/* Event Handler for Start Button:
* Validate if Server Name and Table Number is entered or not
* if Yes, GUI changes will be made*/
private void Button_Start_Click(object sender, EventArgs e)
{
if (TextBox_Server_Name.Text == "")
{
MessageBox.Show("Please enter server name before taking order.", "Server Name Required", MessageBoxButtons.OK, MessageBoxIcon.Error);
TextBox_Server_Name.Focus();
}
else if (TextBox_Table_No.Text == "")
{
MessageBox.Show("Please enter table number before taking order.", "Table Name Required", MessageBoxButtons.OK, MessageBoxIcon.Error);
TextBox_Table_No.Focus();
}
else
{
//Defaulting Pizza Quantity textboxes to 0
TextBox_Pizza1_Quantity.Text = TextBox_Pizza2_Quantity.Text = TextBox_Pizza3_Quantity.Text = "0";
//Displaying Sult Logo at bottom
Picture_Sult_Logo.Visible = true;
//Hiding Sult Title Picture located at top
Picture_Sult_Panel.Visible = false;
//Current Panel will be getting hidden
Panel_Start.Visible = false;
//Pizza Menu Will be shown along with Multiple Buttons Panel, Location will be taken from Sult Title Picture
GroupBox_Pizza_Menu.Location = new Point(Picture_Sult_Panel.Location.X, Picture_Sult_Panel.Location.Y);
GroupBox_Pizza_Menu.Visible = true;
//Button such as Order, Clear will be shown as part of Panel, Location will be dynamically calculated from Pizza Menu
Panel_Controls.Location = new Point(GroupBox_Pizza_Menu.Location.X, (GroupBox_Pizza_Menu.Location.Y + GroupBox_Pizza_Menu.Size.Height + 4));
Panel_Controls.Visible = true;
//Pizza 1 Quantity will have the focus
TextBox_Pizza1_Quantity.Focus();
//Form Title will be changed
MainForm.ActiveForm.Text = TextBox_Server_Name.Text + " @ Table Number " + TextBox_Table_No.Text;
}
}
// Event Handler to validate Table Number and display the error message when the user enters invalid value for table Number
//if input is invalid, previous input will be cleared out and Table Number texbox will be focussed
private void TextBox_Table_No_Leave(object sender, EventArgs e)
{
if ((TextBox_Table_No.Text.All(char.IsDigit)) == false)
{
MessageBox.Show("Please enter Correct Table Number.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
TextBox_Table_No.Text = "";
TextBox_Table_No.Focus();
TextBox_Table_No.SelectAll();
}
else
{
Button_Start.Focus();
}
}