Enable Single Click Button after Cancel Click
This article explains how to enable again a RadButton with SingleClick=true when the user cancels the progress/upload.
When the user clicks Cancel in RadProgressArea, the postback is cancelled, so there is no actual response from the server and this is what RadButton uses to re-enable itself.
The solution is to attach a handler to the Cancel button that will use the RadButton Client-side API to enable it again:
Example 1: Attaching the handler that will re-enable the button
<script>
function reEnable() {
var btn = $find("<%=RadButton1.ClientID%>");
btn.enableAfterSingleClick();
$telerik.$(".ruCancel", $find("<%=RadProgressArea1.ClientID%>").get_element()).off("mousedown", reEnable);
}
function attachHandlersToCancelButton() {
$telerik.$(".ruCancel", $find("<%=RadProgressArea1.ClientID%>").get_element()).on("mousedown", reEnable);
}
</script>
<telerik:RadButton RenderMode="Lightweight" ID="RadButton1" runat="server" Text="Submit" SingleClick="true" SingleClickText="Please wait..." OnClick="RadButton1_Click" OnClientClicking="attachHandlersToCancelButton">
</telerik:RadButton>
<telerik:RadProgressManager ID="RadProgressManager1" runat="server" />
<telerik:RadProgressArea RenderMode="Lightweight" ID="RadProgressArea1" runat="server" DisplayCancelButton="True"
ProgressIndicators="FilesCountBar,
FilesCount,
FilesCountPercent,
SelectedFilesCount,
CurrentFileName,
TimeElapsed,
TimeEstimated">
</telerik:RadProgressArea>
Example 2: Monitoring some custom progress
protected void Page_Load(object sender, EventArgs e)
{
RadProgressArea1.Localization.UploadedFiles = "Completed Steps: ";
RadProgressArea1.Localization.CurrentFileName = "Step: ";
RadProgressArea1.Localization.TotalFiles = "Total Steps:";
}
protected void RadButton1_Click(object sender, EventArgs e)
{
RadProgressContext context = RadProgressContext.Current;
context.SecondaryTotal = "100";
for (int i = 1; i < 100; i++)
{
context.SecondaryValue = i.ToString();
context.SecondaryPercent = i.ToString();
context.CurrentOperationText = "Doing step " + i.ToString();
if (!Response.IsClientConnected)
{
//Cancel button was clicked or the browser was closed, so stop processing
break;
}
// simulate a long time performing the current step
System.Threading.Thread.Sleep(100);
}
}
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
RadProgressArea1.Localization.UploadedFiles = "Completed Steps: "
RadProgressArea1.Localization.CurrentFileName = "Step: "
RadProgressArea1.Localization.TotalFiles = "Total Steps:"
End Sub
Protected Sub RadButton1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles RadButton1.Click
Dim context As RadProgressContext = RadProgressContext.Current
context.SecondaryTotal = "100"
Dim i As Integer = 1
While i < 100
context.SecondaryValue = i.ToString()
context.SecondaryPercent = i.ToString()
context.CurrentOperationText = "Doing step " + i.ToString()
If Not Response.IsClientConnected Then
'Cancel button was clicked or the browser was closed, so stop processing
Exit While
End If
' simulate a long time performing the current step
System.Threading.Thread.Sleep(100)
i = i + 1
End While
End Sub