Button in a different file than the main

Button in a different file than the main - c#

I have 2 button but they need to be in a different file than the mainWindow.cs.
I can't figure how to do that.
So the Button_Click_2 must be in the ReadData.cs and the
Button_Click_3 must be in the WriteData.cs
The app don't recognize the button when they are not in the mainWindow.
How can I do that ?
ReadData.cs :
public new void Button_Click_2(object sender, RoutedEventArgs e)
{
string text = verifyCard("5"); // 5 - is the block we are reading
textBlock1.Text = text.ToString();
}
MainWindow.xaml.cs :
public void Button_Click_2(object sender, RoutedEventArgs e)
{
//When I click it don't detected the code in the ReadData.cs
// The code of the button must be in the ReadData.cs
}
MainWindow.xaml :
<Grid>
<Button Content="Connexion" HorizontalAlignment="Left"
Margin="265,142,0,0" VerticalAlignment="Top" Width="236" Height="44"
Click="Button_Click_1"/>
<Button Content="Lire donnée carte" HorizontalAlignment="Left"
Margin="265,276,0,0" VerticalAlignment="Top" Width="236" Height="42"
Click="Button_Click_2"/>
<Button Content="Ecrire donnée carte" HorizontalAlignment="Left"
Margin="265,344,0,0" VerticalAlignment="Top" Width="236" Height="41"
Click="Button_Click_3"/>
<TextBox Name="textBox1" HorizontalAlignment="Left" Height="23"
Margin="321,224,0,0" TextWrapping="Wrap" Text="TextBox"
VerticalAlignment="Top" Width="120" TextChanged="TextBox_TextChanged"/>
<TextBlock Name="textBlock1" HorizontalAlignment="Left"
Margin="291,95,0,0" TextWrapping="Wrap" VerticalAlignment="Top"
Height="23" Width="177"/>
</Grid>
It must be possible to forced the app to detected and execute the code in another file than the Main.
I'm stuck... do any of you have the solution ?

You can't just place the button code in ReadData.cs class. as the event is related to ui of MainWindow.xaml create an object for ReadData do something like this
public new void Button_Click_2(object sender, RoutedEventArgs e)
{
ReadData rd= new ReadData();
string text = rd.verifyCard("5");
textBlock1.Text = text.ToString();
}

Related

My first project using C# & WPF - how to set a variable from .xaml.cs to appear in the textbox?

