Asp.net upload and delete file code is implemented in the form of vb. We need to allow the upload of files to the Web server so that new content can be loaded faster and more easily over FTP.
We have used the vb version to upload and delete file code in asp.net,
This tutorial will show you how to upload files to the network server, and use the GridView control to delete files as well. VB version.
Often, we need to allow the upload of files to the Web server so that new content can be loaded more quickly and more easily over FTP. ASP. NET makes this easier for us to do this, but what changes will happen to the files we want to delete from the network server? In ASP. NET, of course, there is an answer to this question. You can use the GridView to display files in a directory and allow users to delete these files.
First, we need the following Assembly reference:
Import System. IO
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We need to add a FileUpload control and a GridView:
<Form id = "form1" runat = "server">
<Asp: Label ID = "labelStatus" runat = "server"> </asp: Label> <br/>
<Asp: FileUpload ID = "FileUpload1" runat = "server"/> <br/>
<Asp: Button ID = "Button1" runat = "server" Text = "Upload" OnClick = "button#click"/> <br/>
<Asp: GridView ID = "GridView1" runat = "server" DataSource = "<% # GetUploadList () %>" OnRowDeleting = "GridView1_RowDeleting" AutoGenerateColumns = "False">
<Columns>
<Asp: TemplateField HeaderText = "Uploaded File"> <ItemStyle HorizontalAlign = "Center" Width = "70%"/>
<ItemTemplate>
<Asp: HyperLinkID = "FileLink"
NavigateUrl = '<% # "media/ul/" + Container. DataItem. ToString () %>'
Text = '<% # Container. DataItem. ToString () %>'
Runat = "server" Target = "_ blank"/> </ItemTemplate> </asp: TemplateField>
<Asp: TemplateField HeaderText = "Delete? "> <ItemStyle HorizontalAlign =" Center "Width =" 30% "/>
<ItemTemplate>
<Asp: linkButton ID = "LinkButton1" runat = "server" CausesValidation = "False" CommandName = "Delete" OnClientClick = 'Return confirm ("Are you sure you want to delete this entry? ");'
Text = "Delete? "/> </ItemTemplate> </asp: TemplateField>
</Columns>
</Asp: GridView>
</Form>
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Code hiding looks like this:
Imports System. IO
Partial Class _ Default
Inherits System. Web. UI. Page
Protected Sub Page_Load (ByVal sender As Object, ByVal e As System. EventArgs) Handles Me. Load
End Sub
Protected Overrides Sub OnLoad (ByVal e As System. EventArgs) MyBase. OnLoad (e)
If (Not IsPostBack) ThenGridView1.DataBind () End IfEnd Sub
Protected Function GetUploadList () As String () Dim folder As String = Server. mapPath ("/media/ul ")
Dim files () As String = Directory. GetFiles (folder)
Dim fileNames (files. Length-1) As String
Array. Sort (files)
For I As Integer = 0 To files. Length-1 fileNames (I) = Path. GetFileName (files (I) Next I
Return fileNamesEnd Function
Protected Sub UploadThisFile (ByVal upload As FileUpload) If upload. HasFile ThenDim theFileName As String = Path. Combine (Server. mapPath ("/media/ul"), upload. FileName)
Upload. SaveAs (theFileName)
LabelStatus. Text = "<B> File has been uploaded. </B>" End IfEnd Sub
Protected Sub GridView1_RowDeleting (ByVal sender As Object, ByVal e As System. Web. UI. WebControls. GridViewDeleteEventArgs) Handles GridView1.RowDeletinge. Cancel = True
Dim fileName As String = (CType (GridView1.Rows (e. RowIndex). FindControl ("FileLink"), HyperLink). Text
FileName = Path. Combine (Server. MapPath ("/media/ul"), fileName)
File. Delete (fileName)
GridView1.DataBind () End Sub
Protected Sub button#click (ByVal sender As Object, ByVal e As System. EventArgs) Handles Button1.ClickUploadThisFile (FileUpload1)
GridView1.DataBind () End Sub
End Class
