Develop Reference

How can I use a textbox, label and button that was added to a panel to input and show information

Okay so basically I have a calendar display and when you click on anyone of the dates on it, it creates a new panel with a label displaying the date selected. I also made it so when you click on a date and a new panel is made, a label, textbox and button is created and placed onto that new panel as well.
So what I want and have been struggling with is for me to enter something into that textbox then to press the button to submit it and then for it to show on the label.
I think I know what the issue is but I've been stuck at this for hours.
Here is my code:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void monthCalendar1_DateSelected_1(object sender, DateRangeEventArgs e)
{
Panel newPanel = new Panel();
this.Controls.Add(newPanel);
newPanel.Visible = true;
newPanel.Size = new Size(564, 831);
newPanel.Location = new Point(0, 190);
newPanel.BringToFront();
Label textLabel = new Label();
textLabel.Size = new Size(500, 500);
textLabel.Font = new Font(textLabel.Font.Name, 25, textLabel.Font.Style);
textLabel.Location = new Point(3, 3);
Label dateLabel = new Label();
dateLabel.Size = new Size(500, 500);
dateLabel.Font = new Font(dateLabel.Font.Name, 25, dateLabel.Font.Style);
dateLabel.Location = new Point(128, 3);
Button Submitbutton = new Button();
Submitbutton.Location = new Point(100, 500);
Submitbutton.Text = "Add Food";
Submitbutton.Size = new Size(400, 100);
Submitbutton.BackColor = Color.Aqua;
Submitbutton.BringToFront();
Submitbutton.Click += Button_Click;
TextBox textBox = new TextBox();
textBox.Location = new Point(100, 650);
textBox.Size = new Size(500, 500);
textBox.BackColor = Color.Aqua;
textBox.Visible = true;
textBox.Text = "Enter food here...";
textBox.BringToFront();
Label inputtedFood = new Label();
inputtedFood.Size = new Size(500, 500);
inputtedFood.Font = new Font(inputtedFood.Font.Name, 25, inputtedFood.Font.Style);
inputtedFood.Location = new Point(100, 600);
inputtedFood.Text = "placeholder";
newPanel.Controls.Add(dateLabel);
newPanel.Controls.Add(textLabel);
newPanel.Controls.Add(Submitbutton);
newPanel.Controls.Add(textBox);
newPanel.Controls.Add(inputtedFood);
String myCalendar = monthCalendar1.SelectionRange.Start.ToShortDateString();
textLabel.Text = "Date:";
dateLabel.Text = myCalendar;
}
private void Button_Click(object sender, EventArgs e)
{
inputtedFood.Text = textBox.Text;
}
private void monthCalendar1_DateChanged_1(object sender, DateRangeEventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
}
}
I tried the above code and was met with errors that are shown in the post.

Totally agree with both LarsTech and Ňɏssa Pøngjǣrdenlarp, you should be building a UserControl in place of the Panel and placing the TextBox, Button, and Label inside of that.
Your immediate question, though:
So what I want and have been struggling with is for me to enter
something into that textbox then to press the button to submit it and
then for it to show on the label.
Can be accomplished with this simple code:
Button Submitbutton = new Button();
// ... more code ...
Submitbutton.Click += (s2, e2) =>
{
inputtedFood.Text = textBox.Text;
};
Here's a little example showing it in action:
private void button1_Click(object sender, EventArgs e)
{
FlowLayoutPanel flp = new FlowLayoutPanel();
TextBox textBox = new TextBox();
// ... more code ...
Label inputtedFood = new Label();
inputtedFood.Text = "placeholder";
// ... more code ...
Button Submitbutton = new Button();
// ... more code ...
Submitbutton.Click += (s2, e2) =>
{
inputtedFood.Text = textBox.Text;
};
flp.Controls.Add(textBox);
flp.Controls.Add(Submitbutton);
flp.Controls.Add(inputtedFood);
flowLayoutPanel1.Controls.Add(flp);
}
The output:

Controls.Find not working within specific if-statement?

