Virus installed as legacy driver

The free version of Malwarebytes found the file hjyqojs.sys as a rootkit:agent, but can't remove it because it is installed as a legacy driver. To resolve this, go to Device Manage, click View - Show hidden devices. Under legacy drivers, you will find the device with the same name. Disable it, restart, delete the file and then uninstall the device. I think the name of the infected file can differ.

I found another rootkit, just like the one described earlier, but it uses the file ptdyc.sys

Exception thrown in Form.Load event is never caught by IDE

You can configure debugger to break on selected exceptions. To do this you need to open Debug -> Exceptions window and ensure that both check boxes are checked (especially check box in "Thrown" column) for the "CLR Exceptions" row.

This means that debugger will intercept and break on the selected exceptions right after they are thrown.

Here is an article about this window: http://social.msdn.microsoft.com/Forums/en-US/vsdebug/thread/b8c82b79-47d4-42ab-abdb-ff71d67a0022

Source

Download prerequisites from the same location as my application.

2.3.1.1 Enable Samesite for the .NET Framework 3.5 SP1 bootstrapper package

If the .NET Framework 3.5 SP1 bootstrapper package is selected in the Prerequisite dialog box for a Setup project or in ClickOnce publishing, and also the "Download prerequisites from the same location as my application" option is selected, the following build error is shown:

The install location for prerequisites has not been set to 'component vendor's web site' and the file 'dotNetFx35setup.exe' in item 'Microsoft.Net.Framework.3.5.SP1' cannot be located on disk.

To resolve this issue:

Update the Package Data

1. Open the [Program Files]\Microsoft SDKs\Windows\v7.0A\Bootstrapper\Packages\DotNetFx35SP1 folder or %ProgramFiles(x86)%\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages\DotNetFx35SP1 on x64 operating systems
2. Edit the Product.xml file in Notepad.
3. Paste the following into the < PackageFiles > element:
< PackageFile Name="TOOLS\clwireg.exe" />
< PackageFile Name="TOOLS\clwireg_x64.exe" />
< PackageFile Name="TOOLS\clwireg_ia64.exe" />
4. Find the element for < PackageFile Name="dotNetFX30\XPSEPSC-x86-en-US.exe" and change the PublicKey value to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
5. Find the element for < PackageFile Name="dotNetFX30\XPSEPSC-amd64-en-US.exe" and change the PublicKey value to the same as in step 4 above
6. Save the product.xml file



Download and Extract the Core Installation Files

1. Navigate to the following URL: http://go.microsoft.com/fwlink?LinkID=118080
2. Download the dotNetFx35.exe file to your local disk.
3. Open a Command Prompt window and change to the directory to which you downloaded dotNetFx35.exe.
4. At the command prompt, type:
dotNetFx35.exe /x:.
This will extract the Framework files to a folder named “WCU” in the current directory.
5. Copy the contents of the WCU\dotNetFramework folder and paste them in the %Program Files%\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages\DotNetFx35SP1 folder (%ProgramFiles(x86)%\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages\DotNetFx35SP1 on x64 operating systems). Note: Do not copy the WCU\dotNetFramework folder itself. There should be 5 folders under the WCU folder, and each of these should now appear in the DotNetFx35SP1 folder. The folder structure should resemble the following:
o DotNetFx35SP1 (folder)
* dotNetFX20 (folder
* dotNetFX30 (folder)
* dotNetFX35 (folder)
* dotNetMSP (folder)
* TOOLS folder)
* en (or some other localized folder)
* dotNetFx35setup.exe (file)



You may now delete the files and folders you downloaded and extracted in steps 2 and 4.

Source

C# ClickOnce force auto update

To force an auto update in a C# application published with ClickOnce:
    - right click on the solution
    - select Properties
    - under Publish, click Updates button
    - check "Specify a minimum required version for this application"

C# update progressBar from backgroundWorker

private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
    progressBar.BeginInvoke(new MethodInvoker(delegate
       {
            //setProgress(10);
            progressBar1.Value += 10;
        }));
}