SharePoint Journey: Programmatically uploading multiple files to Custom sharepoint list in 2007

Introduction:

A custom SharePoint list can be configured to collect any type of data and SharePoint automatically generates the forms for adding new items, editing items and viewing items.

Team Web site comes with a built-in List Calendar, Task, which is listed on the Quick Launch bar. A new custom list has to be created for storing the files.

Steps creating custom list:

Custom list created

Custom Column Creation

While creating custom list Named as FileList default column will create Title.
Modify column name Title as Filename.
Create one more column as Filedate.
Create one more column as FileSize.

Implementation of Web part

The files are added to the custom GridView (list) in web part level using browse file upload button. You can add and delete multiple files in this list. Finally all the files are uploaded in custom share point list Filelist using submit button in webpart.

The steps to create a web part

Make sure installed VS.net 2005.
Make sure installed Web part Project Library in your system.
Start VS.Net 2005 and create a new project.
Select Project Type as Visual C#-->SharePoint.
Visual Studio Installed templates as Web Part.
Change Name as MultipleUploadWebpart.
Change Location as e:\ MultipleUploadWebpart.
Change Solution name as FileUploadWebPart.

Using the Render method

The Web part base class seals the Render method of System.Web.UI.Control because the Web Part infrastructure needs to control rendering the contents of a Web Part. For this reason, custom Web Parts must override the Render method of the Web part base class.

The Complete Web part Code

#region File Information

///<summary>

/// ------------------------------------------------------------------------------------------------------

/// Namespace : MultipleFileUploadWebPart

///

/// Purpose : To Create Webpart to programmatically upload MultipleFiles to Custom SharePoint List

///

/// Change History

/// -------------------------------------------------------------------------------------------------------

/// Date Edit Author Comment

/// -------------+--------+-------------------------------------------------------------------------------

/// 12-July-2007 [100] Saravanan_Gajendran Create Webpart

/// -------------+--------+-------------------------------------------------------------------------------

///</summary>

using System;

using System.Runtime.InteropServices;

using System.Web.UI;

using System.Web;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Serialization;

using System.Data;

using System.IO;

using System.Text;

using System.Web.SessionState;

using Microsoft.SharePoint;

using Microsoft.SharePoint.WebControls;

using Microsoft.SharePoint.WebPartPages;

namespace MultipleUploadWebpart

{

[Guid("2115a405-ff46-4040-8370-6e4fcb7b9194")]

public class MultipleUploadWebpart : System.Web.UI.WebControls.WebParts.WebPart

{

#region Variables

private HtmlInputFile inputFile;

private Button btnUpload;

private Label lblMessage;

private GridView dgdUpload;

private string fileName = "";

private Button btnSubmit;

private HyperLinkField hlnkFileName;

private BoundField bndFileSize;

private BoundField bndFileKb;

private ButtonColumn btnclmDelete;

private CommandField cmdDelete;

private double length;

byte[] contents;

DataTable dt;//datatable use for multiple file upload

DataRow dr;//datarow use for multiple file upload

DataColumn dc;//datacolumn use for multiple file upload

double count = 0;//count of file size

#endregion

#region Create Child Control

protected override void CreateChildControls()

{

#region inputfile

this.inputFile = new HtmlInputFile();

this.inputFile.ID = "_fileUpload";

#endregion

#region message label

this.lblMessage = new Label();

this.lblMessage.ID = "_lblMessage";

               this.lblMessage.Text = "";
               #endregion

               #region  Button

this.btnUpload = new Button();

this.btnUpload.ID = "_btnUploadUpload";

this.btnUpload.Text = "Upload";

this.btnUpload.Click += new EventHandler(btnUploadUploadClick);

this.btnSubmit = new Button();

this.btnSubmit.ID = "_btnSubmit";

this.btnSubmit.Text = "Submit";

this.btnSubmit.Click += new EventHandler(btnSubmit_Click);

#endregion

#region GridView

this.dgdUpload = new GridView();

this.hlnkFileName = new HyperLinkField();

this.hlnkFileName.DataTextField = "FileName";

this.hlnkFileName.DataNavigateUrlFormatString = "FilePath";

this.hlnkFileName.HeaderText = "FileName";

this.bndFileSize = new BoundField();

this.bndFileSize.HeaderText = "FileSize";

this.bndFileSize.DataField = "FileSize";

this.bndFileKb = new BoundField();

this.bndFileKb.HeaderText = "";

this.bndFileKb.DataField = "KB";

this.cmdDelete = new CommandField();

this.cmdDelete.HeaderText = "Delete";

this.cmdDelete.ButtonType = ButtonType.Link;

this.cmdDelete.InsertImageUrl = "delete.gif";

this.cmdDelete.DeleteText = "Delete";

this.cmdDelete.ShowDeleteButton = true;

this.dgdUpload.ID = "_dgdFileUpload";

this.dgdUpload.Columns.Add(hlnkFileName);

this.dgdUpload.Columns.Add(bndFileSize);

this.dgdUpload.Columns.Add(bndFileKb);

this.dgdUpload.Columns.Add(cmdDelete);

this.dgdUpload.AutoGenerateColumns = false;

this.dgdUpload.RowDeleting += new GridViewDeleteEventHandler
(dgdUpload_RowDeleting);

