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how to call value that called from DB by array in form1 and used it to make condition in form2 by C#

i make class for table in my DB
namespace WindowsFormsApp1.Database {
class Ques
{
public int id;
public string title;
public Illnesses(int id,string title)
{
this.id = id;
this.title = title;
}
public static Ques[] getAll()
{
Ques[] arr = new Ques[100];
connection con1 = new connection();
MySqlCommand command = new MySqlCommand("SELECT * FROM ques;", con1.mycon());
MySqlDataReader reader = command.ExecuteReader();
int counter = 0;
while (reader.Read())
{
Ques= new Ques(reader.GetInt32(0), reader.GetString(1));
arr[counter++] = temp;
}
con1.con.Close();
return arr;
}
} }
and in form1 i called my Table Rows in database by Array to show in button name like text when i run the program and this work perfectly then transfer me to form2
namespace WindowsFormsApp1 {
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
Ques[] ques= Ques.getAll();
button1.Text = ques[0].title;
button2.Text = ques[1].title;
}
private void button1_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2();
f2.Show();
this.Hide();
}
private void button2_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2();
f2.Show();
this.Hide();
}
} }
And This is The Run,
The Problem is i need to make if condition in form2 depend on (button 1, 2 OR rows i called from DB in buttons) That in from1
To output different result in my Form2
my Form2
namespace WindowsFormsApp1 {
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
Form1 form1 = new Form1();
}
private void Form2_Load(object sender, EventArgs e)
{
Ques[] ques= Ques.getAll();
if (???????????)
{
button1.Text = ques[2].title;
label1.Text = "this is ans Q1";
}
else if (????????????)
{
button1.Text = ques[3].title;
label1.Text = "this is ans Q2";
}
}
shape of form 2
So what i should write in condition of form2 (place of question marks ??????????)
Thank everyone who can help :)

We can determine which button is clicked and button text is equal to the question text to write the condition.
You could define some property or fields in the form1. Then you could use Application.OpenForms method to access the property.
Key code:
form1.btn1text== "This is my q1" && form1.bt1clicked==true
form1.btn2text == "This is my q2" && form1.bt2clicked == true
Here is a code example you could refer to.
Form1:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public string btn1text { get; set; }
public string btn2text { get; set; }
public bool bt1clicked = false;
public bool bt2clicked = false;
private void button1_Click(object sender, EventArgs e)
{
bt1clicked = true;
Form2 f2 = new Form2();
f2.Show();
this.Hide();
}
private void button2_Click(object sender, EventArgs e)
{
bt2clicked = true;
Form2 f2 = new Form2();
f2.Show();
this.Hide();
}
private void Form1_Load(object sender, EventArgs e)
{
Ques[] ques = Ques.getAll();
button1.Text = ques[0].title;
button2.Text = ques[1].title;
btn1text = button1.Text;
btn2text = button2.Text;
}
Form2:
private void Form2_Load(object sender, EventArgs e)
{
Form1 form1 = (Form1)Application.OpenForms["Form1"];
Ques[] ques = Ques.getAll();
if (form1.btn1text== "This is my q1" && form1.bt1clicked==true)
{
button1.Text = ques[2].title;
label1.Text = "this is ans Q1";
}
else if (form1.btn2text == "This is my q2" && form1.bt2clicked == true)
{
button1.Text = ques[3].title;
label1.Text = "this is ans Q2";
}
}
Tested result:

The name "svar" does not exist in the current context

I'm very new to programming and I am writing a short hangman game for my programming class, I have two private voids, one when you change the text in the textbox for the correct answer and one for when you guess a character. I need to transfer the variable "svar" from the first instance to the other, when I try to use the variable "svar" in the second instance I get the error message "The name "svar" does not exist in the current context"
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void TbxSvar_TextChanged(object sender, EventArgs e)
{
if (tbxSvar.TextLength == 6)
{
pbxGubbe.Top = 6;
tbxVisa.Text = "??????";
tbxGissa.Enabled = true;
string svar = tbxSvar.Text;
tbxSvar.Text = "";
}
else
{
tbxVisa.Text = "";
}
}
private void TbxGissa_TextChanged(object sender, EventArgs e)
{
if (tbxGissa.Text == "") return;
string gissning = tbxGissa.Text;
int index = svar.indexOf(gissning);
}
}

