WebAug 27, 2024 · VB.NET: csv += cell.Value.ToString().Replace(",", ";") & ","c I am not sure what it means, except for at the end there are no Nulls in the data. Can someone please tell me how to get this to work, or if you have a better solution please le me know. Thank you VB.NET: 'Build the CSV file data as a Comma separated string. WebApr 16, 2014 · how to read .csv excel format file in vb.net Public Function GetCSVData () As System.Data.DataTable Dim dtFormB As New System.Data.DataTable Dim hasHeaders As Boolean = False Dim HDR As String = If (hasHeaders, "Yes", "No") Dim strConn As String Dim filePath As String 'filePath = g_strFileName + "\" + "FormB.xls"
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WebFeb 23, 2014 · Try and measure three separate scenarios - just reading from the database (measure separately the query ( ExecuteReader () and first Read () and then reading the other rows - because it might be that most of the time is spending to initially execute the query, not to iterate through the data), just writing to the file (dummy data) and then … WebNov 6, 2014 · 2. I use this code in vb.net for reading in csv files: filename = TextBox1.Text FileOpen (1, filename, OpenMode.Input) 'first row contains header information, therefore read it in, but ignore it dummy = LineInput (1) While Not EOF (1) Input (1, dialcode) Input … shari clevenger
Reading CSV files and inserting in a SQL database in VB.Net
WebSep 15, 2024 · Procedure To write text to a file Use the WriteAllText method to write text to a file, specifying the file and text to be written. This example writes the line "This is new text." to the file named test.txt, appending the text to any existing text in the file. VB Copy WebJan 28, 2009 · You can do this through custom code by reading the entire file into a dataset and then writing it back out with an overwrite when all editing is done. But as with many common needs in .NET development... it has been done before. I suggerst trying out a free open-source library, File Helpers, which is designed for just what you are doing... WebSep 15, 2024 · VB testReader.SetFieldWidths (5, 10, 11, -1) testReader.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.FixedWidth Once the format is defined, you can loop through the file, using the ReadFields method to process each line in turn. If a field does not match the specified format, a MalformedLineException exception is thrown. sharicks deck alf plant city