I'm trying to build a calculator with C# and WPF.
The purpose is to learn and test new things.
Here's the code:
XAML
<Window x:Class="calculator.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:calculator"
mc:Ignorable="d"
Title="MainWindow" Height="400" Width="400">
<Grid>
<Button Content="9" HorizontalAlignment="Left" Margin="295,224,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click9"/>
<Button Content="8" HorizontalAlignment="Left" Margin="166,224,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click8"/>
<Button Content="7" HorizontalAlignment="Left" Margin="37,224,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click7"/>
<Button Content="6" HorizontalAlignment="Left" Margin="295,254,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click6"/>
<Button Content="5" HorizontalAlignment="Left" Margin="166,254,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click5"/>
<Button Content="4" HorizontalAlignment="Left" Margin="37,254,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click4"/>
<Button Content="3" HorizontalAlignment="Left" Margin="295,285,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click3"/>
<Button Content="2" HorizontalAlignment="Left" Margin="166,285,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click2"/>
<Button Content="1" HorizontalAlignment="Left" Margin="37,285,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="Button_Click1"/>
<Button Content="0" HorizontalAlignment="Left" Margin="37,316,0,0" VerticalAlignment="Top" Width="321" FontFamily="Arial" Click="Button_Click0"/>
<TextBox HorizontalAlignment="Left" Height="35" Margin="37,49,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="321" FontFamily="Arial" FontSize="20" TextAlignment="Right"/>
<Button Content="Calculate!" HorizontalAlignment="Left" Margin="154,10,0,0" VerticalAlignment="Top" Width="75"/>
<Button Content="+" HorizontalAlignment="Left" Margin="37,125,0,0" VerticalAlignment="Top" Width="68" Height="57" Click="Button_Click_Add"/>
<Button Content="/" HorizontalAlignment="Left" Margin="290,125,0,0" VerticalAlignment="Top" Width="68" Height="57" Click="Button_Click_Multiply"/>
<Button Content="*" HorizontalAlignment="Left" Margin="206,125,0,0" VerticalAlignment="Top" Width="69" Height="57" Click="Button_Click_Divide"/>
<Button Content="-" HorizontalAlignment="Left" Margin="122,125,0,0" VerticalAlignment="Top" Width="68" Height="57" Click="Button_Click_Subtract"/>
</Grid>
</Window>
XAML.CS
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace calculator
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
List<int> lista = new List<int>();
string number = "";
int res = 0;
private void Button_Click_Add(object sender, RoutedEventArgs e)
{
int numberCreated;
try
{
numberCreated = Int32.Parse(number);
lista.Add(numberCreated);
}
catch (Exception)
{
MessageBox.Show("Number could not be added!");
}
number = "";
if(lista.Count != 0)
{
foreach(var element in lista)
{
res += element;
}
lista.Clear();
}
MessageBox.Show(res.ToString());
}
private void Button_Click_Subtract(object sender, RoutedEventArgs e)
{
try
{
int numberCreated = Int32.Parse(number);
lista.Add(numberCreated);
}
catch(Exception)
{
MessageBox.Show("Number could not be added!");
}
number = "";
if (lista.Count != 0)
{
foreach (var element in lista)
{
res -= element;
}
lista.Clear();
}
MessageBox.Show(res.ToString());
}
private void Button_Click_Multiply(object sender, RoutedEventArgs e)
{
try
{
int numberCreated = Int32.Parse(number);
lista.Add(numberCreated);
}
catch (Exception)
{
MessageBox.Show("Number could not be added!");
}
number = "";
if (lista.Count != 0)
{
foreach (var element in lista)
{
res *= element;
}
lista.Clear();
}
MessageBox.Show(res.ToString());
}
private void Button_Click_Divide(object sender, RoutedEventArgs e)
{
try
{
int numberCreated = Int32.Parse(number);
lista.Add(numberCreated);
}
catch (Exception)
{
MessageBox.Show("Number could not be added");
}
number = "";
if (lista.Count != 0)
{
foreach (var element in lista)
{
res /= element;
}
lista.Clear();
}
MessageBox.Show(res.ToString());
}
private void Button_Click9(object sender, RoutedEventArgs e)
{
number += "9";
}
private void Button_Click8(object sender, RoutedEventArgs e)
{
number += "8";
}
private void Button_Click7(object sender, RoutedEventArgs e)
{
number += "7";
}
private void Button_Click6(object sender, RoutedEventArgs e)
{
number += "6";
}
private void Button_Click5(object sender, RoutedEventArgs e)
{
number += "5";
}
private void Button_Click4(object sender, RoutedEventArgs e)
{
number += "4";
}
private void Button_Click3(object sender, RoutedEventArgs e)
{
number += "3";
}
private void Button_Click2(object sender, RoutedEventArgs e)
{
number += "2";
}
private void Button_Click1(object sender, RoutedEventArgs e)
{
number += "1";
}
private void Button_Click0(object sender, RoutedEventArgs e)
{
number += "0";
}
}
}
I'm open to any tips and ideas you might give to an absolute beginner.
The reason I'm posting this is because I don't know how to make the "res" variable appear in the TextBox after each operation.
I saw online many people talking about TextBox.text, but I don't know how to use it.
Probably I have to use it in .xaml.cs, but how can I define TextBox? How will my program know which TextBox I want the text to be applied to?
Also, I feel like there's a better approach to create a number using the buttons rather than creating 10 separate functions (from button_click0 to button_click9) and I'd like to hear some ideas.
Thanks!

