Hello,

is it possible to update/modify a list item in a document library via REST Api (c#)?

Unfortunately, I could not find any code samples.

Any kind of help will be appreciated.

Thanks,

Dennis

Files and Folders using REST

http://code.msdn.microsoft.com/SharePoint-2013-Perform-ab9c4ae5

Basic data access operations with REST

http://code.msdn.microsoft.com/SharePoint-2013-Perform-335d925b

All other samples

http://msdn.microsoft.com/en-us/library/jj901637.aspx

Hi Dennis,

Yes, it is possible to update list item using REST. Please find a simple code sample below to update the title of an item using REST call  -

// Update Operation
// listName: The name of the list you want to get items from
// siteurl: The url of the site that the list is in. // title: The value of the title field for the new item
// itemId: the id of the item to update
// success: The function to execute if the call is sucesfull
// failure: The function to execute if the call fails
function updateListItem(itemId, listName, siteUrl, title, success, failure) {
    var itemType = GetItemTypeForListName(listName);
 
    var item = {
        "__metadata": { "type": itemType },
        "Title": title
    };
 
    getListItemWithId(itemId, listName, siteUrl, function (data) {
        $.ajax({
            url: data.__metadata.uri,
            type: "POST",
            contentType: "application/json;odata=verbose",
            data: JSON.stringify(item),
            headers: {
                "Accept": "application/json;odata=verbose",
                "X-RequestDigest": $("#__REQUESTDIGEST").val(),
                "X-HTTP-Method": "MERGE",
                "If-Match": data.__metadata.etag
            },
            success: function (data) {
                success(data);
            },
            error: function (data) {
                failure(data);
            }
        });
    }, function(data){
        failure(data);
    });
}
function GetItemTypeForListName(name) {
    return"SP.Data." + name.charAt(0).toUpperCase() + name.slice(1) + "ListItem";
}

Narahari

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Thank you both very much for your replies.

@Narahari: That's exactly what I am looking for, but for C# not JavaScript. Unfortunately, I was not able to transfer the code to C#. Do you have a C# sample as well?

Thanks,

Dennis

C# examples are here:

http://msdn.microsoft.com/en-us/library/jj164022.aspx

• Marked as answer by Qiao WeiMicrosoft contingent staff, Moderator Sunday, August 18, 2013 8:54 AM

It's possible, just  leverage HttpWebRequest and HttpResponse object, make a HTTP POST call

HttpWebRequest endpointRequest =
  (HttpWebRequest)HttpWebRequest.Create(
  "http:// <site url>/_api/contextinfo");
endpointRequest.Method = "POST";
endpointRequest.Accept = "application/json;odata=verbose";
endpointRequest.Headers.Add("Authorization",
  "Bearer " + accessToken);
HttpWebResponse endpointResponse =
  (HttpWebResponse)endpointRequest.GetResponse();

Then set the necessary headers in the request

Hi Dennis,

Please find below a sample code in C# which updates the list title using REST calls. You can update the code (string data and url) in the sample below to update a list item also.

Uri uri = new Uri("http://sp2013vm/_api/web/lists/GetByTitle('Tasks')");            
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
    request.ContentType = "application/json;odata=verbose";
    request.Headers["X-RequestDigest"] = getDigestValue();
    request.Headers["X-HTTP-Method"] = "MERGE";
    request.Headers["IF-MATCH"] = "*";
    request.Credentials = CredentialCache.DefaultCredentials;
    request.Accept = "application/json;odata=verbose";
    request.Method = "POST";

    string stringData = "{ '__metadata': { 'type': 'SP.List' }, 'Title': 'New title' }";
    request.ContentLength = stringData.Length;
    StreamWriter writer = new StreamWriter(request.GetRequestStream());
    writer.Write(stringData);
    writer.Flush();

    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    StreamReader reader = new StreamReader(response.GetResponseStream());

Narahari

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• Marked as answer by Qiao WeiMicrosoft contingent staff, Moderator Sunday, August 18, 2013 8:54 AM

Hi,

Thanks for the post,

Actually i need to send a msdocument to office365 document library by using rest api at client side.

how to attach file to Sharepoint online [office 365] document library by using visual studio 2010 & Rest API services in visual studio?

Can anybody please tell me its urgent i have been searching for this task since one week,please help me

atleast u tell me how to connect to office365 online through java script or any csom with rest api only.

please help me.

Thanking you in Advance

Mahesh