I want to make a program that has a multiline textbox, and the program will read it line by line.
All I need is to get the line into a string, and after I'm finished with that line, it moves on.
How can I do that?
Is there a built in function, like there is the getline() function in c++ and c?
Should I use a normal textbox or a richtextbox?
TextBoxBase.Lines property is what you're looking for.
Per request, here's a sample:
Code:
namespace SomeApp
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
// For each line in the rich text box...
for (int i = 0; i < richTextBox.Lines.Length; i++)
{
// Show a message box with its contents.
MessageBox.Show(richTextBox.Lines[i]);
}
}
}
}
Result:
Related
I am trying to get a value from another form in a text box. When I click on a text box, another form appears that is a numeric keypad and I can enter a number.
What I want is for the textbox I click to get the value of that new form.
How could I do this?
Example:
I have the next textbox:
When I do click on this textbox appears the following form to introduce some numbers:
When I click on the enter button of the second form, I would like to close this form and get the value "78552" into the first textbox.
I am trying putting the textbox of the second form as a public static but is not working.
What could I do?
EDIt:
This is what I am trying:
private void micrasmin_Click(object sender, EventArgs e)
{
Tecladojm t = new Tecladojm();
t.Show();
using (var form = new Tecladojm())
{
//var result = form.ShowDialog();
if (Tecladojm.buttonEnterClicked == true)
{
string val = form.DevolverNumeroMarcado();
micrasmin.Text = val;
}
}
}
There are a number of ways to accomplish this, however I usually do the following.
1) Update your constructor in Form2 to include a parameter as so:
public Form2(string form1Text1, string form1Text2, string form1Text3)
{
InitializeComponent();
this.label1.Text = form1Text;
}
2) In your button click that opens the second form, simply do the following:
private void button1_Click(object sender, EventArgs e)
{
var form2 = new Form2(this.textBox1.Text, this.textBox2.Text, this.textBox3.Text);
form2.Show();
}
That should work for you. Let me know if you have any questions.
I am in the process of writing a vocabulary program. C # Windows Form.
Description of the program operation:
Use the buttons to select the location of text files with the words "PL" and "ENG". (two separate files)
Click the start button to start the program
the first word from the board appears in the label
I'm translating the word into the textbox and the Messagebox "OK" or "WRONG" pops up
And here a problem arises. The program instead of every time I wait until I introduce a new word to the textbox, it loops, the questions in the label are changed and MessageBox displays.
How best to do this to make the program work correctly? `` `[
private void sprawdzButton_Click(object sender, EventArgs e)
{
BazaSlow.bazaPolskichSlowek = _fileReader.Read(adresPlikuPL);
BazaSlow.bazaAngielskichSlowek = _fileReader.Read(adresPlikuANG);
string odpowiedz = odpTextBox.Text;
int i = 0;
while (i < BazaSlow.bazaPolskichSlowek.Length)
{
trescSlowkaLabel.Text = BazaSlow.bazaPolskichSlowek[i];
if (odpowiedz.Equals(BazaSlow.bazaAngielskichSlowek[i].ToLower()))
{
MessageBox.Show("OK");
}
else
{
MessageBox.Show("ŹLE");
}
i++;
}
}
This approach will not quite work.
If you use WinForms then you can do it via events. I'll quickly use english variable names since I don't speak your language.
This could be one approach to do it: I used the "TextChanged" event from the textBox.
string[] wordsLanguage1;
string[] wordsLanguage2;
int currentIndex = 0;
private void Form1_Load(object sender, EventArgs e)
{
wordsLanguage1 = System.IO.File.ReadAllLines("somePath1");
wordsLanguage2 = System.IO.File.ReadAllLines("somePath2");
}
private void ReportAndCheckInput(string input)
{
if (input.ToLower().Equals(wordsLanguage2[currentIndex].ToLower())) {
//right translation
currentIndex++;
label1.Text = wordsLanguage1[currentIndex];
textBox1.Text = "";
}
else
{
//wrong translation
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
ReportAndCheckInput(textBox1.Text);
}
Now this approach uses the TextChanged event. So the ReportAndCheckInput method will be called on every text-change. That means that your Feedback would pop up on every keystroke which would not be nice. You could use any other event instead of TextChanged. For example a button click. Another solution would be to use a label for your feedback and not a message box. Then the user would never have to click anything but woudl instantly see whether or not he was correct.
Visual Studio C #
I made a calculator, and now I have to make a calculator memory (event).