I´m stuck on a problem using controls.find and I can´t find the error.
I´m creating a loginform using different panels.
Panels are created as follows:
public Panel CreatePanel()
{
Panel login = new Panel();
TextBox Login_UsernameTB = new TextBox();
TextBox Login_PasswordTB = new TextBox();
Label label1 = new Label();
Label label2 = new Label();
Label loginstatus = new Label();
Button Login_Loginbtn = new Button();
Button Login_Registerbtn = new Button();
PictureBox Login_Logo = new PictureBox();
PictureBox Login_ECard = new PictureBox();
//creatingPanel
login.Location = new Point(0, 0);
login.Name = "Login";
login.Size = new Size(1000, 400);
//locations
Login_ECard.Location = new Point(500, 250);
Login_ECard.SizeMode = PictureBoxSizeMode.StretchImage;
Login_ECard.Image = PatientSimulator.Properties.Resources.Ecard;
Login_ECard.Name = "Login_Ecard";
Login_Logo.Location = new Point(148, 12);
Login_Logo.SizeMode = PictureBoxSizeMode.StretchImage;
Login_Logo.Image = PatientSimulator.Properties.Resources.Logo;
Login_Logo.Name = "Login_Logo";
label1.Location = new Point(31, 200);
label1.Size = new Size(58, 13);
label1.Text = "Username:";
label1.Name = "label1";
label2.Location = new Point(31, 244);
label2.Size = new Size(56, 13);
label2.Text = "Password:";
label2.Name = "label2";
Login_UsernameTB.Location = new Point(148, 197);
Login_UsernameTB.Size = new Size(359, 20);
Login_UsernameTB.Text = "Testfirma1";
Login_UsernameTB.Name = "Login_UsernameTB";
Login_PasswordTB.Location = new Point(148, 241);
Login_PasswordTB.Size = new Size(359, 20);
Login_PasswordTB.Text = "Hallo1234#";
Login_PasswordTB.PasswordChar = '*';
Login_PasswordTB.Name = "Login_PasswordTB";
Login_Loginbtn.Location = new Point(432, 334);
Login_Loginbtn.Size = new Size(75, 23);
Login_Loginbtn.Text = "Login";
Login_Loginbtn.Click += Login_Loginbtn_Click;
loginstatus.Location = new Point(323, 360);
loginstatus.Size = new Size(300, 20);
loginstatus.Text = "";
loginstatus.Name = "loginstatus";
Login_Registerbtn.Location = new Point(323, 334);
Login_Registerbtn.Size = new Size(75, 23);
Login_Registerbtn.Text = "Register";
Login_Registerbtn.Click += Login_Registerbtn_Click;
login.Controls.Add(Login_ECard);
login.Controls.Add(Login_Logo);
login.Controls.Add(label1);
login.Controls.Add(label2);
login.Controls.Add(Login_UsernameTB);
login.Controls.Add(Login_PasswordTB);
login.Controls.Add(Login_Loginbtn);
login.Controls.Add(Login_Registerbtn);
login.Controls.Add(loginstatus);
return login;
}
In Form_load:
Panel login = CreatePanel();
login.Visible = true;
Controls.Add(login);
When I start the application, everything is displayed. if I type some text into systemstatus.text isn't gets displayed.
When doing a check if the entered password & username are correct, the strange stuff happens.
private void Login_Loginbtn_Click(object sender, EventArgs e)
{
Patient.DBAccess db = new Patient.DBAccess();
Sha256 sha = new Sha256();
string username = login.Controls.Find("Login_UsernameTB", true)[0].Text;
string userpw = login.Controls.Find("Login_PasswordTB", true)[0].Text;
Patient.DatabaseRequestInterface.UserInterface user = new Patient.DatabaseRequestInterface.UserInterface();
user.Username = username;
if (db.IsUserExisting(user)){
user = db.ReadUserPassword(user);
string salt = Encoding.ASCII.GetString(user.PasswordSalt);
byte[] pw = sha.GetSha256(userpw, salt);
if (pw.SequenceEqual(user.PasswordHash))
{
//Programm starten
//token generieren
Patient.DatabaseRequestInterface.UserInterface useri = db.ReadFullUser(user);
UserAuthentificationToken = new UserInfo(useri.Username, useri.Uuid, DateTime.Now);
LoginSuccessEvent?.Invoke(this, new EventArgs());
login.Controls.Find("loginstatus", true)[0].Text = "Login successfull";
this.Close();
}
else
{
MessageBox.Show("Login failed, Username and/or password incorrect");
}
}
else
{
MessageBox.Show("Falscher User oder Passwort");
//Controls.Find("Login_StatusL", true)[0].Text = "Login failed, Username and/or password incorrect!";
}
}
The first 2 times I use controls.find it works, I get the strings entered by the users at the corresponding TextBoxes. When I try to change loginstatus, I get a System.IndexOutOfRangeException. My interpretation of the exception is, that there was no loginstatus found. And I don´t understand why. (the other 2 elements can´t be found within the if as well)
Can anyone help?
the controls.find("string",true)[0].Text = "XXX" works, I use it a lot at another part of the application
Any ideas?
Thanks in advance,
David

