Develop Reference

how to get modifiedby property of a file for showing file details sharepoint C#

I want to display files from a sharepoint folder that were modified by username. please help me for this. Also tell me how to show this file with sorting order by datetime.
I tried using
docName.Add(file.ModifiedBy);
property but its not available, here is the code:
public List<string> getFiles(ClientContext CContext,string INVOICENO)
{
List list = CContext.Web.Lists.GetByTitle("Documents");
CContext.Load(list);
CContext.Load(list.RootFolder);
CContext.Load(list.RootFolder.Folders);
CContext.Load(list.RootFolder.Files);
CContext.ExecuteQuery();
FolderCollection fcol = list.RootFolder.Folders;
List<string> docName = new List<string>();
foreach (Folder f in fcol)
{
if(INVOICENO==null)
{
INVOICENO = "";
}
string foldername = INVOICENO.ToString();
if (f.Name == foldername)
{
CContext.Load(f.Files);
CContext.ExecuteQuery();
FileCollection fileCol = f.Files;
foreach (File file in fileCol)
{
docName.Add(file.Name);
docName.Add(file.TimeLastModified.ToShortDateString());
}
}
}
return docName.ToList();
}

According to my testing and research, you can use CAML Query to display the files modified by the username from the SharePoint folder.
Here is an example you can refer to:(sorted by modification time in ascending order)
static void Main(string[] args)
{
var clientContext = GetonlineContext();
Web site = clientContext.Web;
List list = clientContext.Web.Lists.GetByTitle("Library Name");
CamlQuery query = new CamlQuery();
query.ViewXml = "<View><Query><Where><Eq><FieldRef Name='Editor' /><Value Type='User'>UserName</Value></Eq></Where><OrderBy><FieldRef Name='Modified' Ascending='True' /></OrderBy></Query><ViewFields /><QueryOptions /></View>";
ListItemCollection collListItem = list.GetItems(query);
clientContext.Load(collListItem);
clientContext.ExecuteQuery();
foreach (ListItem item in collListItem)
{
Debug.WriteLine("Name:"+item["FileLeafRef"]+"\n"+"Modified"+item["Modified"]);
}
clientContext.ExecuteQuery();
}

Reading Sharepoint Online List Items using Client ID and Secret

I am reading the sharepoint online list item using SharePointPnPCoreOnline as below. But it doesn't retrieve any items. Data count is always zero. Please let me know what I am missing.
using Microsoft.SharePoint.Client;
using OfficeDevPnP.Core;
using System;
string siteUrl = "****";
string clientId = "*****";
string clientSecret = "******";
using (var clientContext = new AuthenticationManager().GetAppOnlyAuthenticatedContext(siteUrl, clientId, clientSecret))
{
clientContext.Load(clientContext.Web, p => p.Title);
clientContext.ExecuteQuery();
Console.WriteLine(clientContext.Web.Title);
List sourceList = clientContext.Web.Lists.GetByTitle("MyList");
clientContext.Load(sourceList);
clientContext.ExecuteQuery();
Console.WriteLine("GUID of List: " + sourceList.Id);
CamlQuery camlQuery = new CamlQuery();
ListItemCollection listItems = sourceList.GetItems(camlQuery);
clientContext.Load(listItems);
clientContext.ExecuteQuery();
Console.WriteLine("Total Item Count of List: " + listItems.Count);
foreach (ListItem listItem in listItems)
{
foreach (var field in listItem.FieldValues)
{
Console.WriteLine("{0} : {1}", field.Key, field.Value);
}
}
}
Note: when I try the same set of code with username and password,I am able to retreive the items in the list.
And the Client ID and Secret are created in Azure.

