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upload / dowload files to azure

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User1717218719 posted

I have the following code which uploads files to the local host then allows user to download the file. This code workes perfectly however what I now want to be able to do is link this to my azure storage account. if a file is uploaded to this website I want it to auto upload to azure. How would I go about altering this code any help is appreciated. Thanks

Note my data source is a table in Microsoft sql.

Partial Class _Default
  Inherits System.Web.UI.Page

  Protected Sub btnAddNew_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddNew.Click
    Response.Redirect("~/UploadFile.aspx")
  End Sub

  Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound

    Select Case (e.Row.RowType)
      Case DataControlRowType.DataRow
        Dim myFileInfo As FileInfo = CType(e.Row.DataItem, FileInfo)

        Select Case myFileInfo.ContentType.ToLower()
          Case "image/pjpeg"          ' .jpg files
          Case "image/gif"            ' .gif files
          Case "application/msword"   ' .doc files
          Case "text/plain"           ' .txt files 
            ' Do nothing. When the row contains a viewable type, 
            ' we want the View link to be enabled.

          Case Else
            ' Find the View link and disable it.
            Dim myLink As HyperLink = CType(e.Row.FindControl("lnkView"), HyperLink)
            myLink.Enabled = False
        End Select

    End Select

  End Sub
End Class

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>Uploaded Files</title>
</head>
<body>
  <form id="form1" runat="server">
    <div>
      <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="odsFiles" OnRowDataBound="GridView1_RowDataBound">
        <Columns>
          <asp:BoundField DataField="Id" HeaderText="Id" SortExpression="Id" />
          <asp:BoundField DataField="OriginalName" HeaderText="OriginalName" SortExpression="OriginalName" />
          <asp:BoundField DataField="ContentType" HeaderText="ContentType" SortExpression="ContentType" />
          <asp:BoundField DataField="DateCreated" HeaderText="DateCreated" SortExpression="DateCreated" />
          <asp:HyperLinkField DataNavigateUrlFields="Id" DataNavigateUrlFormatString="~/DownloadFile.aspx?Id={0}" HeaderText="Download" Text="Download" />
          <asp:TemplateField HeaderText="View">
            <ItemTemplate>
              <asp:HyperLink ID="lnkView" runat="server" NavigateUrl='<%# Eval("Id", "~/ViewFile.aspx?Id={0}") %>' Text="View"></asp:HyperLink>
            </ItemTemplate>
          </asp:TemplateField>
        </Columns>
      </asp:GridView>
      <br />
      <br />
      <asp:Button ID="btnAddNew" runat="server" OnClick="btnAddNew_Click" Text="Add New File" /><br />
      <br />
      <br />
      <asp:ObjectDataSource ID="odsFiles" runat="server" SelectMethod="GetList" TypeName="FileInfo" />
    </div>
  </form>
</body>
</html>

Wednesday, January 15, 2020 9:49 AM

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User281315223 posted

Assuming that you already have a Blob Storage Container configured in Azure (with the appropriate connection string), then you can just use a BlobServiceClient to handle uploading your file as a stream to your container:

// Create a BlobServiceClient object which will be used to create a container client BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString); // Read your file (after casting from your example) var file = e.Row.DataItem as FileInfo; using(FileStream stream = file.OpenRead()) { // Upload your file blobServiceClient.UploadAsync(stream); }

You can find a complete tutorial to handle this here, but hopefully this should get the basic idea. Additionally, if you need to convert between C# and Visual Basic (as most examples will be in C#), you can use this converter here.
- Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
Thursday, January 16, 2020 2:13 AM

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upload / dowload files to azure

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