You miss the Name property in your code and Controls.Find strictly work on Name
Login_UsernameTB.Name = "Login_UsernameTB";
So your Code should be something like this:
public Panel CreatePanel()
{
Panel login = new Panel();
login.Size = new Size(900, 900);
TextBox Login_UsernameTB = new TextBox();
Login_UsernameTB.Name = "Login_UsernameTB";
Login_UsernameTB.Location = new Point(50, 50);
Login_UsernameTB.Text = "Username here";
TextBox Login_PasswordTB = new TextBox();
Login_PasswordTB.Name = "Login_PasswordTB";
Login_PasswordTB.Location = new Point(150, 50);
Login_PasswordTB.Text = "password here";
//stuff is asigned to TBs...
Label loginstatus = new Label();
loginstatus.Location = new Point(150, 150);
loginstatus.Size = new Size(300, 20);
loginstatus.Text = "";
loginstatus.Name = "loginstatus";
login.Controls.Add(Login_UsernameTB);
login.Controls.Add(Login_PasswordTB);
login.Controls.Add(loginstatus);
return login;
}
Also, the login should be class level but not defined inside the Form_Load
like this :
public partial class Form1 : Form
{
Panel login;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
login = CreatePanel();
login.Visible = true;
Controls.Add(login);
}
.....
I have tested it and works fine.
My test code is
using System;
using System.Drawing;
using System.Windows.Forms;
namespace SackOverflow
{
public partial class Form1 : Form
{
Panel login;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
login = CreatePanel();
login.Visible = true;
Controls.Add(login);
}
public Panel CreatePanel()
{
Panel login = new Panel();
login.Size = new Size(900, 900);
TextBox Login_UsernameTB = new TextBox();
Login_UsernameTB.Name = "Login_UsernameTB";
Login_UsernameTB.Location = new Point(50, 50);
Login_UsernameTB.Text = "Username";
TextBox Login_PasswordTB = new TextBox();
Login_PasswordTB.Name = "Login_PasswordTB";
Login_PasswordTB.Location = new Point(150, 50);
Login_PasswordTB.Text = "password";
//stuff is asigned to TBs...
Label loginstatus = new Label();
loginstatus.Location = new Point(150, 150);
loginstatus.Size = new Size(300, 20);
loginstatus.Text = "";
loginstatus.Name = "loginstatus";
login.Controls.Add(Login_UsernameTB);
login.Controls.Add(Login_PasswordTB);
login.Controls.Add(loginstatus);
return login;
}
private void button1_Click(object sender, EventArgs e)
{
if (true)
{
string username = login.Controls.Find("Login_UsernameTB", true)[0].Text;
string userpw = login.Controls.Find("Login_PasswordTB", true)[0].Text;
//UserInterface user = //some database stuff to get the password saved by the user
if ("123" == userpw)
{
login.Controls.Find("loginstatus", true)[0].Text = "Logging in";
Login();
}
else
{
login.Controls.Find("loginstatus", true)[0].Text = "Error";
}
}
}
private void Login()
{
MessageBox.Show("Login");
}
}
}
Result is:
I receive the message box MessageBox.Show("Login"); shown and Loginstatus is shown too.

