVAILABILITY_APP = "&ExcludeFromOfflineClient=True";  
            public static string MAJOR_VERSION_LIMIT_APP = "&MajorVersionLimit=";  
            public static string MAJOR_VERSION_WITH_MINOR_APP = "&MajorWithMinorVersionsLimit=";  
            static void Main(string[] args) {  
                string listName = "CopyDoc";  
                string username = string.Empty;  
                string password = string.Empty;  
                NetworkCredential credentials = null;  
                List list = null;  
                string query = string.Empty;  
                try {  
                    username = "userName";  
                    password = "******";  
                    ClientContext ctx = new ClientContext("siteUrl"); //creating ClientContext from given SharePoint Site  
                    credentials = new NetworkCredential(username, password); //creating creadential object for SharePoint site.  
                    ctx.Credentials = credentials;  
                    Web web = ctx.Web;  
                    list = ctx.Web.Lists.GetByTitle(listName);  
                    ctx.Load(list, l => l.EnableVersioning);  
                    ctx.ExecuteQuery();  
                } catch (Exception ex) {}  
                try {  
                    //if we want to "SET OFFLINE CLIENT AVAILABILITY"  
                    string value = string.Empty;  
                    value = "Enable"; //We can change it to Enable or Disable accoring to requirement  
                    if (value == "Enable") // if we want it to be enabled  
                    {  
                        query += ENABLE_OFFLINE_CLIENT_AVAILABILITY_APP;  
                    } else if (value == "Disable") // if we want it to be disabled  
                    {  
                        query += DISABLE_OFFLINE_CLIENT_AVAILABILITY_APP;  
                    }  
                    //if we want to "SET MAJOR VERSION LIMIT"  
                    value = string.Empty;  
                    value = "10"; //We can change it to any intiger accoring to requirement  
                    list.EnableVersioning = true;  
                    list.Update();  
                    query += MAJOR_VERSION_LIMIT_APP + value;  
                    //if we want to "SET MAJOR WITH MINOR VERSIONS LIMIT"  
                    value = string.Empty;  
                    value = "5"; //We can change it to any intiger accoring to requirement  
                    list.EnableVersioning = true;  
                    list.Update();  
                    query += MAJOR_VERSION_WITH_MINOR_APP + value;  
                    GetHttpWebRequest(query, credentials);  
                } catch (Exception er) {}  
            }  
            #region GetWebRequest  
            /// <summary>  
            ///  
            /// </summary>  
            /// <param name="query"></param>  
            /// <param name="credential"></param>  
            private static void GetHttpWebRequest(string query, NetworkCredential credential) {  
                try {  
                    HttpWebRequest request = (HttpWebRequest) WebRequest.Create(query);  
                    request.Method = "POST";  
                    request.Headers["Content"] = HEADER_CONTENT_APP;  
                    request.Headers["X-Vermeer-Content-Type"] = HEADER_CONTENT_APP;  
                    request.UserAgent = USER_AGENT_APP;  
                    request.UseDefaultCredentials = false;  
                    request.KeepAlive = true;  
                    request.Credentials = credential;  
                    using(System.IO.Stream requestStream = request.GetRequestStream()) {  
                        GetWebResponse(request);  
                    }  
                } catch (Exception er) {}  
            }  
            #endregion  
            #region GetResponse  
            /// <summary>  
            ///  
            /// </summary>  
            /// <param name="webRequest"></param>  
            /// <returns></returns>  
            private static string GetWebResponse(HttpWebRequest webRequest) {  
                string responseString = string.Empty;  
                using(WebResponse webResponse = webRequest.GetResponse()) {  
                    using(StreamReader reader = new StreamReader(webResponse.GetResponseStream())) {  
                        responseString = reader.ReadToEnd();  
                        byte[] fileBuffer = Encoding.UTF8.GetBytes(responseString);  
                    }  
                }  
                if ((responseString.IndexOf(MESSAGE_SUCCESS_APP) < 0) && (responseString.IndexOf(MESSAGE_CONFLICT_APP) < 0)) {  
                    throw new Exception(responseString);  
                }  
                return responseString;  
            }#endregion  
        }  
    }

