private void populateDatabaseData()
{
using (ClientDataEntities1 dc = new ClientDataEntities1())
{
gvData.DataSource = dc.ClientMasters.ToList();
gvData.DataBind();
}
}
protected void btnImportFromCSV_Click(object sender, EventArgs e)
{
if (FileUpload1.PostedFile.ContentType == "application/vnd.ms-excel" ||
FileUpload1.PostedFile.ContentType == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
{
try
{
string fileName = System.IO.Path.Combine(Server.MapPath("~/UploadDocuments"), Guid.NewGuid().ToString() + Path.GetExtension(FileUpload1.PostedFile.FileName));
FileUpload1.PostedFile.SaveAs(fileName);
string conString = "";
string ext = Path.GetExtension(FileUpload1.PostedFile.FileName);
if (ext.ToLower() == ".xls")
{
conString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\"";
}
else if (ext.ToLower() == ".xlsx")
{
conString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
}
string query = "Select [ClientID], [First_Name], [Last_Name], [Employer], [Title], [Phone_Number], [Zip] from [ClientList$]";
OleDbConnection con = new OleDbConnection(conString);
if (con.State == System.Data.ConnectionState.Closed)
{
con.Open();
}
OleDbCommand cmd = new OleDbCommand(query, con);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
da.Dispose();
con.Close();
con.Dispose();
// Update database data
using (ClientDataEntities1 dc = new ClientDataEntities1())
{
foreach (DataRow dr in ds.Tables[0].Rows)
{
string empID = dr["ClientID"].ToString();
var v = dc.ClientMasters.Where(a => a.ClientID.Equals(empID)).FirstOrDefault();
if (v != null)
{
v.First_Name = dr["First_Name"].ToString();
v.Last_Name = dr["Last_Name"].ToString();
v.Employer = dr["Employer"].ToString();
v.Title = dr["Title"].ToString();
v.Phone_Number = dr["Phone_Number"].ToString();
v.Zip = dr["Zip"].ToString();
}
else
{
dc.ClientMasters.Add(new ClientMaster
{
ClientID = dr["ClientID"].ToString(),
First_Name = dr["First_Name"].ToString(),
Last_Name = dr["Last_Name"].ToString(),
Employer = dr["Employer"].ToString(),
Title = dr["Title"].ToString(),
Phone_Number = dr["Phone_Number"].ToString(),
Zip = dr["Zip"].ToString(),
});
}
}
dc.SaveChanges();
// populate updated data
populateDatabaseData();
lblMessage.Text = "Excel file has been imported Successfully!";
}
}
catch (Exception)
{
throw;
}
}
}
