Databinding Progress Bar Not Binding - wpf

Question

I searched a lot for the solution to this, but can't seem to figure it out. (Just saying, this will be a long post)
Preface: This is NOT MVVM
Problem: I have a progress bar. I am currently trying to bind a public double to it from within the xaml's .cs file. However, whenever I use value's bind function, it never works, resulting in iNotifyPropertyChanged not working, etc. etc....
The variable it is bound to serves the purpose of updating the progress bar value. The way that is completed is by setting the value in a separate for loop in another method/class. The value is set by a simple equation. 100 divided by the length of a list, multiplied by the for loops counter. This gives us a real number that can be put into the progress bar value. (code below)
Binder.daWindow.progUpdate = ((100.00 / databaseTables.Length) * dbTIndex);
I know this can be completed by threading (or whatever), but I would appreciate answers specifically for how this might be done by binding (unless it's impossible, then forget what I just said).
XAML:
<Window x:Name="DateWindow1" x:Class="WpfApp1.DateWindow"
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:WpfApp1"
xmlns:Main="using:DateWindow"
mc:Ignorable="d"
Title="Change Dates" Height="232.667" Width="462" Background="#FF2B2B2B" ResizeMode="NoResize">
<Grid>
<TextBox x:Name="DayChangeTextBox" HorizontalAlignment="Left" Height="30" Margin="176,45,0,0" TextWrapping="Wrap" Text="##" VerticalAlignment="Top" Width="58" FontSize="14" TextAlignment="Center" AcceptsReturn="False" AcceptsTab="False" GotFocus="DayChangeTextBox_GotFocus" LostFocus="DayChangeTextBox_LostFocus" BorderThickness="1" BorderBrush="Black" OpacityMask="Black" Background="#FFFDFDFD"/>
<Label Content="Days" HorizontalAlignment="Left" Margin="239,45,0,0" VerticalAlignment="Top" Width="42" FontSize="14" FontFamily="Microsoft YaHei UI" Height="30" Foreground="White"/>
<Label Content="Move Dates Forward:" HorizontalAlignment="Left" Margin="23,45,0,0" VerticalAlignment="Top" Width="144" FontSize="14" FontFamily="Microsoft JhengHei UI Light" Height="30" Foreground="White"/>
<Button x:Name="ChangeDatesButton" Content="Change Dates" HorizontalAlignment="Left" Margin="303,45,0,0" VerticalAlignment="Top" Width="143" Height="30" BorderThickness="1,1,2,3" BorderBrush="#FF474747" Click="ChangeDatesButton_Click" FontFamily="Microsoft YaHei UI" Background="#FFE6E6E6"/>
<Label x:Name="serverLabel" Content="Label" HorizontalAlignment="Left" Margin="10,73,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.5,0.5" Width="5" Height="15" Visibility="Hidden"/>
<Label x:Name="databaseLabel" Content="Label" HorizontalAlignment="Left" Margin="20,73,0,0" VerticalAlignment="Top" Width="3" Visibility="Hidden" Height="15"/>
<Button x:Name="RevertToDefaultButton" Content="Revert to Backup" Margin="23,164,0,0" VerticalAlignment="Top" Height="30" Background="#FFE6E6E6" BorderBrush="#FF474747" BorderThickness="1,1,2,3" Click="RevertToDefaultButton_Click" FontFamily="Microsoft JhengHei UI" HorizontalAlignment="Left" Width="143"/>
<Button x:Name="OverwriteDefaultButton" Content="Backup Database" Margin="23,128,0,0" VerticalAlignment="Top" