VB6 - Transfer data from 1 grid to another

Hello all

I have this code bellow that transfer data from 1 grid to another.

The issue i have is with this part of the code:

    For z = MSHFlexGrid2.Rows - 1 To 0 Step -1
        For zz = 1 To MSHFlexGrid2.Rows - 1
            If MSHFlexGrid4.TextMatrix(z, 0) = MSHFlexGrid2.TextMatrix(zz, 0) Then

                MSHFlexGrid4.TextMatrix(z, 2) = MSHFlexGrid2.TextMatrix(zz, 1)
                MSHFlexGrid4.Row = z
                MSHFlexGrid4.Col = 1
                MSHFlexGrid4.CellBackColor = &H80FF&

            End If
        Next zz
    Next z

The Preferred carrier column from MSHFlexgrid4 should not have duplicate value. If it was transferred once, it should not show twice based on the DOOR letter.

Then, if for example, in grid 4, i only have 1 door B but in grid 2, i have 4 B door, then it should add a new row, add Door B in column 0 and add the value in column Preferred carrier column from MSHFlexgrid4.



How can i do that please?

Thanks again for your help



FULL CODE:

    Dim i As Integer

    For i = 0 To MSHFlexGrid3.Rows - 1
        If MSHFlexGrid3.TextMatrix(i, 0) <> "" Then
            MSHFlexGrid4.TextMatrix(i, 0) = MSHFlexGrid3.TextMatrix(i, 0)
            MSHFlexGrid4.TextMatrix(i, 1) = MSHFlexGrid3.TextMatrix(i, 1)
            MSHFlexGrid4.Rows = MSHFlexGrid4.Rows + 1
        End If
    Next i


    'Delete empty row
    Dim j As Integer
    Dim k As Integer
    Dim sSQL As String
    For k = MSHFlexGrid4.Rows - 1 To 1 Step -1
        sSQL = ""
        For j = 1 To MSHFlexGrid4.Cols - 1
            sSQL = sSQL & Trim(MSHFlexGrid4.TextMatrix(k, j))
        Next
        If Trim(sSQL) = "" Then
            MSHFlexGrid4.RemoveItem k
        End If
        If MSHFlexGrid4.Rows <= 1 Then Exit For
    Next


    Dim z As Integer
    Dim zz As Integer
    MSHFlexGrid4.Cols = MSHFlexGrid4.Cols + 1
    MSHFlexGrid4.TextMatrix(0, 2) = "Preferred Carrier"


    For z = MSHFlexGrid2.Rows - 1 To 0 Step -1
        For zz = 1 To MSHFlexGrid2.Rows - 1
            If MSHFlexGrid4.TextMatrix(z, 0) = MSHFlexGrid2.TextMatrix(zz, 0) Then

                MSHFlexGrid4.TextMatrix(z, 2) = MSHFlexGrid2.TextMatrix(zz, 1)
                MSHFlexGrid4.Row = z
                MSHFlexGrid4.Col = 1
                MSHFlexGrid4.CellBackColor = &H80FF&

            End If
        Next zz
    Next z