There are several ways to do this, e.g. Data Binding.
But I guess for learning, since this is your very first step in WPF, you should start more easy.
To access a control via code, you have to give it a name in XAML:
<TextBox x:Name="TxtResult" HorizontalAlignment="Left" Height="35" Margin="37,49,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="321" FontFamily="Arial" FontSize="20" TextAlignment="Right"/>
By that, you can access your Textbox in Code:
private void Button_Click9(object sender, RoutedEventArgs e)
{
number += "9";
this.TxtResult.Text = number;
}
EDIT to answer your last question:
Also for this there are many ways how to make it better or easier. If you want, you can do some research about Commands, Command Parameters and Command Bindings.
But for this simple Demo case, you can simply use the same event handler for all number buttons:
private void ButtonNumberClick(object sender, RoutedEventArgs e)
{
number += ((Button) sender).Content;
this.TxtResult.Text = number;
}
The sender parameter contains the UI object that triggered the event handler, so you'll get a reference to the button that was clicked. And since the Content property of each button already contains the number you want to add to your string, you can grab it from there and append it to the number string.
Now in XAML you just have to assign that event handler to all ten buttons:
<Button Content="9" HorizontalAlignment="Left" Margin="295,224,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="8" HorizontalAlignment="Left" Margin="166,224,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="7" HorizontalAlignment="Left" Margin="37,224,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="6" HorizontalAlignment="Left" Margin="295,254,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="5" HorizontalAlignment="Left" Margin="166,254,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="4" HorizontalAlignment="Left" Margin="37,254,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="3" HorizontalAlignment="Left" Margin="295,285,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="2" HorizontalAlignment="Left" Margin="166,285,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="1" HorizontalAlignment="Left" Margin="37,285,0,0" VerticalAlignment="Top" Width="63" FontFamily="Arial" Click="ButtonNumberClick"/>
<Button Content="0" HorizontalAlignment="Left" Margin="37,316,0,0" VerticalAlignment="Top" Width="321" FontFamily="Arial" Click="ButtonNumberClick"/>

WPF return value from checkbox unchecked event

How can I return a value from when check-box is unchecked? I noticed that you need to create a converter but is there an easer way of doing that?
XAML
<Grid>
<TextBox x:Name="textBox4" Visibility="Hidden" HorizontalAlignment="Left" Height="23" Margin="149,135,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="43" TextChanged="textBox4_TextChanged"/>
<CheckBox x:Name="checkBox" Content="Party?(4 or more)" HorizontalAlignment="Left" Margin="33,135,0,0" VerticalAlignment="Top" Checked="checkBox_Checked" Width="116" Height="23"/>
</Grid>
C#
private void checkBox_Checked(object sender, RoutedEventArgs e)
{
Handle(sender as CheckBox);
}
private void checkBox_Unchecked(object sender, RoutedEventArgs e)
{
Handle(sender as CheckBox);
}
void Handle(CheckBox checkBox)
{
bool chkd = checkBox.IsChecked.Value;
if (chkd)
{
textBox4.Visibility = Visibility.Visible;
textBox6.IsEnabled = IsEnabled.Equals(false);
}
else
{
textBox4.Visibility = Visibility.Hidden;
}

Add a handler for the Unchecked event in your XAML, and your code will get called.
Snippet:
Unchecked="checkBox_Unchecked"
Complete:
<CheckBox x:Name="checkBox" Content="Party?(4 or more)" HorizontalAlignment="Left" Margin="33,135,0,0" VerticalAlignment="Top" Checked="checkBox_Checked" Unchecked="checkBox_Unchecked" Width="116" Height="23"/>
When working with controls/events and to help discover what is available, see the Properties window and Events as in the below image:

WPF DragEnter not firing on Image

I have an image that is inside of a tab item:
<TabItem x:Name="tabThreeTb" Header="Photos" HorizontalAlignment="Left" Height="22" VerticalAlignment="Top" Width="55" Margin="1,0,-1,0">
<Grid x:Name="tabThreeBdy" Background="#FFE5E5E5">
<Rectangle Fill="#FFE5E5E5" HorizontalAlignment="Left" Height="369" Margin="12,13,0,0" Stroke="Black" VerticalAlignment="Top" Width="467">
<Rectangle.Effect>
<DropShadowEffect/>
</Rectangle.Effect>
</Rectangle>
<TextBox x:Name="picNotesTextBox" HorizontalAlignment="Left" Height="415" Margin="498,10,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="299"/>
<Button x:Name="nxtPhotoBtn" Content="Next" HorizontalAlignment="Left" Margin="404,403,0,0" VerticalAlignment="Top" Width="75"/>
<Button x:Name="prevPhotoBtn" Content="Prev" HorizontalAlignment="Left" Margin="10,403,0,0" VerticalAlignment="Top" Width="75"/>
<Label x:Name="photoNumLbl" Content="1 of 4" HorizontalAlignment="Left" Margin="226,401,0,0" VerticalAlignment="Top" Width="42"/>
<Image x:Name="photoTabImage" HorizontalAlignment="Left" Height="369" Margin="12,13,0,0" VerticalAlignment="Top" Width="467" AllowDrop="True" DragEnter="photoTabImage_DragEnter"/>
</Grid>
</TabItem>
I am trying to use drag and drop to allow for the addition of photos to to the list that contains paths for the image source, though I can't seem to be able to fire the DragEnter routine...
I would like the drag and drop functionality to only be alive when the content is being dragged over the Image bounds.
Is there something I need to do for an Item that is nested in a tab control to allow this?