#endregion

#region Add Controls

this.Controls.Add(dgdUpload);

this.Controls.Add(inputFile);
this.Controls.Add(lblMessage);

this.Controls.Add(btnUpload);

this.Controls.Add(btnSubmit);

base.CreateChildControls();

#endregion

}

#endregion

#region RowDeleting

private void dgdUpload_RowDeleting(object sender, GridViewDeleteEventArgs e)

{

int recordToDelete= e.RowIndex;

dt = (DataTable)Page.Session["Files"];

int cn = dt.Rows.Count;

dt.Rows.RemoveAt(recordToDelete);

               dt.AcceptChanges();
               Page.Session["Files"] = dt;
               this.dgdUpload.DataSource = dt
               this.dgdUpload.DataBind();

}

#endregion

#region OnLoad

protected override void OnLoad(EventArgs e)

{

base.OnLoad(e);

}

#endregion

#region File in SharePoint List

private void btnSubmit_Click(object sender, EventArgs e)

{

SPWeb site = SPContext.Current.Web;

SPList list = site.Lists["FileList"];

SPListItem myNewItem ;

dt = (DataTable)Page.Session["Files"];

int _dtcnt = dt.Rows.Count;

string strDate="";

foreach (DataRow dr in dt.Rows)

{

strDate = System.DateTime.Now.Date.TimeOfDay.ToString();

myNewItem = list.Items.Add();

fileName = dr["Filename"].ToString();

string strFilepath= dr["FilePath"].ToString()

StreamReader sr = new StreamReader(strFilepath);

Stream fStream=sr.BaseStream ;

contents = new byte[fStream.Length];

fStream.Read(contents, 0, (int)fStream.Length);

fStream.Close();

myNewItem["Filename"] = dr["Filename"].ToString();

myNewItem["FileSize"] = dr["FileSize"].ToString();

myNewItem["Filedate"] = strDate;

myNewItem.Attachments.Add(fileName, contents);

myNewItem.Update();

System.IO.File.Delete(strFilepath);

}

lblMessage.Text = "Sucessfully Submited";

}

#endregion

#region Upload File Add in List

protected void btnUploadUploadClick(object sender, EventArgs e)

{

fileName = System.IO.Path.GetFileName(inputFile.PostedFile.FileName);

if (fileName != "")

{

string _fileTime = DateTime.Now.ToFileTime().ToString();

string _fileorgPath = System.IO.Path.GetFullPath
(inputFile.PostedFile.FileName);

string _newfilePath = _fileTime + "~" + fileName;

length = (inputFile.PostedFile.InputStream.Length) / 1024;

string tempFolder = Environment.GetEnvironmentVariable("TEMP");

string _filepath = tempFolder + _newfilePath;

inputFile.PostedFile.SaveAs(_filepath);

AddRow(fileName, _filepath, length);

lblMessage.Text = "Successfully Added in List";

}

else
{

lblMessage.Text="Select a File";

return;

}

#endregion

#region Render

protected override void Render(HtmlTextWriter writer)

{

// TODO: add custom rendering code here.

EnsureChildControls();

this.inputFile.RenderControl(writer);

this.btnUpload.RenderControl(writer);

this.lblMessage.RenderControl(writer);

this.dgdUpload.RenderControl(writer);

this.btnSubmit.RenderControl(writer);

}

#endregion

#region AddMoreRows for file upload

private void AddMoreColumns()

{

dt = new DataTable("Files");

dc = new DataColumn("FileName", Type.GetType("System.String"));

dt.Columns.Add(dc);

dc = new DataColumn("FilePath", Type.GetType("System.String"));

dt.Columns.Add(dc);

dc = new DataColumn("FileSize", Type.GetType("System.String"));

dt.Columns.Add(dc);

dc = new DataColumn("KB", Type.GetType("System.String"));

dt.Columns.Add(dc);

Page.Session["Files"] = dt;

}

#endregion

#region AddRow for file upload

private void AddRow(string file, string path, double length)

{

dt = (DataTable)Page.Session["Files"];

if (dt == null)

{

AddMoreColumns();

}

dr = dt.NewRow();

dr["FileName"] = file;

dr["FilePath"] = path;

dr["FileSize"] = Convert.ToString(length);

dr["KB"] = "KB";

dt.Rows.Add(dr);

Page.Session["Files"] = dt;

this.dgdUpload.DataSource = dt;

this.dgdUpload.DataBind();//bind in grid

}

#endregion

}
}

Deploy File Upload Web part in the share point server

Right click solution file then select properties.
Select Debug Start browser with URL selects your respective SharePoint Site.
Select Signing option.
Ensure the strong name key and sign the assembly check box.
Right Click properties select Deploy.
It is automatically deployed the web part in respective site.
Deploy will take care of .Stop IIS, Buliding solution, Restarting Solution, Creating GAC, Restarting IIS like that.
Multiple Upload Webpart is new one.
New MultipleUploadWebpart Web Part.

Events

1. Browse Button
It is used to browse and select the particular file.

2. Upload Button
It is used to upload file to the windows temp folder then list the files.

3. Submit Button
It is used to store all files in share point custom list.