i try to save user settings in c#.
I can read the value and put it in a textbox but i can not change it.
This is my WindowsForm with an textbox and a save button:
namespace tool
{
public partial class Form4 : Form
{
string source = Properties.Settings.Default.Source;
public Form4()
{
InitializeComponent();
}
private void Form4_Load(object sender, EventArgs e)
{
textBox1.Text = source;
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void save_Click(object sender, EventArgs e)
{
Properties.Settings.Default.Source = source;
Properties.Settings.Default.Save();
Application.Exit();
}
}
}
And here is a picture with my settings:
I hope someone as an idea :-)
Thanks for help
Try this:
private void save_Click(object sender, EventArgs e)
{
Properties.Settings.Default.Source = textBox1.Text;
Properties.Settings.Default.Save();
Application.Exit();
}
You need to use what is currently in the text box, not your member variable.
Or you can change this event to be as follows (and then you don't have to modify the above):
private void textBox1_TextChanged(object sender, EventArgs e)
{
source = textBox1.Text;
}
could you possibly have a read lock being applied to the key you're looking at while testing this? Maybe the code's not the problem?
Related
I wrote a code in Windows form with a checkbox that enable an Update button when the user check. Now, I am required to change the code into WPF because of UI requirement. How can I convert this code below into a working format in WPF.
private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
License_agreement();
}
private void License_agreement()
{
updatebutton.Enabled = checkBoxforupdate.Checked;
}
My attempted codes is below:
private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
checkboxlincense.IsChecked = true;
}
private void License_agreement()
{
updatebutton.Enabled = checkboxlincense.Checked;
}
I would do it in the XAML rather than the code behind.
Set the Button's IsEnabled="{Binding ElementName=checkboxlincense, Path=IsChecked}"
I figured out how to do it. I just needed to Disable the Update button initially in the property section such as: IsEnabled="False".
Change
private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
checkboxlincense.IsChecked = true;
}
...to:
private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
checkboxlincense.IsChecked = true;
License_agreement();
}
private void License_agreement()
{
updatebutton.Enabled = checkboxlincense.IsChecked;
}
I will leave it to you to simplify but this closest matches your original code.
I am creating a library application with a listbox containing a list of books on the main form. I have created an edit form for the books. I want to be able to change the contents of the selected item in the listbox by changing the text in the textboxes of the edit form. Any suggestions how I could do this?
Main form:
private void lstBooks_SelectedIndexChanged(object sender, EventArgs e)
{
string currentBook = lstBooks.SelectedItem.ToString();
}
private void btnEdit_Click(object sender, EventArgs e)
{
lstBooks_SelectedIndexChanged(null, null);
frmEditBook tempEditBook = new frmEditBook(lstBooks);
tempEditBook.Show();
frmkeepBookstore.Hide();
}
Edit form:
private void frmEditBook_Load(object sender, EventArgs e)
{
txtName.Text = listBoxBooks.SelectedItem.ToString();
}
private void btnSave_Click(object sender, EventArgs e)
{
listBoxBooks.Items.Add(txtName.Text.Replace);
frmBookstore.frmkeepBookstore.Show();
this.Close();
}
In your edit form, have a public property for your text
public string NewText
{
get
{
return txtName.Text;
}
}
And then when changing the item in the listbox, simply use the following procedure.
private void btnEdit_Click(object sender, EventArgs e)
{
//Your code from above
lstBooks_SelectedIndexChanged(null, null);
frmEditBook tempEditBook = new frmEditBook(lstBooks);
tempEditBook.Show();
frmkeepBookstore.Hide();
//My line
lstBooks.Items[lstBooks.SelectedIndex] = tempEditBook.NewText;
}
Well, it could be very simple if you call the new form with ShowDialog() instead of Show(). In your frmEditBook you should define the property
public string Txt {get; set;}
and set it at btnSave_Click
private void btnSave_Click(object sender, EventArgs e)
{
listBoxBooks.Items.Add(txtName.Text);
Txt = txtName.Text;
frmBookstore.frmkeepBookstore.Show();
this.Close();
}
and use the variable after the edit form is closed:
private void btnEdit_Click(object sender, EventArgs e)
{
lstBooks_SelectedIndexChanged(null, null);
frmEditBook tempEditBook = new frmEditBook(lstBooks);
tempEditBook.ShowDialog();
//tempEditBook.Txt here is your text
lstBooks.SelectedItem = tempEditBook.Txt;
frmkeepBookstore.Hide();
}
First, pardon my new-ness, I just started coding class recently. Now, upon startup, I want parts of my form (c#) to not be shown, however when I put
NameDisplay.Visible = false;
(NameDisplay being the label I wish to hide) into my Form1.cs it gives me the error of that it is a 'field' being used as a 'type'. How do I correct this, and apply to other object types (buttons, textboxes, etc?)