Create Textboxes Using Methods or Classes

I have code for creating textboxes. I'm repeating this code three times in different areas. I'm trying to learn more about methods and classes, so I would like to know if there is any possibility of creating textboxes using methods or classes without repeating code.
private void incomes_Click(object sender, EventArgs e)
{
panel1.Controls.Clear();
TextBox textbox1 = new TextBox();
textbox1.Size = new Size(75,23);
textbox1.Text = "Name";
textbox1.Location = new Point(0, 0);
panel1.Controls.Add(textbox1);
TextBox textbox2 = new TextBox();
textbox2.Size = new Size(75, 23);
textbox2.Text = "Sum";
textbox2.Location = new Point(80, 0);
panel1.Controls.Add(textbox2);
}

Absolutely! You can create a method that accepts the differing parameters and creates the textbox with those specifications:
private void incomes_Click(object sender, EventArgs e)
{
panel1.Controls.Clear();
TextBox textbox1 = CreateTextBox("Name", 0);
TextBox textbox2 = CreateTextBox("Sum", 80);
// Now you can use the textbox values...
}
private TextBox CreateTextBox(string text, int x)
{
TextBox textbox = new TextBox();
textbox.Size = new Size(75, 23);
textbox.Text = text;
textBox.Location = new Point(x, 0);
panel1.Controls.Add(textbox);
return textbox;
}

Iterating controls on button click in c# windows application

I am trying to create a windows application where I want to display a group of controls (Combo Box, Text Box and a button) on button click inside a panel.
I have created a code to create controls once but I want to create them again and again on button click one below another.
The code I am using is
public partial class Employee_PayHeads_add : Form
{
private TextBox txtBox = new TextBox();
private Button btnAdd = new Button();
private ComboBox combohead = new ComboBox();
public Employee_PayHeads_add()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
this.btnAdd.BackColor = Color.Gray;
this.btnAdd.Text = "Remove";
this.btnAdd.Location = new System.Drawing.Point(240, 25);
this.btnAdd.Size = new System.Drawing.Size(70, 25);
this.txtBox.Text = "";
this.txtBox.Location = new System.Drawing.Point(150, 25);
this.txtBox.Size = new System.Drawing.Size(70, 40);
this.combohead.Location = new System.Drawing.Point(10, 25);
panel1.Controls.Add(btnAdd);
panel1.Controls.Add(txtBox);
panel1.Controls.Add(combohead);
}
Also I want a vertical scroller in the panel if number controls overlap the space.
Thanks in advance

Inside the button click event create new objects, instead of using the one you declared before.
Try something like that:
public partial class Employee_PayHeads_add : Form
{
private TextBox txtBox = new TextBox();
private Button btnAdd = new Button();
private ComboBox combohead = new ComboBox();
private int txtBoxStartPosition = 150;
private int btnAddStartPosition = 240;
private int comboheadStartPosition = 10;
}
public Employee_PayHeads_add()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
TextBox newTxtBox = new TextBox();
Button newBtnAdd = new Button();
ComboBox newCombohead = new ComboBox();
newBtnAdd.BackColor = Color.Gray;
newBtnAdd.Text = "Remove";
newBtnAdd.Location = new System.Drawing.Point(btnAddStartPosition, 25);
newBtnAdd.Size = new System.Drawing.Size(70, 25);
newTxtBox.Text = "";
newTxtBox.Location = new System.Drawing.Point(txtBoxStartPosition, 25);
newTxtBox.Size = new System.Drawing.Size(70, 40);
newCombohead.Location = new System.Drawing.Point(comboheadStartPosition, 25);
panel1.Controls.Add(newBtnAdd);
panel1.Controls.Add(newTxtBox);
panel1.Controls.Add(newCombohead);
txtBoxStartPosition += 50;
btnAddStartPosition += 50;
comboheadStartPosition += 50;
}

I havent tried your code yet, but it shows that it is always creating the new controls on every click event, but as youo have specified the hardcoaded location for buttons, so it must be creating new controls overlapping each other. so you can change the location dynamically and hopefully it will work

If you want to add the controls again and again you have to create new ones. So rather than defining them in your form like that you have to:
private void button1_Click(object sender, EventArgs e)
{
Button btnAdd = new Button();
btnAdd.BackColor = Color.Gray;
btnAdd.Text = "Remove";
btnAdd.Location = new System.Drawing.Point(240, 25);
btnAdd.Size = new System.Drawing.Size(70, 25);
TextBox txtBox = new TextBox();
txtBox.Text = "";
txtBox.Location = new System.Drawing.Point(150, 25);
txtBox.Size = new System.Drawing.Size(70, 40);
ComboBox combohead = new ComboBox();
combohead.Location = new System.Drawing.Point(10, 25);
panel1.Controls.Add(btnAdd);
panel1.Controls.Add(txtBox);
panel1.Controls.Add(combohead);
}
Now you can remove those private declarations on top of your class.

