Multiple Upload File Programmatically Using GridView

This is how to upload multiple file in SharePoint 2010. When user clicks upload button, the uploaded files will be put in windows temporary folder and listed in GridView. When user clicks submit button then the files will be send to SharePoint library. Refer to this solution from Mohan.

1 2	<asp:GridView ID="dgdUpload" runat="server" AutoGenerateDeleteButton="True" OnRowDeleting="dgdUpload_RowDeleting" PagerStyle-CssClass="pgr" AlternatingRowStyle-CssClass="alt" CssClass="mGrid">  </asp:GridView>

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using System; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web; using System.Text; using System.Data; using System.IO; using Microsoft.SharePoint;   namespace EcoMultipleFile.MultipleFileUpload {  public partial class MultipleFileUploadUserControl : UserControl  {   private string fileName = "";  private double length;  int DocNo = 0;  DataTable dt;//datatable use for multiple file upload  DataRow dr;//datarow use for multiple file upload  DataColumn dc;//datacolumn use for multiple file upload  protected void Page_Load(object sender, EventArgs e)  {  }  protected void dgdUpload_RowDeleting(object sender, GridViewDeleteEventArgs e)  {   int recordToDelete = e.RowIndex;  dt = (DataTable)ViewState["Files"];  int cn = dt.Rows.Count;  dt.Rows.RemoveAt(recordToDelete);  dt.AcceptChanges();  ViewState["Files"] = dt;  this.dgdUpload.DataSource = dt;  this.dgdUpload.DataBind();  lblMessage.Text = " File successfully being deleted";  }   private void AddMoreColumns()  {  dt = new DataTable("Files");  //dc = new DataColumn("No", Type.GetType("System.Int16"));  //dt.Columns.Add(dc);  dc = new DataColumn("FileName", Type.GetType("System.String"));  dt.Columns.Add(dc);  dc = new DataColumn("FilePath", Type.GetType("System.String"));  dt.Columns.Add(dc);  ViewState["Files"] = dt;   }   protected void Submit_Click(object sender, EventArgs e)  {    //Get the Site collection  using (SPSite oSite = new SPSite(SPContext.Current.Web.Url))  {  //Open the Root web  using (SPWeb oWeb = oSite.OpenWeb())  {  dt = (DataTable)ViewState["Files"];  int _dtcnt = dt.Rows.Count;  string strDate = "";  foreach (DataRow dr in dt.Rows)  {   strDate = System.DateTime.Now.Date.TimeOfDay.ToString();  /*** Simple File Upload ********/  // Read the file from the stream into the byte array  string strFilepath = dr["FilePath"].ToString();  string fileName1 = dr["FileName"].ToString();   FileStream fs = File.OpenRead(strFilepath);  byte[] FileContent = new byte[fs.Length];  fs.Read(FileContent, 0, Convert.ToInt32(fs.Length));  fs.Close();   //Get the documents Library  SPList DocLib = oWeb.Lists["Shared Documents"];   /*** If you want to add inside a folder*******/   SPFolder SubFolder = DocLib.RootFolder.SubFolders["TestFolder"];    //Add the file to the sub-folder  SPFile file = SubFolder.Files.Add(SubFolder.Url + "/" + fileName1, FileContent, true);  SubFolder.Update();   //If you want to Update the Meta data column say "Project A"  SPListItem item = DocLib.Items[file.UniqueId];  item["Project Title"] = TxtProjectName.Text;  item.Update();   }   LblSubmit.Text = "Sucessfully Submited";  }  }  }   protected void btnUpload_Click(object sender, EventArgs e)  {  fileName = System.IO.Path.GetFileName(FileUpload1.PostedFile.FileName);  if (fileName != "")  {   string _fileTime = DateTime.Now.ToFileTime().ToString();  string _fileorgPath = System.IO.Path.GetFullPath(FileUpload1.PostedFile.FileName);  string _newfilePath = _fileTime + "~" + fileName;  length = (FileUpload1.PostedFile.InputStream.Length) / 1024;  string tempFolder = Environment.GetEnvironmentVariable("TEMP");  string _filepath = tempFolder + _newfilePath;  FileUpload1.PostedFile.SaveAs(_filepath);   AddRow(fileName, _filepath, DocNo, true);  DocNo = DocNo + 1;  lblMessage.Text = "Successfully Added in List";  }   else  {  lblMessage.Text = "Select a File";  return;  }  }  private void AddRow(string file, string path, int ID, Boolean bolCheckForfiles)  {   Boolean bolAddRow = true;    dt = (DataTable)ViewState["Files"];  if (dt == null)  {  AddMoreColumns();  }  if (bolCheckForfiles)  {  if (dt.Rows.Count > 0)  {  foreach (DataRow drExistingrow in dt.Rows)  {  if (drExistingrow["FileName"].ToString() == file)  {  bolAddRow = false;  }  }  }  }  if (bolAddRow)  {  dr = dt.NewRow();  dr["FileName"] = file;  dr["FilePath"] = path;  dt.Rows.Add(dr);  ViewState["Files"] = dt;  dgdUpload.DataSource = dt;  dgdUpload.DataBind();//bind in grid  }  else  {  lblMessage.Visible = true;  lblMessage.Text = "Same File Name already exists!!!";  }  }   }   }

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