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Manipulating similar objects in a form using another form

I am new to C# and I want to utilize the forms with one another.
I have 2 forms. (1)MMCMLibrary_home and (2)MMCMLibrary_reserve.
In this project, I'm in the stage of changing the label background colors in Form 1 but can't seem to utilize Form 2 to process it.
These are my necessary codes so far:
FORM 1
namespace MMCM_Library
{
public partial class MMCMLibrary_home : Form
{
public static MMCMLibrary_home instance;
//DCR1 Labels
public Label lbl1_1;
public Label lbl1_2;
public Label lbl1_3;
public Label lbl1_4;
public MMCMLibrary_home()
{
InitializeComponent();
instance = this;
lbl1_1 = lblDCR1_9;
lbl1_2 = lblDCR2_11;
lbl1_3 = lblDCR1_1;
lbl1_4 = lblDCR1_3;
public void btnDCR1_Click(object sender, EventArgs e)
{
var reserveDCR1 = new MMCMLibrary_reserve();
reserveDCR1.Show();
}
public void btnDCR2_Click(object sender, EventArgs e)
{
var reserveDCR2 = new MMCMLibrary_reserve();
reserveDCR2.Show();
}
public void btnDCR3_Click(object sender, EventArgs e)
{
var reserveDCR3 = new MMCMLibrary_reserve();
reserveDCR3.Show();
}
public void btnDCR4_Click(object sender, EventArgs e)
{
var reserveDCR4 = new MMCMLibrary_reserve();
reserveDCR4.Show();
}
}
}
FORM 2
when I click any reserve now button in form 1 it will open form 2. However, if I pick a radio button, the background change will always be applied to Discussion Room 1 even I reserved for discussion room 2
namespace MMCM_Library
{
public partial class MMCMLibrary_reserve : Form
{
public static MMCMLibrary_reserve instance;
public MMCMLibrary_reserve()
{
InitializeComponent();
instance = this;
}
private void MMCMLibrary_reserve_Load(object sender, EventArgs e)
{
}
private void splitContainer1_Panel2_Paint(object sender, PaintEventArgs e)
{
}
private void splitContainer1_Panel1_Paint(object sender, PaintEventArgs e)
{
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
}
private void radioButton1_CheckedChanged_1(object sender, EventArgs e)
{
}
private void btnDCR1_Click(object sender, EventArgs e)
{
}
public void btnDCRoomsReserve_Click(object sender, EventArgs e)
{
if (rbtn9.Checked)
{
MMCMLibrary_home.instance.lbl1_1.BackColor = System.Drawing.Color.Red;
}
}
}
}
Can you help me to device an efficient way to solve this. Can you also suggest a database method suitable for my beginner project.

You've said that:
the background change will always be applied to Discussion Room 1
Well, yes. It seems you don't pass specific object into Form2. There's strightforward:
MMCMLibrary_home.instance.lbl1_1.BackColor = System.Drawing.Color.Red;
So you'll be always changing backcolor of lbl1_1 of your Form1. What needs to be done is to indicate which room has been selected. You can assign room after you click the button by passing the int parameter:
public void btnDCR1_Click(object sender, EventArgs e)
{
var reserveDCR1 = new MMCMLibrary_reserve(1);
reserveDCR1.Show();
}
or:
public void btnDCR2_Click(object sender, EventArgs e)
{
var reserveDCR2 = new MMCMLibrary_reserve(2);
reserveDCR2.Show();
}
Then, in Form2, at the very top, add something like:
int room; to be able to assign the room number in Form2:
public MMCMLibrary_reserve(int roomNumber)
{
InitializeComponent();
room = roomNumber;
instance = this;
}
And then you could just select room you clicked, by:
public void btnDCRoomsReserve_Click(object sender, EventArgs e)
{
if (rbtn9.Checked)
{
if(room == 1)
{
MMCMLibrary_home.instance.lbl1_1.BackColor = System.Drawing.Color.Red;
}
else if(room == 2)
{
MMCMLibrary_home.instance.lbl1_2.BackColor = System.Drawing.Color.Red;
}
else if(room == 3)
{
MMCMLibrary_home.instance.lbl1_3.BackColor = System.Drawing.Color.Red;
}
else if(room == 4)
{
MMCMLibrary_home.instance.lbl1_4.BackColor = System.Drawing.Color.Red;
}
}
else if(radioButton2.Checked)
{
//etc.
}
else if(radioButton3.Checked)
{
//etc.
}
else if(radioButton4.Checked)
{
//etc.
}
}
I think that was the problem. Try it and let us know.