You have defined svar as a variable in a method so it won't be visible elsewhere (unless you pass it as a method argument). Instead define it as a field in your class.
public partial class Form1 : Form
{
string svar; // <----------- place here. Now it is a 'field'
public Form1()
{
InitializeComponent();
}
private void TbxSvar_TextChanged(object sender, EventArgs e)
{
if (tbxSvar.TextLength == 6)
{
pbxGubbe.Top = 6;
tbxVisa.Text = "??????";
tbxGissa.Enabled = true;
svar = tbxSvar.Text; // <---------- use svar here
tbxSvar.Text = "";
}
else
{
tbxVisa.Text = "";
}
}
private void TbxGissa_TextChanged(object sender, EventArgs e)
{
if (tbxGissa.Text == "") return;
string gissning = tbxGissa.Text;
int index = svar.indexOf(gissning); // <---------- ...and here
}
}

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);
}
}

c# values don't work correctly

I'm new to c# and I tried making a simple program. After I click the button, the values won't update with their actual value, so I have to click twice to make them actually work. Here's my code:
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private static int p;
private static int money;
public Form1()
{
InitializeComponent();
p = 0;
money = 100;
}
private void button1_Click(object sender, EventArgs e)
{
m.Text = money.ToString();
ex.Text = p.ToString();
if (checkBox1.Checked && checkBox2.Checked)
{
MessageBox.Show("You cannot select both.", "Nope");
}
else if (checkBox1.Checked)
{
p += 2;
}
else if (checkBox2.Checked)
{
money -= 50;
p += 10;
}
else
{
return;
}
}
}
}

You need to update the text after updating the value
if (checkBox1.Checked & checkBox2.Checked)
{
MessageBox.Show("You cannot select both.", "Nope");
}
....
m.Text = money.ToString();
ex.Text = p.ToString();

How to access Parameter Value of public method inside private method

can I pass EditQuestionMaster(int qid_value) this qid_value ,within this private void button1_Click(object sender, EventArgs e) button click ,if yes than how can i do this so that I can UpdateQuestion properly
public partial class EditQuestionMaster : Form
{
DbHandling db = new DbHandling();
public EditQuestionMaster(int qid_value)
{
InitializeComponent();
string subNtop = db.GetEditSubNTopic(qid_value);
string[] subNtopData = subNtop.Split('~');
cmbSubject.Text = subNtopData[2];
}
private void button1_Click(object sender, EventArgs e)
{
int qid = ; //here i want the value of int qid_value
string AnsOp = "";
if (radioButton1.Checked == true)
AnsOp = "1";
else if (radioButton2.Checked == true)
AnsOp = "2";
else if (radioButton3.Checked == true)
AnsOp = "3";
else if (radioButton4.Checked == true)
AnsOp = "4";
else
{
MessageBox.Show("Answer Option Not Selected");
return;
}
string Marks = cmbMarks.SelectedItem.ToString();
if (db.UpdateQuestion(qid, txtQuestion.Text, txtOption1.Text, txtOption2.Text, txtOption3.Text, txtOption4.Text, AnsOp, Marks, "T"))
MessageBox.Show("Question Updated Successfully");
else
MessageBox.Show("Failed to Update Question");
}
}
thanks in advance for any help

public partial class EditQuestionMaster : Form
{
DbHandling db = new DbHandling();
int qid; // here is the class variable
public EditQuestionMaster(int qid_value)
{
InitializeComponent();
this.qid = qid_value; // set the value here
string subNtop = db.GetEditSubNTopic(qid_value);
string[] subNtopData = subNtop.Split('~');
cmbSubject.Text = subNtopData[2];
}
private void button1_Click(object sender, EventArgs e)
{
qid // use it here

Expanding on chancea's answer:
You can define a business object to handle the updates like so:
public class QuestionEditor
{
DbHandling db = new DbHandling();
int questionId;
public QuestionEditor(int questionId)
{
this.questionId = questionId;
}
public void SetAnswer(string answerOption)
{
db.UpdateQuestion(qid, answerOption);
}
}
When your form is created, have it create a new instance of your business object:
public partial class EditQuestionMaster : Form
{
QuestionEditor editor;
public EditQuestionMaster(int qid_value)
{
InitializeComponent();
editor = new QuestionEditor(qid_value);
}
}
Now other methods in your form can call into the editor to perform operations.
private void button1_Click(object sender, EventArgs e)
{
string answerOption;
// switch populates answerOption
editor.SetAnswer(answerOption);
}
By moving your logic to perform updates away from the form where the user interacts is called an abstraction. This abstraction allows the UI code to evolve somewhat independently of how the question data is accessed/stored. This is the basis for n-Tier architecture.