Advanced users expect transfer rate and time remaining — rarely included in basic examples.
Private Async Sub btnDownload_Click(sender As Object, e As EventArgs) Handles btnDownload.Click If String.IsNullOrWhiteSpace(txtUrl.Text) Then MessageBox.Show("Please enter a URL.", "Validation Error", MessageBoxButtons.OK, MessageBoxIcon.Warning) Return End If sfdSave.FileName = IO.Path.GetFileName(txtUrl.Text) If sfdSave.ShowDialog() <> DialogResult.OK Then Return Vb .Net File Download With Progress
Public Async Function ResumeDownloadAsync(url As String, filePath As String, progress As IProgress(Of Integer)) As Task(Of Boolean) Dim fileInfo As New IO.FileInfo(filePath) Dim existingBytes As Long = 0 If fileInfo.Exists Then existingBytes = fileInfo.Length End If Advanced users expect transfer rate and time remaining
Public Class Form1 Private WithEvents client As WebClient filePath As String