There are 4 components other than the calculator: one Textbox for the answer of the calculator, two Buttons for "M" and "M+", and one Lable to display the answer again.
When the user clicks the “M” button, the contents of the Answer TextBox should be copied to a memory variable. Also make it so that when the user moves the mouse over the label, the value in the memory variable will appear in this label, and then disappear, when the mouse moves away from the label. Also add one more button, an “M+” button. When the user clicks this button, the contents of the Results box will be added to Memory. You will need to use a Global Variable to store this data.
My problem is that the label doesn't appear when the mouse over the label, and also it doens't disappear when the mouse leave the label. How can I fix it?
And also, is this way the right way to use the Global variable?
Below is my code (I just put the code for "M" and "M+" buttons, not the code for the calculator).
private String ans;
private Double answer;
private Double answerPlus;
private void btnM_Click(object sender, EventArgs e)
{
ans = txtDisplay.Text;
answer = double.Parse(ans);
lblblank.Text = answer.ToString();
}
private void lblblank_MouseEnter(object sender, EventArgs e)
{
lblblank.Show();
lblblank.Text = answer.ToString();
}
private void lblblank_MouseLeave(object sender, EventArgs e)
{
lblblank.Hide();
}
private void btnMplus_Click(object sender, EventArgs e)
{
answerPlus = answer + double.Parse(ans);
lblblank.Text = answerPlus.ToString();
}
Storing variables
The way you store your values is fine.
Events
Once you call .Hide() the next MouseEnter/MouseLeave-event will not be triggered anymore. What you could do is to take a panel, or any layout element as a wrapper/parent-element for the label and then adjust your event-callbacks to something like that:
private void panel_MouseEnter(object sender, EventArgs e)
{
lblblank.Show();
lblblank.Text = answer.ToString();
}
private void panel_MouseLeave(object sender, EventArgs e)
{
lblblank.Hide();
}
Edit
~~~
What does it mean that any layout element as a parent-element for the
label? Could you explain more?
What I meant was to just create a new panel (or layout-element) and put the label into it as a child. See the picture below:
If you set that up correctly, the code snippet I posted above will work just fine. This solution does not prevent the MouseLeave event from triggering when your mouse enters the label. Therefore you could use an alternative solution using the MouseMove event.
Alternative
using System;
using System.Windows.Forms;
using System.Drawing;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
this.InitializeComponent();
// Subscribe to the MouseMove event
this.panel.MouseMove += this.panel_MouseMove;
}
private void panel_MouseMove(object sender, MouseEventArgs e)
{
// Checks if current mouse position is within the panel
if (this.panel.Bounds.Contains(new Point(e.X, e.Y)))
{
// Current mouse position within the panel
this.label.Show();
return;
}
// Current mouse position outside the panel
this.label.Hide();
}
}
}
I am struggling to pass data between two forms (all I want to do is have a textbox in Form1, and show that textbox value in textbox1, which is located in Form2). How would I go about this, using WPF? Have looked at quite a few solutions, but cannot seem to get any of them at all to work.
For the form in which I'm wanting to display the values (in tbd.Text), here is the code:
namespace test
{
/// <summary>
/// Interaction logic for OptionDisplayWindow.xaml
/// </summary>
public partial class OptionDisplayWindow : Window
{
public OptionDisplayWindow()
{
InitializeComponent();
tbd.Text = "k"; //want to change this value based on "s" in the other form
}
The form in which the text is transferred from (want to display the string):
public void Button1_Click(object sender, RoutedEventArgs e)
{
string s = "testText"
}
I have tried every single other answer on SO (spent the past 6 hours trying) and have had absolutely no luck.
EDIT 2: Using the method listed as the best answer here Send values from one form to another form I've come up with this code for Form1:
private void ttbtn_Click(object sender, RoutedEventArgs e)
{
using (Form2 form2 = new Form2())
{
tbd.Text = form2.TheValue;
}
}
And the code for Form2:
public string TheValue
{
get { return arrayTest.Text; }
}
However, I'm getting the error 'Form 2': type used in a using statement must be implicitly convertible to 'System.IDisposable'.
The code that you put in the sample project (that you provided as a link in the comments) should be in your question. Given that it becomes much easier to understand what you're trying to do and to give you a workable solution.
