SqlBulkCopy - Add rows along with additional values to database
ado.net asp.net c# sqlbulkcopy sql-server
Question
I am trying a code snippet that add excel data into sql database using SqlBulkCopy. The code snippet is as given below
OleDbConnection connection=null;
string FilePath="";
try
{
if (FileUpload1.HasFile)
{
FileUpload1.SaveAs(Server.MapPath("~/UploadedFolder/"+FileUpload1.FileName));
FilePath = Server.MapPath("~/UploadedFolder/"+FileUpload1.FileName);
}
string path = FilePath;
// Connection String to Excel Workbook
string excelConnectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=Excel 8.0", path);
connection = new OleDbConnection();
connection.ConnectionString = excelConnectionString;
OleDbCommand command = new OleDbCommand("select * from [Sheet1$]", connection);
connection.Open();
// Create DbDataReader to Data Worksheet
DbDataReader dr = command.ExecuteReader();
// SQL Server Connection String
string sqlConnectionString = @"Data Source=sample;Initial Catalog=ExcelImport;User ID=sample;Password=sample";
// Bulk Copy to SQL Server
SqlBulkCopy bulkInsert = new SqlBulkCopy(sqlConnectionString);
bulkInsert.DestinationTableName = "Customer_Table";
bulkInsert.WriteToServer(dr);
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
finally
{
connection.Close();
Array.ForEach(Directory.GetFiles(Server.MapPath("~/UploadedFolder/")), File.Delete);
}This add the data from excel file to sql server database table. But my requirement is that I need to add the values of excel sheet plus additionally my own values say autogenerated studentid.
So my question is how I will add new values (say studentid, batchcode etc) along with values that read from excel. And these values to be added to each row of excel data.
Example:-
excel contains following columns
CustomerID,City,Country,PostalCode
Now I need to add values to sql server by adding some new columns as
StudentID,CustomerID,BatchCode,City,Country,Email,PostalCode
How can I do it
Please help
Accepted Answer
You could do the following:
- load the excel data into a data table,
- Add the remaining columns to the data table,
- Set new column values
- SqlBulkCopy the data table into SQL Server.
Something like this:
DbDataReader dr = command.ExecuteReader();
DataTable table = new DataTable("Customers");
table.Load(dr);
table.Columns.Add("StudentId", typeof(int));
table.Columns.Add("BatchCode", typeof(string));
table.Columns.Add("Email", typeof(string));
foreach (DataRow row in table.Rows)
{
row["StudentId"] = GetStudentId(row);
row["BatchCode"] = GetBatchCode(row);
row["Email"] = GetEmail(row);
}
// SQL Server Connection String
string sqlConnectionString = @"Data Source=sample;Initial Catalog=ExcelImport;User ID=sample;Password=sample";
// Bulk Copy to SQL Server
SqlBulkCopy bulkInsert = new SqlBulkCopy(sqlConnectionString);
bulkInsert.DestinationTableName = "Customer_Table";
bulkInsert.WriteToServer(table);