EDIT 1-
Code- as it stands
namespace ATM
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Label NameDisplay;
NameDisplay.Visible = false;
private void Form1_Load(object sender, EventArgs e)
{
}
private void StartButton_Click(object sender, EventArgs e)
{
}
private void NameDisplay_Click(object sender, EventArgs e)
{
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
}
}
Remove Label NameDisplay;, and place NameDisplay.Visible = false; into your FormLoad event.
The loading of a form is an event just like clicking a button, and will execute the code like so.
Also, when I hide labels, I use .Hide(), but I believe that only works on WinForms.
Hope this helps!
You need to drag and drop the Label on the form and object will be created and initialized automatically in InitializeComponent.
In the form constructor (after InitializeComponent function) or Form_Load event, you may set the visibility to false
For example:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
NameDisplay.Visible = false;
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void StartButton_Click(object sender, EventArgs e)
{
}
private void NameDisplay_Click(object sender, EventArgs e)
{
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
}
Alrighty. Here is my problem. I have just about everything done. I just need to take input from the form, and then use it in an algorithm in the second form. I have everything else written up, I just need to know how to connect the 2 so I can write up the last of the code. I've done some research, but none of it seems to go with what I'm trying to do.
Here is the main form.
namespace Airplanes
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
}
private void Arrival_Click(object sender, EventArgs e)
{
ArrivalForm newForm;
newForm = new ArrivalForm();
newForm.ShowDialog();
}
private void Fuel_Click(object sender, EventArgs e)
{
Fuelform newForm2;
newForm2 = new Fuelform();
newForm2.ShowDialog();
}
private void Status_Click(object sender, EventArgs e)
{
}
private void Items_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void NameBox_TextChanged(object sender, EventArgs e)
{
}
private void FuelBox_TextChanged(object sender, EventArgs e)
{
}
private void GateBox_TextChanged(object sender, EventArgs e)
{
}
private void Singlebutton_CheckedChanged(object sender, EventArgs e)
{
}
private void PrivateButton_CheckedChanged(object sender, EventArgs e)
{
}
private void CommercialButton_CheckedChanged(object sender, EventArgs e)
{
}
}
}
And here is the form I'm trying to connect to the main form.
namespace Airplanes
{
public partial class Fuelform : Form
{
public Fuelform()
{
InitializeComponent();
}
private void label1_Click(object sender, EventArgs e)
{
}
private void Fuelform_Load(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
}
}
}
Thanks in advance for any answers.
There are a couple of ways...the easiest would probably be to pass the data in through the constructor of your new form.
FuelForm newForm2 = new FuelForm(myData);
And then change the constructor for your FuelForm:
public FuelForm(int myData) // or whatever data type you need
{
// Deal with myData
}
In Source form
destinationForm df = new destinationForm ();
df .myValue= "My Value";
df .ShowDialog();
in Destination Form
private string destVariable;
public string myValue
{
get { return destVariable; }
set { destVariable= value; }
}
then you can use destVariable everywhere in destination form
I can't write in richTextBox or the textBox , whenever I start to write something it freezes my program. Any idea what it is ? I haven't changed anything in code or properties of the textBox.
using System.Text;
using System.Windows.Forms;
using System.IO;
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
File.WriteAllText("TextFile1.txt", richTextBox1.Text);
}
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
richTextBox1.LoadFile ("TextFile1.txt");
}
}
It looks like you are loading a file into the text box that you are writing in:
So get rid of this piece of code:
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
richTextBox1.LoadFile ("TextFile1.txt");
}
Try moving it into the OnLoad method of the form (assuming you want the text box populated when the form opens):
protected override void OnLoad(EventArgs e) {
base.OnLoad(e);
richTextBox1.LoadFile ("TextFile1.txt");
}
The RichTextBox also has a SaveFile method. It's not clear from your code if the "rich" text is important to the application.
bool _isLoading = false;
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
if(_isLoading) return;
_isLoading = true;
richTextBox1.LoadFile ("TextFile1.txt");
_isLoading = false;
}