Using A Local file path in a Streamwriter object ASP.Net
- by Nick LaMarca
I am trying to create a csv file of some data. I have wrote a function that successfully does this....
Private Sub CreateCSVFile(ByVal dt As DataTable, ByVal strFilePath As String)
Dim sw As New StreamWriter(strFilePath, False)
''# First we will write the headers.
''EDataTable dt = m_dsProducts.Tables[0];
Dim iColCount As Integer = dt.Columns.Count
For i As Integer = 0 To iColCount - 1
sw.Write(dt.Columns(i))
If i < iColCount - 1 Then
sw.Write(",")
End If
Next
sw.Write(sw.NewLine)
''# Now write all the rows.
For Each dr As DataRow In dt.Rows
For i As Integer = 0 To iColCount - 1
If Not Convert.IsDBNull(dr(i)) Then
sw.Write(dr(i).ToString())
End If
If i < iColCount - 1 Then
sw.Write(",")
End If
Next
sw.Write(sw.NewLine)
Next
sw.Close()
End Sub
The problem is I am not using the streamwriter object correctly for what I trying to accomplish. Since this is an asp.net I need the user to pick a local filepath to put the file on. If I pass any path to this function its gonna try to write it to the directory specified on the server where the code is. I would like this to popup and let the user select a place on their local machine to put the file....
Dim exData As Byte() = File.ReadAllBytes(Server.MapPath(eio))
File.Delete(Server.MapPath(eio))
Response.AddHeader("content-disposition", String.Format("attachment; filename={0}", fn))
Response.ContentType = "application/x-msexcel"
Response.BinaryWrite(exData)
Response.Flush()
Response.End()
I am calling the first function in code like this...
Dim emplTable As DataTable = SiteAccess.DownloadEmployee_H()
CreateCSVFile(emplTable, "C:\\EmplTable.csv")
Where I dont want to have specify the file loaction (because this will put the file on the server and not on a client machine) but rather let the user select the location on their client machine.
Can someone help me put this together? Thanks in advance.
