C#

• Microsoft.Bcl.AsyncInterfaces (>= 5.0.0)
• System.Buffers (>= 4.5.1)
• System.Memory (>= 4.5.4)
• System.Numerics.Vectors (>= 4.5.0)
• System.Runtime.CompilerServices.Unsafe (>= 5.0.0)
• System.Text.Encodings.Web (>= 5.0.1)
• System.Threading.Tasks.Extensions (>= 4.5.4)
• System.ValueTuple (>= 4.5.0)

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    if (webBrowser1.ReadyState == WebBrowserReadyState.Complete && IsRedirect)
    {
        System.Threading.Thread.Sleep(5000);
        timer1.Enabled = true;
    }
    else if (webBrowser1.ReadyState == WebBrowserReadyState.Complete && IsloginPage)
    {
        mshtml.IHTMLDocument2 htmlDocument = (mshtml.IHTMLDocument2) webBrowser1.Document.DomDocument;
        mshtml.IHTMLElementCollection objforms = htmlDocument.forms;
        foreach (mshtml.HTMLFormElementClass form in objforms)
        {
            if (form.className == "form")
            {
                IHTMLElementCollection inputElements = form.getElementsByTagName("INPUT");
                foreach (HTMLInputElementClass inputElement in inputElements)
                {
                    if ((inputElement.type.Trim().ToLower() == "email") && (inputElement.name.Trim() == "email"))
                    {
                        inputElement.value = "Test_UID@gmail.com";
                    }
                    else if ((inputElement.type.Trim().ToLower() == "password") && (inputElement.name.Trim() == "password"))
                    {
                        inputElement.value = "Test_PWD";
                    }
                }
                IHTMLElementCollection inputElements1 = form.getElementsByTagName("BUTTON");

                foreach (HTMLButtonElementClass inputElement in inputElements1)
                {
                    if ((inputElement.innerText.ToLower() == "sign in") && (inputElement.type.Trim().ToLower() == "submit")
                        && (inputElement.tagName.Trim().ToLower() == "button"))
                    {
                        inputElement.click();
                        break;
                    }
                }
            }
        }
    }
}

// Calculate commissions based on sales person level

{                   <--- This shouldn't be here
string strSalesPersonLevel;
strSalesPersonLevel = txtSalesPersonLevel.Text;

...

case "4":
{
dblCalculateCommission = 1250 + (dblAmountSold * 0.05);
break;
}

}                   <--- This shouldn't be here
// Convert commission into a string and place into a label with currency
//formatting
lblCalculateCommission.Text = dblCalculateCommission.ToString("C2");

private void btnCalculateCommission_Click(object sender, EventArgs e)
{
    if (!int.TryParse(txtSalesPersonLevel.Text, out var salesPersonLevel) || salesPersonLevel < 1 || salesPersonLevel > 4)
    {
        MessageBox.Show("Invalid sales person level.", "Input Error");
        txtSalesPersonLevel.SelectAll();
        txtSalesPersonLevel.Select();
        return;
    }
    
    if (!double.TryParse(txtAmountSold.Text, out var amountSold))
    {
        MessageBox.Show("Invalid amount sold.", "Input Error");
        txtAmountSold.SelectAll();
        txtAmountSold.Select();
        return;
    }
    
    double calculatedCommission;
    switch (salesPersonLevel)
    {
        case 1:
        {
           calculatedCommission = 500 + (amountSold * 0.02);
           break;
        }
        case 2:
        {
           calculatedCommission = 750 + (amountSold * 0.03);
           break;
        }
        case 3:
        {
           calculatedCommission = 1000 + (amountSold * 0.04);
           break;
        }
        case 4:
        {
           calculatedCommission = 1250 + (amountSold * 0.05);
           break;
        }
        default:
        {
            // Can't be reached, but the compiler doesn't know that:
           calculatedCommission = 0;
           break;
        }
    }
    
    lblCalculateCommission.Text = calculatedCommission.ToString("C2");
}

double calculatedCommission = salesPersonLevel switch
{
    1 => 500 + (amountSold * 0.02),
    2 => 750 + (amountSold * 0.03),
    3 => 1000 + (amountSold * 0.04),
    4 => 1250 + (amountSold * 0.05),
    _ => 0 // Not reachable, but the compiler doesn't know that.
};

string query = "SELECT * FROM Win32_Printer";
ManagementObjectSearcher searcher = new ManagementObjectSearcher( query );
var services = searcher.Get();

foreach ( ManagementObject service in services ) {

   var properties = service.Properties;

   foreach ( PropertyData p in properties ) {

      if ( p.Value == null ) { continue; }

      Console.WriteLine( $"{p.Name}: [{p.Value}]" );

   }  // end for.

}  // end for.

SzakiII wrote:

I have a problem with identifying printers

Quote:

A hardware ID is a vendor-defined identification string that Windows uses to match a device to an INF file. In most cases, a device has more than one hardware ID associated with it. Typically, a list of hardware IDs is sorted from most to least suitable for a device.

Gerry Schmitz wrote:

A "Hardware Id" (or "instance" id) is not same as a Serial Number.

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Encoding iso = Encoding.GetEncoding("ISO-8859-1");