upload excel file

i tried to upload an excel file using the following code:

myWebClient.UploadFile("\\146.51.237.157 test\FromArray.xls", "POST", "C:\FromArray.xls")

The upload was successful but the content was changed into ASCII characters.

Please give me some advise. Thanks.

I use this:

VB Code:

Imports System.Data
. . .
 Dim cnnString As String = _
           "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=H:\Excel\test.xls;Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1"""
        Dim cnn As New OleDb.OleDbConnection
        Dim cmd As New OleDb.OleDbCommand
        Dim da As New OleDb.OleDbDataAdapter
        Dim ds As New DataSet
        Try
            cnn.ConnectionString = cnnString
            cnn.Open()
            cmd = cnn.CreateCommand
            cmd.CommandText = "SELECT * FROM [Sheet1$]"
            da.SelectCommand = cmd
            da.Fill(ds, "ExcelSheet")
 
            DataGrid1.DataSource = ds.Tables("ExcelSheet")
 
        Catch oEx As Exception
            Console.WriteLine(oEx.ToString)
        Finally
            cnn.Close()
        End Try

Thank you for your quick response.
We are using the WebClient class. Do you know how to upload using this class? The upload is actually successfull. The only problem is that the contents is changing during the process. This is my code:

Dim myWebClient As New WebClient

Dim strLocalFile As String = txtUploadFile.Text
Dim strServerPath As String = "\\146.51.237.157\test\"
Dim strFilename As String = fnGetFileName(strLocalFile)

Dim strServerLocation As Byte() = myWebClient.UploadFile(strServerPath + strFilename, "POST", strLocalFile)

Thank you very much for your help.