C# Sharepoint.Client - Return all files and folders from a given subfolder

I am trying to return all files and folders in a SharePoint library starting from a given subfolder.
If I set the FolderServerRelativeUrl on the CamlQuery to the folder i wish to start from, I can get all the list items for that given folder; however, when I try to add in camlQuery.ViewXML to recursively return items with any additional sub folders as well, I get the following exception:
Microsoft.SharePoint.Client.ServerException: 'The attempted operation is prohibited because it exceeds the list view threshold enforced by the administrator.'
Code
public static IEnumerable<string> GetSharepointFiles2(string sharePointsite, string libraryName, string username, string password, string subFolders)
{
Uri filename = new Uri(sharePointsite);
string server = filename.AbsoluteUri.Replace(filename.AbsolutePath, "");
List<string> fullfilePaths = new List<string>();
using (ClientContext cxt = new ClientContext(filename))
{
cxt.Credentials = GetCreds(username, password);
Web web = cxt.Web;
cxt.Load(web, wb => wb.ServerRelativeUrl);
cxt.ExecuteQuery();
List list = web.Lists.GetByTitle(libraryName);
cxt.Load(list);
cxt.ExecuteQuery();
Folder folder = web.GetFolderByServerRelativeUrl(web.ServerRelativeUrl + subFolders);
cxt.Load(folder);
cxt.ExecuteQuery();
CamlQuery camlQuery = new CamlQuery();
camlQuery.ViewXml = #"<View Scope='RecursiveAll'>
<Query>
</Query>
</View>";
camlQuery.FolderServerRelativeUrl = folder.ServerRelativeUrl;
ListItemCollection listItems = list.GetItems(camlQuery);
cxt.Load(listItems);
cxt.ExecuteQuery();
foreach (ListItem listItem in listItems)
{
if (listItem.FileSystemObjectType == FileSystemObjectType.File)
{
fullfilePaths.Add(String.Format("{0}{1}", server, listItem["FileRef"]));
}
else if (listItem.FileSystemObjectType == FileSystemObjectType.Folder)
{
Console.WriteLine(String.Format("{0}{1}", server, listItem["FileRef"]));
fullfilePaths.Add(String.Format("{0}{1}", server, listItem["FileRef"]));
}
}
}
return fullfilePaths;
}
private static SharePointOnlineCredentials GetCreds(string username, string password)
{
SecureString securePassword = new SecureString();
foreach (char c in password.ToCharArray()) securePassword.AppendChar(c);
return new SharePointOnlineCredentials(username, securePassword);
}
In terms of the threshold limit, I have tried this on a folder with only 1 file and 1 folder in (in turn that folder has 1 file only), so if the limit is default 5000, I have no idea why I'd be getting this.

Finally found a solution that works, even if it is a bit sledgehammer!
Although the folders I was looking to retrieve the items for had far less than 5000 items, the issue was the list as a whole did exceed this threshold (In this case it was about 11,000 items).
I removed the FolderServerRelativeURL attribute and then used ListItemCollectionPosition to paginate/batch up the all the items in the list. Once all the items are in a collection it can be filtered with Linq for the relevant subfolder. (CAML Query - Going around the 5000 List Item Threshold)
If anyone has a way of being more targeted with the items, I'd love to see it.
Code:
public static IEnumerable<ListItem> GetSharepointFiles2(string sharePointsite, string libraryName, string username, string password, string subFolders)
{
Uri filename = new Uri(sharePointsite);
List<ListItem> items = new List<ListItem>();
using (ClientContext cxt = new ClientContext(filename))
{
cxt.Credentials = GetCreds(username, password);
Web web = cxt.Web;
cxt.Load(web, wb => wb.ServerRelativeUrl);
cxt.ExecuteQuery();
List list = web.Lists.GetByTitle(libraryName);
cxt.Load(list);
cxt.ExecuteQuery();
CamlQuery camlQuery = new CamlQuery();
camlQuery.ViewXml = "<View Scope='Recursive'><RowLimit>5000</RowLimit></View>";
do
{
ListItemCollection listItems = list.GetItems(camlQuery);
cxt.Load(listItems);
cxt.ExecuteQuery();
items.AddRange(listItems);
camlQuery.ListItemCollectionPosition = listItems.ListItemCollectionPosition;
} while (camlQuery.ListItemCollectionPosition != null);
var filteritems = items.Where(tt => tt.FieldValues["FileRef"].ToString().StartsWith(web.ServerRelativeUrl + subFolders));
return filteritems;
}
}