How do I use the save feature on tabcontols?

I have a form where I can add tabs into a tabcontrol by pressing a button on the form. There are 4 textboxes and then the name of the tab. I have added using system.io;
Where would I even start to create a save for all of the tabs? I have the save button created, I just don't know where to start. I would guess I would need a loop of some kind.
namespace WindowsFormsApplication4
{
public partial class Form1 : Form
{
public string status = "no";
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string name = txtName.Text;
//validate information
try { }
catch { }
//create new tab
string title = name;
TabPage myTabPage = new TabPage(title);
tabControl1.TabPages.Add(myTabPage);
//Add Labels
Label lb = new Label();
lb.Text = "Denomination:";
lb.Location = new System.Drawing.Point(150, 75);
lb.Name = "lbl";
lb.Size = new System.Drawing.Size(100, 20);
myTabPage.Controls.Add(lb);
Label lb2 = new Label();
lb2.Text = "Year:";
lb2.Location = new System.Drawing.Point(150, 120);
lb2.Name = "lbl2";
lb2.Size = new System.Drawing.Size(100, 20);
myTabPage.Controls.Add(lb2);
Label lb3 = new Label();
lb3.Text = "Grade:";
lb3.Location = new System.Drawing.Point(150, 165);
lb3.Name = "lbl3";
lb3.Size = new System.Drawing.Size(100, 20);
myTabPage.Controls.Add(lb3);
Label lb4 = new Label();
lb4.Text = "Mint Mark:";
lb4.Location = new System.Drawing.Point(150, 210);
lb4.Name = "lbl4";
lb4.Size = new System.Drawing.Size(100, 20);
myTabPage.Controls.Add(lb4);
//Add text boxes
TextBox tb = new TextBox();
tb.Location = new System.Drawing.Point(250, 75);
tb.Name = "txt";
tb.Size = new System.Drawing.Size(184, 20);
myTabPage.Controls.Add(tb);
TextBox tb1 = new TextBox();
tb1.Location = new System.Drawing.Point(250, 120);
tb1.Name = "txt1";
tb1.Size = new System.Drawing.Size(184, 20);
myTabPage.Controls.Add(tb1);
TextBox tb2 = new TextBox();
tb2.Location = new System.Drawing.Point(250, 165);
tb2.Name = "txt2";
tb2.Size = new System.Drawing.Size(184, 20);
myTabPage.Controls.Add(tb2);
TextBox tb3 = new TextBox();
tb3.Location = new System.Drawing.Point(250, 210);
tb3.Name = "txt3";
tb3.Size = new System.Drawing.Size(184, 20);
myTabPage.Controls.Add(tb3);
//put data inside of textboxes
tb.Text = txtCoin.Text;
tb1.Text = txtYear.Text;
tb2.Text = txtGrade.Text;
tb3.Text = txtMint.Text;
// Add delete button
Button bn = new Button();
bn.Location = new System.Drawing.Point(560, 350);
bn.Name = "btnDelete";
bn.Text = "Delete";
bn.Size = new System.Drawing.Size(100, 50);
bn.Click += MyClick;
myTabPage.Controls.Add(bn);
}
private void MyClick(object sender, EventArgs e)
{
Form2 myform = new Form2();
myform.ShowDialog();
if (status == "yes")
{ tabControl1.TabPages.Remove(tabControl1.SelectedTab); }
status = "no";
}
private void btnExit_Click(object sender, EventArgs e)
{
this.Close();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
int counter;
int ccounter;
string outLine;
string pathFileName = Path.Combine(Application.StartupPath, "coins.dat");
StreamWriter writeIt = new StreamWriter(pathFileName);
for (counter = 0; ((tabControl1.TabCount) -1) != 0 ;)
{
}
writeIt.Close();
}
}
}

Use a foreach loop instead of your for (counter = 0; ((tabControl1.TabCount) -1) != 0 ;) loop:
foreach (TabPage tabPage in tabControl.TabPages)

Your for loop is a infinite loop, do it like that:
for (counter = 0; counter < tabControl1.TabCount; counter++)
{
// Save the tab
}