Reading data from CSV file and insert to SQL using vb.net - sql

Question

Hi i have test folder in that daily we copy one csv file we dont use any code to copy file we just drag and drop from local. CSV file have 11 columns but i want only 3 columns data in sql. so i created 3 columns in sql. My aim is to read file from folder and insert those 3 columns data to sql. I will run the task daily using task scheduler if file found in folder it need to import data to sql

Answer 1

This will do it for you. Simply choose the fields (columns) you want to load.
Protected Sub uploadButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles uploadButton.Click
' declare CsvDataReader object which will act as a source for data for SqlBulkCopy
Using csvData = New CsvDataReader(new StreamReader(fileUpload.PostedFile.InputStream, True))
' will read in first record as a header row and
' name columns based on the values in the header row
csvData.Settings.HasHeaders = True
' must define data types to use while parsing data
csvData.Columns.Add("varchar") ' First
csvData.Columns.Add("varchar") ' Last
csvData.Columns.Add("datetime") ' Date
csvData.Columns.Add("money") ' Amount
' declare SqlBulkCopy object which will do the work of bringing in data from
' CsvDataReader object, connecting to SQL Server, and handling all mapping
' of source data to destination table.
Using bulkCopy = New SqlBulkCopy("Data Source=.;Initial Catalog=Test;User ID=sa;Password=")
' set the name of the destination table that data will be inserted into.
' table must already exist.
bulkCopy.DestinationTableName = "Customer"
' mappings required because we're skipping the customer_id column
' and letting SQL Server handle auto incrementing of primary key.
' mappings not required if order of columns is exactly the same
' as destination table definition. here we use source column names that
' are defined in header row in file.
bulkCopy.ColumnMappings.Add("First", "first_name") ' map First to first_name
bulkCopy.ColumnMappings.Add("Last", "last_name") ' map Last to last_name
bulkCopy.ColumnMappings.Add("Date", "first_sale") ' map Date to first_sale
bulkCopy.ColumnMappings.Add("Amount", "sale_amount") ' map Amount to sale_amount
' call WriteToServer which starts import
bulkCopy.WriteToServer(csvData)
End Using ' dispose of SqlBulkCopy object
End Using ' dispose of CsvDataReader object
End Sub ' end uploadButton_Click