Sharepoint get content from list

Hi i try to write a little application for sharepoint 2013 where we can backup our projects on an SQL Server. Now i try to loop trough all projects on sharepoint so i can get the content of the fields. Like country = austria.
I tried to follow this guide but had no luck: https://msdn.microsoft.com/en-us/library/office/fp179912.aspx
Here is that what i got:
//Loads only a Projeclist from sharepoint
public SPpowerPlantList loadProjectFromSharePoint()
{
SPpowerPlantList pplist = new SPpowerPlantList();
ClientContext context = new ClientContext(powerPlantSite);
Web web = context.Web;
context.Load(web.Lists);
context.ExecuteQuery();
foreach (List list in web.Lists)
{
SPpowerPlant pp = new SPpowerPlant();
//Stuff like this one should work but dont....
pp.country = list.country
}
return pplist;
}
Any advice would be great and sorry for my english
EDIT: SPpowerPlantList should be a List of all Projects of the Project-List from Sharepoint. And the loadProjectsFromSharepoint is supposed to get a list of Projects wich the i can start to add the values to the sql Server. Stuff like SQL Table value = Sharepoint Field Value.
EDIT2 So the access to the files now work for a few fields but know i get an The property or field has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested exeption.
Here is the new code: (some fields work like currency)
//Loads only a Projeclist from sharepoint
public SPpowerPlantList loadProjectFromSharePoint()
{
SPpowerPlantList powerPlantList = new SPpowerPlantList();
ClientContext context = new ClientContext(powerPlantSite);
List powerPlantsList = context.Web.Lists.GetByTitle("Power Plants");
CamlQuery query = CamlQuery.CreateAllItemsQuery();
query.ViewXml = #"<View><Query> </Query></View>";
ListItemCollection items = powerPlantsList.GetItems(query);
context.Load(items);
context.ExecuteQuery();
foreach (ListItem listItem in items)
{
SPpowerPlant powerPlant = new SPpowerPlant();
powerPlant.projectName = listItem["Project"].ToString();
powerPlant.location = listItem["Loacation"].ToString();
powerPlant.country = listItem["Country"].ToString();
powerPlant.currency = listItem["Currency"].ToString();
powerPlant.shortName = listItem["Short Name"].ToString();
powerPlant.spaceUrl = listItem["Space"].ToString();
powerPlant.numberOfWtgs = Convert.ToInt32(listItem["Number of WTGs"]);
powerPlant.mwWtg = Convert.ToDouble(listItem["MW WTG"]);
powerPlant.mwTotal = Convert.ToDouble(listItem["MW Total"]);
powerPlant.projectShareWeb = Convert.ToDouble(listItem["Project Share "]);
powerPlant.mwWeb = Convert.ToDouble(listItem["MW "]);
powerPlant.phaseDescription = listItem["Phase Description"].ToString();
powerPlant.projectProgress = Convert.ToDouble(listItem["Project Progress"]);
powerPlant.mwDeveloped = Convert.ToDouble(listItem["MW developed"]);
powerPlant.possibleWtgTypes = listItem["Possible WTG Types"].ToString();
powerPlant.hubHeight = listItem["Hub Height"].ToString();
powerPlant.allPermits = Convert.ToDateTime(listItem["All Permits"]);
powerPlant.cod = Convert.ToDateTime(listItem["COD"]);
powerPlant.projectManager = listItem["Project manager"].ToString();
powerPlant.technology = listItem["Technology"].ToString();
powerPlant.state = listItem["State"].ToString();
powerPlant.stateSince = Convert.ToDateTime(listItem["State since"]);
powerPlant.visibility = listItem["Visibillity"].ToString();
powerPlant.phase = listItem["Phase"].ToString();
powerPlant.phaseNumber = listItem["Phase Number"].ToString();
//Console.WriteLine(listItem["Currency"]);
powerPlantList.Add(powerPlant);
}
return powerPlantList;
}
I tied it with an lambda expression but no success.