The issue is in that your app for some reason can't proceed standard events set. To fix that switch it to the tunneling model, by simply replacing your events on Preview versions (for instance replace DragEnter="photoTabImage_DragEnter" on to the PreviewDragEnter="photoTabImage_DragEnter")
Best regards,
Maks!

try add
<Label HorizontalAlignment="{Binding ElementName=photoTabImage, Path=HorizontalAlignment}"
Height="{Binding ElementName=photoTabImage, Path=Height}"
Width="{Binding ElementName=photoTabImage, Path=Width}"
Margin="{Binding ElementName=photoTabImage, Path=Margin}"
VerticalAlignment="{Binding ElementName=photoTabImage, Path=VerticalAlignment}"
AllowDrop="True" Drop="ContainerDrop" DragOver="ContainerDragOver"/>
after Image, and use event DragOver
if you need analyze drop object then add next code inside you class
private void ContainerDrop(object sender, DragEventArgs e)
{
StringBuilder sb = new StringBuilder();
foreach (string format in e.Data.GetFormats())
{
sb.AppendLine("Format:" + format);
try
{
object data = e.Data.GetData(format);
sb.AppendLine("Type:" + (data == null ? "[null]" : data.GetType().ToString()));
sb.AppendLine("Data:" + data.ToString());
}
catch (Exception ex)
{
sb.AppendLine("!!CRASH!! " + ex.Message);
}
sb.AppendLine("=====================================================");
}
Console.WriteLine(sb.ToString());
}
private void ContainerDragOver(object sender, DragEventArgs e)
{
e.Effects = DragDropEffects.Copy;
e.Handled = true;
}

Get content of Current Button

<Button Name="btn1" Content="1" HorizontalAlignment="Left" Margin="13,127,0,0" VerticalAlignment="Top" Click="Button_Click"/>
<Button Name="btn2" Content="2" HorizontalAlignment="Left" Margin="135,124,0,0" VerticalAlignment="Top" Click="Button_Click"/>
How do i get the content of the current button with just one function call?

try this:
private void Button_Click(object sender, RoutedEventArgs e)
{
Button obj = (Button)sender;
MessageBox.Show(obj.Content.ToString());
}

Convert rtf to xaml in silverlight

I want to load a rtf file in silverlight using RichTextBox control but this control doesn't load file in proper format. can anyone tell how to do so or convert rtf to xaml?
Here's the xaml :
<Grid x:Name="LayoutRoot" Height="480" Width="640">
<RichTextBox HorizontalAlignment="Left" Margin="89,64,0,0" Name="rtb" VerticalAlignment="Top" Height="301" Width="416"/>
<Button Content="Select File" Height="23" HorizontalAlignment="Left" Margin="268,12,0,0" Name="btnSelect" VerticalAlignment="Top" Width="75" Click="btnSelect_Click" />
<TextBlock Height="23" HorizontalAlignment="Left" Margin="10,10,0,0" Name="textBlock1" Text="FileName:" VerticalAlignment="Top" Width="73" />
<TextBox Height="23" HorizontalAlignment="Left" Margin="89,12,0,0" Name="txtFile" VerticalAlignment="Top" Width="164" />
<Button Content="Reset" Height="23" HorizontalAlignment="Left" Margin="430,385,0,0" Name="btnReset" VerticalAlignment="Top" Width="75" Click="btnReset_Click" IsEnabled="False" />
</Grid>
Code behind :
private void btnSelect_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog odlg = new OpenFileDialog();
odlg.Filter = "Text files|*.rtf";
odlg.Multiselect = false;
string contents = null;
if ((bool)odlg.ShowDialog())
{
txtFile.Text = odlg.File.Name;
StreamReader reader = new StreamReader(odlg.File.OpenRead());
while (!reader.EndOfStream)
{
contents = reader.ReadToEnd();
}
reader.Close();
rtb.Selection.Text = contents;
btnReset.IsEnabled = true;
}
}
private void btnReset_Click(object sender, RoutedEventArgs e)
{
txtFile.Text = "";
rtb.Blocks.Clear();
}

Develop Reference

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Button in a different file than the main - c#

Related

My first project using C# & WPF - how to set a variable from .xaml.cs to appear in the textbox?

WPF return value from checkbox unchecked event

WPF DragEnter not firing on Image

Get content of Current Button

Convert rtf to xaml in silverlight

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