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DocuSign API: Populating dynamic fields

I am trying to have fields in my template be populated when I call the post request of my API, currently I am getting the template which I created in DocuSign's Template creator. But I need to be able dynamically change these fields contents.
How do I find the custom field which I created? I am currently using TextCustomField. The only thing I can see which would find the custom field is FieldId but there is no option on the website to set or find one. So I am not sure what to do from here. Here is a code snippet to how I have tried it so far, to no success.
I a junior developer and I am new to docusign, and I feel that the documentation leaves a lot to be desired.
CustomFields cf = new CustomFields();
cf.TextCustomFields = new List<TextCustomField>();
TextCustomField tcf = new TextCustomField();
tcf.FieldId = "001";
tcf.Name = "test";
tcf.Value = "NewValueFor test_field_1";
cf.TextCustomFields.Add(tcf);
env.CustomFields = cf;
I set the data label on the website to 001.

Looks like there's been a misunderstanding in DocuSign vocabulary. Your screenshot shows a "field", which in eSignature API terms is a "tab". The TextCustomField object you currently have would be used to populate an Envelope Custom Field - not what you're currently trying to do.
If you've placed that tab on your template, then you can populate it's value by creating a TextTab object and assigning it to your signer's list of tabs like so. The TabLabel aligns with the web console's Name parameter, and the Value is what you want to populate it with.
Text exampleTab1 = new Text //Create the Tab definition
{
Value = "Example Value",
TabLabel = "test_field_1",
};
Signer signer1 = new Signer //Create a Signer
{
Email = signerEmail,
Name = signerName,
RecipientId = "1",
RoutingOrder = "1",
};
Tabs signer1Tabs = new Tabs //Assign Tab to Signer
{
TextTabs = new List<Text> { exampleTab1 }
};

You probably can leverage the C# feature called LINQ, you need to add the following namespace to your class:
using System.Linq;
And then you can find your objects with this code:
var mycustomField = cf.TextCustomFields.FirstOrDefault(f => f.FieldId == "MYIDENTIFICATOR");

TFS Integration

I am trying to do a TFS integration with automatic sync with tfs to my db..
All I m doing with window service...
For that I have coded as below...
DataRow dr = dstSyncWorkItem.Tables["Workitems"].Rows[i];
String uri = ConfigurationManager.AppSettings["TfsUri"] + dr["ProCollectionName"];
Uri collectionUri = new Uri(uri);
NetworkCredential myNetCredentials = new NetworkCredential(ConfigurationManager.AppSettings["TfsUsername"], ConfigurationManager.AppSettings["TfsPassword"]);
ICredentials myCredentials = (ICredentials)myNetCredentials;
TfsTeamProjectCollection tpc = new TfsTeamProjectCollection(collectionUri, myCredentials);
WorkItemStore workItemStore = tpc.GetService<WorkItemStore>();
Project teamProject = workItemStore.Projects[dr["Project"].ToString()];
WorkItemType workItemType = teamProject.WorkItemTypes[dr["Type"].ToString()];
WorkItem workItem = new WorkItem(workItemType);
workItem.Title = dr["Title"].ToString();
workItem.Description = dr["Desc"].ToString();
workItem.Save();
and This will giving following error...
TF237124: Work Item is not ready to save.

You need to validate the work item before you can save it. Call:
ArrayList validation = workItem.Validate();
This will ensure that any changes you've made are appropriate, and make any additional state changes that your work item rules have defined based on your changes.
If there are validation failures, you must deal with them appropriately. Otherwise, you can then call:
workItem.Save();

You have not filled out all of the required fields. While calling the Validate() function will give you a list of errors you will be required to fill out Area & Iteration paths. Along with Title these are the only OOB required fields.
You don't see this in any of the UI's as they are populated by default. If you fill them out with something like "Iteration/myproject/" you should pass.

Display sharepoint people/group field list's value in people editor

i want to display value of sharepoint people/group value in people editor(web part) when the page is loaded. This is the code that i use to get the value displayed in web part
if(SPContext .Current .ListItem .ID >= 1)
using (SPSite site = new SPSite("sitename"))
{
using (SPWeb web = site.OpenWeb())
{
var id = SPContext.Current.ListItem.ID;
SPList lists = web.Lists["DDClist"];
SPListItem item = lists.GetItemById(id);
{
string test = Convert.ToString(item["Project No"]);
tb_pno.Text = test;
string test2 = Convert.ToString(item["Project Title"]);
tb_pname.Text = test2;
string test3 = Convert.ToString(item["DDC No"]);
tb_idcno.Text = test3;
string test4 = Convert.ToString(item["Date In"]);
TextBox3.Text = test4;
}
}
}
is there a way to do the same thing with people editor?

