Upload a Document to the SharePoint Document Library using a SharePoint API

This article will discuss only about adding documents using Web Services, however we can similarly upload documents using WCF services or through Web pages. We can also upload documents directly using the Upload menu from the SharePoint Interface. You can see interface for adding documents directly using the SharePoint interface below.

Let us see how to add documents to the Document Library using a Web Service

Step 1: At first we will Create a New ASP.Net Web Service Application. Open Visual Studio. File > NewProject> Select the language (C# or VB.NET) > Select Web Template >Select ASP.Net WebService Application.

Step 2: Name it as UploadFileService and specify the location where you want to save that project. This step will create a Service1.asmx file.

Step 3: The Service1.asmx file by default will contain a HelloWorld method as shown below:

C#

[WebMethod]

public string HelloWorld()

{

    return "Hello World";

}

Step 4: We will change the method name to “UploadFileToDocmentLibrary” and the return type to void. So now our method will look like this.

[WebMethod]

public void UploadFileToDocmentLibrary()

{

}

Step 5: Add a reference to the Microsoft. SharePoint dll as shown in screenshot below and add the Namespace to your .cs file. This namespace is required to be used in the SharePoint Site

using Microsoft.SharePoint;

Step 6: Now add code in “UploadFileToDocmentLibrary” method for connecting to your SharePoint site and adding a document. We can upload the document from the Fileupload control also, but here we will take the data from a byte array directly.

Our Complete web method will look like this.

[WebMethod]

public void UploadFileToDocmentLibrary()

{

    //Referring Top level sharepoint site

    //Change URI according to your sharepoint site

    using (SPSite sharePointtopLevelSite = new SPSite("http://localhost"))

    {

        //Will get Website collection inside top level site

        //Here my Toplevel site contains a website named test .

        //Change name according to your site settings

        SPWeb websiteCollection = sharePointtopLevelSite.AllWebs["test"];

        websiteCollection.AllowUnsafeUpdates = true;

        websiteCollection.Lists.IncludeRootFolder = true;

        //Will get List collection inside a website

        //Here my Toplevel site contains a List named tree .

        //Change name according to your site settings

        SPList docLibrary = websiteCollection.Lists["Tree"]; 

        //Here we are converting a Text to Byte Array

        //We can get byte array from Fileupload control of asp.net also

        //Add Reference to System.Text Namespace

        Byte[] contentArray = Encoding.ASCII.GetBytes("Hello Sharepoint.");

        // Uploading the file to SharePoint doclib

 SPFile file = websiteCollection.Files.Add

 (websiteCollection.Url.ToString() +"/" + docLibrary.Title.ToString()  + "/" + "SharePointTest.txt", contentArray); 

file.Update();

    }

}

Step 7: Run this application and Refresh your web page and you will get the file name ‘SharepointTest’ in your document library

About Author:

Sameer Kothari works in Systems Plus and actively contributes to technology. To read more interesting articles from him, please follow: http://samk2010.blogspot.in/