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Microsoft.SharePoint.Client;

using System.Net;

using System.Security;

using Microsoft.SharePoint.Client.Utilities;

using System.IO;

namespace EditListProperties {

class EditListPropertiesByWebRequest {

public static string HEADER_CONTENT_APP = "application/x-vermeer-urlencoded";

public static string USER_AGENT_APP = "FrontPage";

public static string MESSAGE_SUCCESS_APP = "message=successfully";

public static string MESSAGE_CONFLICT_APP = "msg=Save Conflict";

public static string ENABLE_OFFLINE_CLIENT_AVAILABILITY_APP = "&ExcludeFromOfflineClient=False";

public static string DISABLE_OFFLINE_CLIENT_AVAILABILITY_APP = "&ExcludeFromOfflineClient=True";

public static string MAJOR_VERSION_LIMIT_APP = "&MajorVersionLimit=";

public static string MAJOR_VERSION_WITH_MINOR_APP = "&MajorWithMinorVersionsLimit=";

static void Main(string[] args) {

string listName = "CopyDoc";

string username = string.Empty;

string password = string.Empty;

NetworkCredential credentials = null;

List list = null;

string query = string.Empty;

try {

username = "userName";

password = "******";

ClientContext ctx = new ClientContext("siteUrl"); //creating ClientContext from given SharePoint Site

credentials = new NetworkCredential(username, password); //creating creadential object for SharePoint site.

ctx.Credentials = credentials;

Web web = ctx.Web;

list = ctx.Web.Lists.GetByTitle(listName);

ctx.Load(list, l => l.EnableVersioning);

ctx.ExecuteQuery();

} catch (Exception ex) {}

try {

//if we want to "SET OFFLINE CLIENT AVAILABILITY"

string value = string.Empty;

value = "Enable"; //We can change it to Enable or Disable accoring to requirement

if (value == "Enable") // if we want it to be enabled

{

query += ENABLE_OFFLINE_CLIENT_AVAILABILITY_APP;

} else if (value == "Disable") // if we want it to be disabled

{

query += DISABLE_OFFLINE_CLIENT_AVAILABILITY_APP;

}

//if we want to "SET MAJOR VERSION LIMIT"

value = string.Empty;

value = "10"; //We can change it to any intiger accoring to requirement

list.EnableVersioning = true;

list.Update();

query += MAJOR_VERSION_LIMIT_APP + value;

//if we want to "SET MAJOR WITH MINOR VERSIONS LIMIT"

value = string.Empty;

value = "5"; //We can change it to any intiger accoring to requirement

list.EnableVersioning = true;

list.Update();

query += MAJOR_VERSION_WITH_MINOR_APP + value;

GetHttpWebRequest(query, credentials);

} catch (Exception er) {}

}

#region GetWebRequest

/// <summary>

///

/// </summary>

/// <param name="query"></param>

/// <param name="credential"></param>

private static void GetHttpWebRequest(string query, NetworkCredential credential) {

try {

HttpWebRequest request = (HttpWebRequest) WebRequest.Create(query);

request.Method = "POST";

request.Headers["Content"] = HEADER_CONTENT_APP;

request.Headers["X-Vermeer-Content-Type"] = HEADER_CONTENT_APP;

request.UserAgent = USER_AGENT_APP;

request.UseDefaultCredentials = false;

request.KeepAlive = true;

request.Credentials = credential;

using(System.IO.Stream requestStream = request.GetRequestStream()) {

GetWebResponse(request);

}

} catch (Exception er) {}

}

#endregion

#region GetResponse

/// <summary>

///

/// </summary>

/// <param name="webRequest"></param>

/// <returns></returns>

private static string GetWebResponse(HttpWebRequest webRequest) {

string responseString = string.Empty;

using(WebResponse webResponse = webRequest.GetResponse()) {

using(StreamReader reader = new StreamReader(webResponse.GetResponseStream())) {

responseString = reader.ReadToEnd();

byte[] fileBuffer = Encoding.UTF8.GetBytes(responseString);

}

if ((responseString.IndexOf(MESSAGE_SUCCESS_APP) < 0) && (responseString.IndexOf(MESSAGE_CONFLICT_APP) < 0)) {

throw new Exception(responseString);

}

return responseString;

}#endregion

}

In this blog, I have explained how you can set the properties of a SharePoint list using WebRequest. I hope this information will help you out in a few scenarios.

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