This is all a little tricky; when I've had to do it before, I use the following to get SPUser object out of a field:
SPUser singleUser = new SPFieldUserValue(
item.Web, item["Single User"] as string).User;
SPUser[] multipleUsers = ((SPFieldUserValueCollection)item["MultipleUsers"])
.Cast<SPFieldUserValue>().Select(f => f.User);
I'm not sure why one user is stored as a string, but multiple users are stored as a specific object; it may also not be consistent in this so you might have to debug a bit and see what the type in your field is.
Once you have these SPUsers, you can populate your PeopleEditor control
using the account names as follows (quite long-winded):
ArrayList entityArrayList = new ArrayList();
foreach(SPUser user in multipleUsers) // or just once for a single user
{
PickerEntity entity = new PickerEntity;
entity.Key = user.LoginName;
entity = peMyPeople.ValidateEntity(entity);
entityArrayList.Add(entity);
}
peMyPeople.UpdateEntities(entityArrayList);
This also performs validation of the users of some kind.
If the page this control appears on may be posted-back, you need the following to be done during the postback in order for the values to be correctly roundtripped; I put it in PreRender but it could happen elsewhere in the lifecycle:
protected override void OnPreRender(EventArgs e)
{
if (IsPostBack)
{
var csa = peMyPeople.CommaSeparatedAccounts;
csa = peMyPeople.CommaSeparatedAccounts;
}
}
If you want to check any error messages that the control generates for you (if the user input is incorrect), you need to have done this switchout already:
var csa = usrBankSponsor.CommaSeparatedAccounts;
csa = usrOtherBankParties.CommaSeparatedAccounts;
//ErrorMessage is incorrect if you haven't done the above
if (!String.IsNullOrEmpty(usrBankSponsor.ErrorMessage))
{
...
}
It's really not very nice and there may be a much better way of handling it, but this is the result of my experience so far so hopefully it will save you some time.

Sharepoint Client Object Model setting ModifiedBy field

I am trying to update the "ModifiedBy" field in a Sharepoint discussion board using the Client Object Model. By changing the "Editor" and "Author" fields, I can change the "ModifiedBy" that appears on the list view. However, once you click on a discussion post, the "ModifiedBy" field that appears there (the one with the picture above it) does not reflect the changes. After experimenting, I discovered that the field I need to change to correct this is called "MyEditor". Unfortunately, this field is read-only.
In the code below, I try to change the read-only settings of the field to false. When I look at the MyEditor field in Visual Studio's debugger after the ExecuteQuery() line at the bottom of the first block, it shows that the ReadOnlyField value has in fact been set to false.
sharepointContext.Load(discussionList);
sharepointContext.ExecuteQuery();
var fields = discussionList.Fields;
sharepointContext.Load(fields);
sharepointContext.ExecuteQuery();
var field = fields.GetByInternalNameOrTitle("MyEditor");
field.ReadOnlyField = false;
field.Update();
sharepointContext.Load(field);
sharepointContext.ExecuteQuery();
The code above executes with no problems. The problem comes with this next block:
//...Code to initialize discussionItem...
discussionItem["MyEditor"] = 0;
discussionItem["Editor"] = 0;
discussionItem["Author"] = 0;
discussionItem["Body"] = "Testing";
discussionItem["Title"] = "Hello Worlds";
discussionItem.Update();
sharepointContext.Load(discussionItem);
sharepointContext.ExecuteQuery();
When the code reaches the ExecuteQuery() at the bottom of the second block, it throws a ServerException with the following message:
Invalid data has been used to update the list item.
The field you are trying to update may be read only.
To make sure that the MyEditor field was the one causing the exception to be thrown, I commented out the line where I set it and ran the code again. Everything worked fine. I don't understand what is wrong, can someone help me?

In case someone needs to find the user by name, it goes like this:
private static FieldUserValue GetUser(ClientContext clientContext, string userName)
{
var userValue = new FieldUserValue();
var newUser = clientContext.Web.EnsureUser(userName);
clientContext.Load(newUser);
clientContext.ExecuteQuery();
userValue.LookupId = newUser.Id;
return userValue;
}
The returned value can be set via item["Author"]

ModifiedBy and CreadtedBy calculated automatically from Author and Editor you need to change only Author and Editor fields like this:
using (var clientContext = new ClientContext(#"http://server"))
{
var web = clientContext.Web;
var lst = web.Lists.GetByTitle("Discus");
var item = lst.GetItemById(2);
item["Author"] = 3;
item["Editor"] = 2;
item.Update();
clientContext.ExecuteQuery();
Console.WriteLine("done");
}

SharePoint : How can I programmatically add items to a custom list instance

I am really looking for either a small code snippet.
I have a C# console app that I will use to somehow add list items to my custom list. I have created a custom content type too. So not sure if I need to create an C# class from this content type too. Perhaps not.

