C#

joost.versteegen wrote:

Why not use a TabControl and open a new TabPage i.s.o. a new Form in a Form?

private void btnVisibleControl_Click(object sender, EventArgs e)
{
    secondForm.Visible = ! secondForm.Visible;
}

private void secondForm_FormClosing(object sender, FormClosingEventArgs e)
{
    this.Hide();
    e.Cancel = true;
}

private secondForm f2;

private string strClose = "Close Second Form";

private string strOpen = "Open Second Form";

private void FormTemplate_Load(object sender, EventArgs e)
{
    f2 = new secondForm();

    // by assigning 'secondForm's Closing EventHandler here:
    // we can synchronize the Button Text easily since the
    // the EventHandler will have access to the Button
    f2.FormClosing += f2_FormClosing;

    btnVisibleControl.Text = strOpen;
}

// prevent the instance of 'secondForm from actually closing
private void f2_FormClosing(object sender, FormClosingEventArgs e)
{
    f2.Hide();

    // update the Button Text
    btnVisibleControl.Text = strOpen;

    e.Cancel = true;
}

// change the Button Text so the end-user sees
// what pressing the Button will do
private void button1_Click(object sender, EventArgs e)
{
    if (f2.Visible)
    {
        btnVisibleControl.Text = strOpen;
    }
    else
    {
        btnVisibleControl.Text = strClose;
    }

    // or you can use this to make the code (above) simpler:
    // btnVisibleControl.Text = (f2.Visible) ? strOpen : strClose;

    f2.Visible = ! f2.Visible;
}

secondform.close();

Quote:

"SERVER=singer1990-pc\\sqlexpress-PC;DATABASE=POSNow;Trusted_Connection=True"

try {
   // Your code goes here...
} catch (Exception ex) {
   // You canlog the exception object here. 
   // This even prevents your application from crashing ;)
}

List<Callout> jobList = XDocument.Parse(responseString)
    .Descendants("USEROUT")
    .Where(el => string.Equals((string)el.Attribute("filename"), "User_out.csv", StringComparison.OrdinalIgnoreCase))
    .Descendants("row")
    .Select(item => new Callout { ... })
    .ToList();

List<Callout> jobList = XDocument.Parse(responseString)
    .Descendants("USEROUT")
    .Where(el => string.Equals((string)el.Attribute("filename"), "User_out.csv", StringComparison.OrdinalIgnoreCase))
    .Descendants("row")
    .Where(item => string.Equals((string)item.Attribute("TASK_TYPE"), "2", StringComparison.Ordinal))
    .Select(item => new Callout { ... })
    .ToList();