How to create Dialog Box with Radio Buttons and return Value

I have a List of Objects. What I want to do:
Build a Dialog Box which shows a Radio Button for each element in the given List and returning the selected element/value by clicking on OK-Button.
Thanks in Advance.

Here is a quick example of creating your own form and getting a value from it.
Form1.cs:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
frmTest frmTest = new frmTest();
DialogResult dr = frmTest.ShowDialog();
if(dr == System.Windows.Forms.DialogResult.OK)
{
string value = frmTest.GetValue();
MessageBox.Show(value);
}
}
}
Form1 View:
public partial class frmTest : Form
{
private string _value { get; set; }
public frmTest()
{
InitializeComponent();
}
private void button2_Click(object sender, EventArgs e)
{
this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.Close();
}
private void button1_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.OK;
this.Close();
}
private void radioButton_CheckedChanged(object sender, EventArgs e)
{
RadioButton radioButton = (RadioButton)sender;
this._value = radioButton.Text; // Assign the radio button text as value Ex: AAA
}
public string GetValue()
{
return this._value;
}
}
You have to make sure that all radio buttons are using radioButton_CheckedChanged for the CheckedChanged event.
Form2 View:
Output:

build your own form and add a public variable "a string for example" called "Result"
public partial class YourDialog:Form
{
public string Result = "";
public YourDialog()
{// add all the controls you need with the necessary handlers
//add the OK button with an "On Click handler"
}
private void OK_Button_Click(object sender, EventArgs e)
{
//set the Result value according to your controls
this.hide();// will explain in the main form
}
}
// in your main form
private string GetUserResult()
{
YourDialog NewDialog = new YourDialog();
NewDialog.ShowDialog();//that's why you only have to hide it and not close it before getting the result
string Result = NewDialog.Result;
NewDialog.Close();
return Result;
}

OOps! I came back just to see there are already 2 answers! How ever, I want to post my version, which can build controls according to list of strings:
//dialog form
public partial class frmDialogcs : Form
{
public string selectedString;
//keep default constructor or not is fine
public frmDialogcs()
{
InitializeComponent();
}
public frmDialogcs(IList<string> lst)
{
InitializeComponent();
for (int i = 0; i < lst.Count; i++)
{
RadioButton rdb = new RadioButton();
rdb.Text = lst[i];
rdb.Size = new Size(100, 30);
this.Controls.Add(rdb);
rdb.Location = new Point(20, 20 + 35 * i);
rdb.CheckedChanged += (s, ee) =>
{
var r = s as RadioButton;
if (r.Checked)
this.selectedString = r.Text;
};
}
}
private void btnOK_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.OK;
}
}
//in main form
private void button1_Click(object sender, EventArgs e)
{
var lst = new List<string>() { "a", "b", "c" };
frmDialogcs dlg = new frmDialogcs(lst);
if (dlg.ShowDialog() == DialogResult.OK)
{
string selected = dlg.selectedString;
MessageBox.Show(selected);
}
}