I think these both blog post should help you solving your problem.
http://blog.the-dargans.co.uk/2007/04/programmatically-adding-items-to.html
http://asadewa.wordpress.com/2007/11/19/adding-a-custom-content-type-specific-item-on-a-sharepoint-list/
Short walk through:
Get a instance of the list you want to add the item to.
Add a new item to the list:
SPListItem newItem = list.AddItem();
To bind you new item to a content type you have to set the content type id for the new item:
newItem["ContentTypeId"] = <Id of the content type>;
Set the fields specified within your content type.
Commit your changes:
newItem.Update();

To put it simple you will need to follow the step.
You need to reference the Microsoft.SharePoint.dll to the application.
Assuming the List Name is Test and it has only one Field "Title" here is the code.
using (SPSite oSite=new SPSite("http://mysharepoint"))
{
using (SPWeb oWeb=oSite.RootWeb)
{
SPList oList = oWeb.Lists["Test"];
SPListItem oSPListItem = oList.Items.Add();
oSPListItem["Title"] = "Hello SharePoint";
oSPListItem.Update();
}
}
Note that you need to run this application in the Same server where the SharePoint is installed.
You dont need to create a Custom Class for Custom Content Type

You can create an item in your custom SharePoint list doing something like this:
using (SPSite site = new SPSite("http://sharepoint"))
{
using (SPWeb web = site.RootWeb)
{
SPList list = web.Lists["My List"];
SPListItem listItem = list.AddItem();
listItem["Title"] = "The Title";
listItem["CustomColumn"] = "I am custom";
listItem.Update();
}
}
Using list.AddItem() should save the lists items being enumerated.

This is how it was on the Microsoft site, with me just tweaking the SPSite and SPWeb since these might vary from environment to environment and it helps not to have to hard-code these:
using (SPSite oSiteCollection = new SPSite(SPContext.Current.Site.Url))
{
using (SPWeb oWeb = oSiteCollection.OpenWeb(SPContext.Current.Web))
{
SPList oList = oWeb.Lists["Announcements"];
// You may also use
// SPList oList = oWeb.GetList("/Lists/Announcements");
// to avoid querying all of the sites' lists
SPListItem oListItem = oList.Items.Add();
oListItem["Title"] = "My Item";
oListItem["Created"] = new DateTime(2004, 1, 23);
oListItem["Modified"] = new DateTime(2005, 10, 1);
oListItem["Author"] = 3;
oListItem["Editor"] = 3;
oListItem.Update();
}
}
Source:
SPListItemClass (Microsoft.SharePoint). (2012). Retrieved February 22, 2012, from http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.splistitem.aspx.

I had a similar problem and was able to solve it by following the below approach (similar to other answers but needed credentials too),
1- add Microsoft.SharePointOnline.CSOM by tools->NuGet Package Manager->Manage NuGet Packages for solution->Browse-> select and install
2- Add "using Microsoft.SharePoint.Client; "
then the below code
string siteUrl = "https://yourcompany.sharepoint.com/sites/Yoursite";
SecureString passWord = new SecureString();
var password = "Your password here";
var securePassword = new SecureString();
foreach (char c in password)
{
securePassword.AppendChar(c);
}
ClientContext clientContext = new ClientContext(siteUrl);
clientContext.Credentials = new SharePointOnlineCredentials("Username#domain.nz", securePassword);/*passWord*/
List oList = clientContext.Web.Lists.GetByTitle("The name of your list here");
ListItemCreationInformation itemCreateInfo = new ListItemCreationInformation();
ListItem oListItem = oList.AddItem(itemCreateInfo);
oListItem["PK"] = "1";
oListItem["Precinct"] = "Mangere";
oListItem["Title"] = "Innovation";
oListItem["Project_x0020_Name"] = "test from C#";
oListItem["Project_x0020_ID"] = "ID_123_from C#";
oListItem["Project_x0020_start_x0020_date"] = "2020-05-01 01:01:01";
oListItem.Update();
clientContext.ExecuteQuery();
Remember that your fields may be different with what you see, for example in my list I see "Project Name", while the actual value is "Project_x0020_ID". How to get these values (i.e. internal filed values)?
A few approaches:
1- Use MS flow and see them
2- https://mstechtalk.com/check-column-internal-name-sharepoint-list/ or https://sharepoint.stackexchange.com/questions/787/finding-the-internal-name-and-display-name-for-a-list-column
3- Use a C# reader and read your sharepoint list
The rest of operations (update/delete):
https://learn.microsoft.com/en-us/previous-versions/office/developer/sharepoint-2010/ee539976(v%3Doffice.14)