how to insert data from textbox to excel using vb.net? - vb.net

Question

I'm stuck here, I want to insert the data from 5 textbox to existing excel file in columns. I found code but its inserting by rows. I have below a code that finds the last non empty row and from that row I want to move to the next row and insert data there, for example last row is A2, I want to insert new data to A3, B3, C3, D3, E3.
I can't get the right loop for this.
Dim lRow As Long = 0
Call OpenExcelFile("C:\Users\PB\Desktop\BookRecords.xlsx", 1)
With xlWorkSheet
If EXL.WorksheetFunction.CountA(.Cells) <> 0 Then
lRow = .Cells.Find(What:="*", _
After:=.Range("A2"), _
LookAt:=Excel.XlLookAt.xlPart, _
LookIn:=Excel.XlFindLookIn.xlFormulas, _
SearchOrder:=Excel.XlSearchOrder.xlByRows, _
SearchDirection:=Excel.XlSearchDirection.xlPrevious, _
MatchCase:=False).Row
Else
lRow = 1
End If
lRow += 1
End With
MessageBox.Show("The last row in Sheet1 which has data is " & lRow)
Dim j As Integer
j = 3
For i As Integer = j To 8
xlWorkSheet.Range(xlWorkSheet.Cells(lRow + 1, j).item).Value = txtTitle.Text
xlWorkSheet.Range(xlWorkSheet.Cells(lRow + 1, j).item).Value = txtAuthor.Text
xlWorkSheet.Range(xlWorkSheet.Cells(lRow + 1, j).item).Value = txtEdition.Text
xlWorkSheet.Range(xlWorkSheet.Cells(lRow + 1, j).item).Value = txtPublisher.Text
xlWorkSheet.Range(xlWorkSheet.Cells(lRow + 1, j).item).Value = txtISBN.Text
Next
j += 1
Call SaveAndCloseExcelSub()

Answer 1

Does this help:
Dim j As Integer
j = 3
For i As Integer = j To 8
MsgBox("Cell column: " & ColumnNumberToName(i))
Next
Code to convert numbers to Excel Column Names (A-Z, AA, etc):
Public Shared Function ColumnNumberToName(columnNumber As Int32) As String
Dim dividend As Int32 = columnNumber
Dim columnName As [String] = [String].Empty
Dim modulo As Int32
While dividend > 0
modulo = (dividend - 1) Mod 26
columnName = Convert.ToChar(65 + modulo).ToString() + columnName
dividend = DirectCast(((dividend - modulo) / 26), Int32)
End While
Return columnName
End Function
Public Shared Function ColumnNameToNumber(columnName As [String]) As Int32
If [String].IsNullOrEmpty(columnName) Then
Throw New ArgumentNullException("columnName")
End If
Dim characters As Char() = columnName.ToUpperInvariant().ToCharArray()
Dim sum As Int32 = 0
Dim i As Int32 = 0
While i < characters.Length
sum *= 26
sum += (characters(i) - "A"C + 1)
System.Math.Max(System.Threading.Interlocked.Increment(i),i - 1)
End While
Return sum
End Function

Answer 2

As it is, all your values are being written to the same cell; then you move down a row and do it again. Cells are addressed as (row, column) - so you need to change your code like this:
Dim j As Integer
j = 3
For i As Integer = j To 8
xlWorkSheet.Cells(lRow + i, 1).Value = txtTitle.Text
xlWorkSheet.Cells(lRow + i, 2).Value = txtAuthor.Text
xlWorkSheet.Cells(lRow + i, 3).Value = txtEdition.Text
xlWorkSheet.Cells(lRow + i, 4).Value = txtPublisher.Text
xlWorkSheet.Cells(lRow + i, 5).Value = txtISBN.Text
Next
Not sure if you need to start with i = 3 if you add lRow to it but I'm sure you can work that out.
If you want the order reversed, do this (this example copies only one lot of text... I am beginning to suspect there is no need for the loop)
dim i as Integer
i = 1; ' if you want column A
With xlWorkSheet
.Cells(lRow , i).Value = txtTitle.Text
.Cells(lRow + 1, i).Value = txtAuthor.Text
.Cells(lRow + 2, i).Value = txtEdition.Text
.Cells(lRow + 3, i).value = txtPublisher.Text
.Cells(lRow + 4, i).Value = txtISBN.Text
End With