I would suggest creating a "DataTransferObject" and pass that between each form.
public class Dto
{
public string Text;
}
The code in MainWindow would then look like this:
private void button1_Click(object sender, RoutedEventArgs e)
{
var dto = new Dto();
window2 win2 = new window2();
win2.Dto = dto;
win2.ShowDialog();
textBox1.Text = dto.Text;
}
And the code in window2 would look like this:
public Dto Dto;
private void textBox2_TextChanged(object sender, TextChangedEventArgs e)
{
if (this.Dto != null)
{
this.Dto.Text = textBox2.Text;
}
}
That is one way - out of about a million - of transferring data between forms. An advantage of using a data transfer object is that it begins you on the road of separating your data from your UI, and that is generally a very good thing to do.
Another simple way to pass data between forms is using your application's settings.
Step 1: Create a setting, open the "Project" menu and pick "test Properties..."
this will take you to the settings page, create a setting name it however you want, I named mine "PassString" and make sure it's a string type and the Scope is set to user.
Step 2. Lets set the string setting to your textbox.text property, add these changes to the code:
private void button1_Click(object sender, RoutedEventArgs e)
{
Properties.Settings.Default.PassString = textBox1.Text;
window2 win2 = new window2();
win2.ShowDialog();
}
Step 3. Update the text on your second window Initialization Process.
public OptionDisplayWindow()
{
InitializeComponent();
tbd.Text = Properties.Settings.Default.PassString;
}
P.S. you may have to add a reference to reach your application settings.
using test.Properties;
I am working on a program that generates a PDF file. Before the final generation of the file, I want to give the user the option to edit a portion of the file (The title of the graph that is about to be created). I want this to show up in a new form when the user clicks a button to export the PDF. Here is an outline of what I am trying to do...
private void button4_Click(object sender, EventArgs e) // Test PDF Code!
{
Form2 NewPDF = new Form2(chart3.Titles[chart3.Titles.IndexOf("Header")].Text.ToString().Substring(0, chart3.Titles[chart3.Titles.IndexOf("Header")].Text.ToString().Length - 4));
NewPDF.Show();
if (NewPDF.Selected == true)
{
// Create PDF, open save file dialog, etc
}
}
And here is the Form that is being opened by this button click...
public partial class Form2 : Form
{
public bool Selected
{
get;
set;
}
public String GraphName
{
get;
set;
}
public Form2(String FileName)
{
InitializeComponent();
textBox1.Text = FileName;
GraphName = FileName;
Selected = false;
}
public void button1_Click(object sender, EventArgs e)
{
GraphName = textBox1.Text;
this.Selected = true; // After the button is selected I want the code written above to continue execution, however it does not!
}
}
As of now, when I click on the button in Form2, nothing happens, there is something about the communication between the two Forms that I am not understanding!
You should change your Form2.GraphName like below
public String GraphName
{
get { return textBox1.Text }
}
then change your new Form2 creation like below, test it since I haven't run this through VS, but should work :)
private void button4_Click(object sender, EventArgs e) // Test PDF Code!
{
// why on earth were you doing .Text.ToString()? it's already string...
Form2 NewPDF = new Form2(chart3.Titles[chart3.Titles.IndexOf("Header")].Text.Substring(0, chart3.Titles[chart3.Titles.IndexOf("Header")].Text.Length - 4));
// show as a dialog form, so it will wait for it to exit, and set this form as parent
NewPDF.ShowDialog(this);
if (NewPDF.Selected == true)
{
// get the name from the other form
string fileName = NewPDF.GraphName;
// Create PDF, open save file dialog, etc
}
}
The answer to your problem is quite simple.
NewPDF.Show();
Show() does not pause execution of the calling form. Therefore, the check underneath that that verifies the Selected property if true will never execute properly, since that check is reached and verified just as the form starts appearing. ShowDialog() does pause execution and waits for the called form to close.
That aside; I would recommend one of two other ways to communicate between forms;
Use a global variable. Declare a variable holding the graph's name somewhere in a public module. Call the dialog that asks the user to input a name with ShowDialog(), since that pauses execution of the calling form until the called form returns a result.
if(Form.ShowDialog() == DialogResult.OK) {
// Save pdf, using title in global variable
}
Make sure to set the DialogResult in the called form before Close()-ing it.
Pass an instance variable of the calling form to the called name-input form to the constructor and save it. That way, if you expose the graph name property as a public property, you should be able to access it from the called form in the code that closes the form, which is your:
public void button1_Click(object sender, EventArgs e)
{
callingFormInstance.GraphNameProperty = textBox1.Text;
Close();
}
Hope that helps. Cheers!