Soporte en OC carar lisado con gem box

OC/OC.aspx.vb

@@ -4,6 +4,7 @@ Option Strict On
 Imports System.Data
 Imports Extensiones
 Imports System.IO
+Imports GemBox.Spreadsheet
 
 Partial Class OC
     Inherits ClsPaginas
@@ -5831,31 +5832,80 @@ Partial Class OC
         End If
     End Sub
 
+    Private Function ReadExcelFile(ByVal flatFilePath As String, ByVal firstRowHasHeaders As Boolean) As DataTable
+        SpreadsheetInfo.SetLicense(ModExtensiones.SerialGemBoxSpreadsheet)
+        Dim excelFile As ExcelFile = ExcelFile.Load(flatFilePath)
+
+        Dim unnamed As Integer = 0
+        Dim cols As Integer
+        Dim columns As String()
+        Dim curRow As Integer = 0
+        Dim curCol As Integer = 0
+        Dim dataTable As DataTable = New DataTable()
+        Dim worksheet As ExcelWorksheet = excelFile.Worksheets(0)
+
+        For cols = 0 To worksheet.Rows(0).AllocatedCells.Count - 1
+
+            If firstRowHasHeaders Then
+
+                If worksheet.Rows(0).Cells(cols).Value IsNot Nothing Then
+                    dataTable.Columns.Add(worksheet.Rows(0).Cells(cols).Value.ToString())
+                Else
+                    dataTable.Columns.Add("Unnamed Column " & (System.Threading.Interlocked.Increment(unnamed)))
+                End If
+
+                curRow = 1
+            Else
+                dataTable.Columns.Add("Column " & (cols + 1))
+            End If
+        Next
+
+        While curRow < worksheet.Rows.Count
+            columns = New String(cols - 1) {}
+
+            For curCol = 0 To cols - 1
+
+                If worksheet.Rows(curRow).Cells(curCol).Value Is Nothing Then
+                    columns(curCol) = ""
+                Else
+                    columns(curCol) = worksheet.Rows(curRow).Cells(curCol).Value.ToString()
+                End If
+            Next
+
+            dataTable.Rows.Add(columns)
+            curRow += 1
+        End While
+
+        Return dataTable
+    End Function
+
     Private Sub CargarArchivo(Ruta As String, FileName As String, Tipo As String)
 
         Dim dt As New DataTable
-        Dim Conexion As Odbc.OdbcConnection = Nothing
+        dt = ReadExcelFile(Ruta + FileName, True)
         Dim ErrorArchivo = False
-        Try
-            Select Case Tipo
-                Case "EXCEL"
-                    Conexion = New Odbc.OdbcConnection("Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=" + Ruta + FileName + ";")
-                    Conexion.Open()
-                    Dim cmd = Conexion.CreateCommand()
-                    cmd.CommandType = CommandType.Text
-                    cmd.CommandText = "SELECT * FROM [Hoja1$]"
-                    Dim DataAdapter = New Odbc.OdbcDataAdapter(cmd)
-                    DataAdapter.Fill(dt)
-                Case Else
-                    Alert("El archivo no tiene el formato correcto", TipoMensaje.MsgError)
-                    Exit Sub
-            End Select
-        Catch ex As Exception
-            ErrorArchivo = True
-            OnError("Ocurrio un error al leer el archivo <br/>" & ex.Message, ex)
-        End Try
-        Conexion.Close()
-        If Not ErrorArchivo Then
+
+        'Dim Conexion As Odbc.OdbcConnection = Nothing
+        'Try
+        '    Select Case Tipo
+        '        Case "EXCEL"
+        '            Conexion = New Odbc.OdbcConnection("Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=" + Ruta + FileName + ";")
+        '            Conexion.Open()
+        '            Dim cmd = Conexion.CreateCommand()
+        '            cmd.CommandType = CommandType.Text
+        '            cmd.CommandText = "SELECT * FROM [Hoja1$]"
+        '            Dim DataAdapter = New Odbc.OdbcDataAdapter(cmd)
+        '            DataAdapter.Fill(dt)
+        '        Case Else
+        '            Alert("El archivo no tiene el formato correcto", TipoMensaje.MsgError)
+        '            Exit Sub
+        '    End Select
+        'Catch ex As Exception
+        '    ErrorArchivo = True
+        '    OnError("Ocurrio un error al leer el archivo <br/>" & ex.Message, ex)
+        'End Try
+        'Conexion.Close()
+        If Not ErrorArchivo AndAlso dt IsNot Nothing Then
             If Not dt.Columns(0).ColumnName = "Cantidad" Then
                 Alert("El nombre de la primera columna debe ser 'Cantidad'.Favor de corregirlo", TipoMensaje.MsgError)
                 Exit Sub