Transmitting events from a Winform to another in C#

How can I click a Button(to generate a color) in one form and change text color in a RichTextBox in a another form? Thanks in advance. (Newbie trying to understand C#)
Some code:
1.WinForm
public delegate void ColorWindowEvent(Object sender, SecondrWindowEventArgs e);
public partial class ColorWindow : Form
{
public event ColorWindowEvent myEventHandler;
public ColorWindow ()
{
InitializeComponent();
}
public void MyEvent(Object sender, ColorWindowEventArgs e)
{
string s = "";
myEventHandler(this, new SecondWindowEventArgs(s));
}
private void btnRed_Click(object sender, EventArgs e)
{
Color c = Color.Red;
string s = c.ToString();
this.Close();
}
private void btnBlue_Click(object sender, EventArgs e)
{
Color c = Color.Blue;
string str = c.ToString();
this.Close();
}
private void btnGreen_Click(object sender, EventArgs e)
{
Color c = Color.Green;
string s = c.ToString();
this.Close();
}
}
public class SecondWindowEventArgs : EventArgs
{
private string s;
public SecondWindowEventArgs(string _s)
{
s = _s;
}
#region
public string S
{
get;
set;
}
#endregion
}
2.WinForm
public delegate void SecondWindowEvent(Object sender, FirstWindowEventArgs e);
public partial class SecondWindow : Form
{
public event SecondWindowEvent myEventHandler;
private string s;
public SecondWindow(String _s)
{
s = _s;
InitializeComponent();
}
public void MyEvent(Object sender, FirstWindowEventArgs e)
{
string str = rtf2.Text;
if (str != null)
{
myEventHandler(this, new FirstWindowEventArgs(str));
}
}
private void btnQuit_Click(object sender, EventArgs e)
{
this.Close();
}
private void rtf2_TextChanged(object sender, EventArgs e)
{
if (myEventHandler != null)
{
myEventHandler(this, new FirstWindowEventArgs(rtf2.Text.Substring(rtf2.Text.Length - 1)));
rtf2.ForeColor = Color.FromName(e.ToString());
}
}
private void btnClearText_Click(object sender, EventArgs e)
{
rtf2.Text = " ";
}
private void rtf2_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyData == Keys.Escape)
{
FargeVindu fargeVindu = new FargeVindu();
fargeVindu.minEventHandler += new FargeVinduEvent(fargeVindu_minEventHandler);
fargeVindu.Show();
}
else if (e.KeyData == Keys.Delete)
{
}
}
protected void ColorWindow_myEventHandler(object sender, SecondWindowEventArgs e)
{
rtf2.ForeColor = Color.FromName(s);
}
Random random = new Random();
private void SecondWindow_Load(object sender, EventArgs e)
{
lblText.ForeColor = Color.FromArgb(random.Next(255),
random.Next(255), random.Next(255));
}
public Color getColor
{
get;
set;
}
}
3.WinForm
public partial class FirstWindow : Form
{
public FirstWindow()
{
InitializeComponent();
}
private void btnQuit_Click(object sender, EventArgs e)
{
this.Close();
}
private void btnClick_Click(object sender, EventArgs e)
{
string str = " ";
SecondWindow secondWindow = new SecondWindow (str);
secondWindow.myEventHandler += new SecondWindowEvent(secondWindow_myEventHandler);
secondWindow.Show();
}
protected void secondWindow_myEventHandler(object sender, FirstWindowEventArgs e)
{
rtf1.AppendText(String.Format(e.Tekst));
}
public void btnClearText_Click(object sender, EventArgs e)
{
rtf1.Text = " ";
}
}
Clarification from comments
I would like the Form to Change the color on close after the button is clicked. This is what I tried:
private void btnRed_Click(object sender, EventArgs e)
{
Color c = Color.Red;
string s = c.ToString();
this.Close();
}

To answer your question, create a property on your Color Form that is set by your button you can then read it after the Form is closed when it returns from your ShowDialog statement.
Form1
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2();
if(frm2.ShowDialog() == DialogResult.OK)
{
//this.BackColor=frm2.getColor; helps if I read the question more closely
richTextBox1.SelectionColor = frm2.getColor;
}
}
}
Form2
public partial class Form2 : Form
{
public Color getColor { get; set; }
public Form2()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
getColor = Color.Red;
DialogResult = DialogResult.OK;
}
}
After playing with the code that you posted and added some missing handlers, it looks like the text of your color is coming in the Format of Color [Red] ColorFromName has no idea how to parse that so you will need to get the actual color name by using String.Split Something like this.
protected void ColorWindow_myEventHandler(object sender, SecondWindowEventArgs e)
{
rtf2.ForeColor = Color.FromName(e.S.Split(new string[]{"[","]"},StringSplitOptions.None)[1]);
}
I also noticed that you are setting your rtf2.ForeColor everytime that your text changes, I removed it and am now able to change the ForeColor of the RichText box. I would be a lot easier/cleaner IMHO if you just passed the actual Color Object instead of changing it to a string and back.
This is the modified TextChanged Method note the commented out rtf2.ForeColor statement it does not belong there.
private void rtf2_TextChanged(object sender, EventArgs e)
{
if (myEventHandler != null)
{
myEventHandler(this, new FirstWindowEventArgs(rtf2.Text.Substring(rtf2.Text.Length -1)));
// rtf2.ForeColor = Color.FromName(e.ToString());
}
}

Text property not changing?

What is happening is, even though the questionNr is set to 1, it's not changing the .Text properties of ans1-4, as well as the questionLabel. Any help would be appreciated. Also as a sub-question, is it possible to do something along the lines of if(ans1.Clicked = true)?
public partial class Form1 : Form
{
int pointCounter = 0;
private SoundPlayer _soundPlayer;
int questionNr = 1;
public Form1()
{
InitializeComponent();
_soundPlayer = new SoundPlayer("song.wav");
}
private void pictureBox1_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("http://www.amazon.com/Chuck-Seasons-One-Five-Blu-ray/dp/B007AFS0N2");
}
private void Form1_Load(object sender, EventArgs e)
{
_soundPlayer.PlayLooping();
}
private void label1_Click(object sender, EventArgs e)
{
}
private void muteButton_Click(object sender, EventArgs e)
{
if (muteButton.Text == "Mute")
{
muteButton.Text = "Unmute";
_soundPlayer.Stop();
}
else
{
muteButton.Text = "Mute";
_soundPlayer.PlayLooping();
}
}
private void playButton_Click(object sender, EventArgs e)
{
ans1.Visible = true;
ans2.Visible = true;
ans3.Visible = true;
ans4.Visible = true;
playButton.Visible = false;
}
public void question()
{
if (questionNr == 1)
{
questionLabel.Text = "What is Chuck's full name?";
ans1.Text = "Charles Irving Bartowski";
ans2.Text = "Charles Richard Bartowski";
ans3.Text = "Charles Luke Bartowski";
ans4.Text = "Zachary Strahovski";
}
}
private void ans1_Click(object sender, EventArgs e)
{
}
private void ans2_Click(object sender, EventArgs e)
{
}
private void ans3_Click(object sender, EventArgs e)
{
}
private void ans4_Click(object sender, EventArgs e)
{
}
}
}

