Demonstrates a TaskCompleted event for an asynchronous Chilkat method call. The event callback occurs in the background thread, and therefore any updates to the UI must happen on the UI thread. For this reason, MethodInvoker is used to make updates to a TextBox..
Dim “WithEvents” Dim WithEvents ftp As Chilkat.Ftp2 Add some code to create a new instance of the object. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ftp = New Chilkat.Ftp2() ftp.EnableEvents = True ftp.HeartbeatMs = 100 … Select the “ftp” object. Select the event. This causes Visual Studio to generate the event handler function. Add your […]
Question: In your examples online, we have noticed that .Dispose() is never called after using Chilkat classes (we are writing in C#). Is calling .Dispose() recommended? Does your code not need to destroy any native resources or handles that would normally be cleaned up in the Dispose method (the IDisposeable interface) ? Answer: For objects that manage a TCP/IP socket […]
Here is an example: Dim WithEvents http As Chilkat.Http Private Sub http_OnPercentDone(ByVal sender As Object, ByVal args As Chilkat.PercentDoneEventArgs) Handles http.OnPercentDone ProgressBar1.Value = args.PercentDone End Sub Private Sub HttpDownloadTest() http = New Chilkat.Http() Dim success As Boolean ‘ Any string unlocks the component for the 1st 30-days. success = http.UnlockComponent(“Anything for 30-day trial”) If (success True) Then MsgBox(http.LastErrorText) Exit Sub […]
Demonstrates how to use Chilkat.Compression to compress a string to a byte array: Private Sub CompressStringToBytes() Dim compress As New Chilkat.Compression() ‘ Any string argument automatically begins a 30-day trial. Dim success As Boolean success = compress.UnlockComponent(“30-day trial”) If (success <> True) Then MsgBox(“Compression component unlock failed”) Exit Sub End If ‘ Use the “deflate” algorithm, which is the algorithm […]