Well the problem was that my listitem["names"] where not correct.
To get that stuff to work you need to go to the sharepoint site and look at the link when you sort it there you see the right name for the listitem.
New and working form:
//Loads only a Projeclist from sharepoint
public SPpowerPlantList loadProjectFromSharePoint()
{
SPpowerPlantList powerPlantList = new SPpowerPlantList();
ClientContext context = new ClientContext(powerPlantSite);
List powerPlantsList = context.Web.Lists.GetByTitle("Power Plants");
CamlQuery query = CamlQuery.CreateAllItemsQuery(100);
//query.ViewXml = #"<View><Query> </Query></View>";
ListItemCollection items = powerPlantsList.GetItems(query);
//context.Load(web.Lists,
// lists => lists.Include(list => list.Title, // For each list, retrieve Title and Id.
// list => list.Id,
// list => list.Description));
context.Load(items);
context.ExecuteQuery();
foreach (ListItem listItem in items)
{
SPpowerPlant powerPlant = new SPpowerPlant();
powerPlant.projectName = listItem["Title"].ToString();
powerPlant.location = listItem["Location"].ToString();
powerPlant.country = listItem["Country"].ToString();
powerPlant.currency = listItem["Currency"].ToString();
powerPlant.shortName = listItem["Short_x0020_Name"].ToString();
powerPlant.spaceUrl = listItem["Space"].ToString();
powerPlant.numberOfWtgs = Convert.ToInt32(listItem["Number_x0020_of_x0020_WTGs"]);
//Console.WriteLine(listItem[""]);
//powerPlantList.Add(powerPlant);
}
return null;
}

C# client object

I want to read a specific SharePoint list into a datatable. I am struggeling to read the Lookup Values.
Example:
Customer list, each customer is assigned to a team member. The Team members are a lookup of the Team member list.
I have the following questions:
1.) How can I get the Information which list is linked to this lookup field?
2.) How can read the field, gets the value or the index?
I added my function below, many thanks for helping a desperate novice in SharePoint...
Regards
Volker
public System.Data.DataTable ReadDatafromSPList(ClientContext clientContext, string ListName, string ViewName)
{
Web site = clientContext.Web;
List list = site.Lists.GetByTitle(ListName);
View view = list.Views.GetByTitle(ViewName);
ViewFieldCollection viewFields = view.ViewFields;
clientContext.Load(view);
clientContext.ExecuteQuery();
CamlQuery camlQuery = new CamlQuery();
camlQuery.ViewXml = view.ViewQuery;
ListItemCollection ListColletion = list.GetItems(camlQuery);
clientContext.Load(list);
clientContext.Load(ListColletion);
clientContext.Load(viewFields);
clientContext.ExecuteQuery();
string[] headers = view.ViewFields.ToArray();
System.Data.DataTable dTable = new System.Data.DataTable();
foreach (string header in headers)
{
dTable.Columns.Add(header);
}
string str="";
foreach (ListItem item in ListColletion)
{
dTable.Rows.Add(dTable.NewRow());
foreach (string header in headers)
{
try
{
str = item[header].ToString();
if (str == "Microsoft.SharePoint.Client.FieldLookupValue")
{
//??????????????????
//??????????????????
}
dTable.Rows[dTable.Rows.Count - 1][header] = str;
}
catch
{
dTable.Rows[dTable.Rows.Count - 1][header] = "";
}
}
}
return dTable;
}

Do try this..
ClientContext context = new ClientContext(ServerText.Text);
List list = context.Web.Lists.GetByTitle("Tasks");
CamlQuery query = new CamlQuery();
query.ViewXml = "<View/>";
ListItemCollection items = list.GetItems(query);
context.Load(list);
context.Load(items);
context.ExecuteQuery();
DataTable table = new DataTable();
table.Columns.Add("Id");
table.Columns.Add("Title");
foreach (ListItem item in items)
table.Rows.Add(item.Id, item["Title"]);