Form where you invoke the question() method. First call that method from where you need.
eg: FormLoad/Button click etc..Then try
public Form1()
{
InitializeComponent();
_soundPlayer = new SoundPlayer("song.wav");
question();
}
It's good if you put a break point in your Form Load event and see how your code executed.Then you'll get an idea about the flow of your code.

Add item to ListView from another class

I've looked up many question on how to do this, but none of them seem to work. I have a ListView on my main view, and I'm populating it from adding data to it from another form. On the other form, I have a couple strings from text fields I'd like to pass to it. Here's my code:
// Add new booking form:
namespace Booker
{
public partial class newBookingForm : Form
{
public newBookingForm()
{
InitializeComponent();
}
private void NewBookingForm_Load(object sender, EventArgs e)
{
roomField.Focus();
}
private void newBookingButton_Click(object sender, EventArgs e)
{
// Add to ListView
// Add to Parse
string room = this.roomField.Text;
string date = this.datePicker.Value.ToShortDateString();
string time = this.timeField.Text;
string person = "<username>"; // Get current Parse user
Booker booker = new Booker();
string[] array = new string[4] { room, date, time, person };
booker.UpdatingListView(array);
this.Hide();
}
}
}
// ListView form:
namespace Booker
{
public partial class Booker : Form
{
delegate void MyDelegate(string[] array);
public Booker()
{
InitializeComponent();
}
protected override void OnFormClosing(FormClosingEventArgs e)
{
base.OnFormClosing(e);
Environment.Exit(0);
}
private void Booker_Load(object sender, EventArgs e)
{
listView.View = View.Details;
listView.AllowColumnReorder = false;
}
/* Methods for the Booker form */
private void newBookingButton_Click(object sender, EventArgs e)
{
newBookingForm nbf = new newBookingForm();
nbf.Show();
}
public void UpdatingListView(string[] array)
{
if (this.listView.InvokeRequired)
this.listView.Invoke(new MyDelegate(UpdatingListView), new object[] { array });
else
{
ListViewItem lvi = new ListViewItem(array[0]);
lvi.SubItems.Add(array[1]);
this.listView.Items.Add(lvi);
}
}
private void exitButton_Click(object sender, EventArgs e)
{
// Error - no action being sent
}
private void helpButton_Click(object sender, EventArgs e)
{
// Display help panel
}
private void contactButton_Click(object sender, EventArgs e)
{
// Open panel/email
}
private void newBooking_Click(object sender, EventArgs e)
{
newBookingButton_Click(sender, e);
//string[] row = { "Meeting room", "April 11, 2013", "12:00PM-1:00PM", "Ryan" };
//var listViewItem = new ListViewItem(row);
//listView.Items.Add(listViewItem);
}

Try this in UpdatingListView:
ListViewItem lvi = new ListViewItem(array[0],0);
lvi.SubItems.Add(array[1]);
lvi.SubItems.Add(array[2]);
lvi.SubItems.Add(array[3]);
this.listView.Items.Add(lvi);
This will create a column in the first position of your ListView with the 4 items of your array as rows in that column.

To add items from another class, just access the other class' method to add from Program. Like this:
// Class we're adding from:
string name = "Ryan";
string site = "imryan.net";
string[] array = new string[2] = { name, site };
Program.classWithListView.UpdatingListView(array);
// Class we're adding to:
public void UpdatingListView(string[] array)
{
if (this.listView.InvokeRequired)
{
this.listView.Invoke(new MyDelegate(UpdatingListView), new object[] { array });
} else {
ListViewItem lvi = new ListViewItem(array[0]);
lvi.SubItems.Add(array[1]);
lvi.SubItems.Add(array[2]);
this.listView.Items.Add(lvi);
}
}
The string array will be added to the ListView as SubItems.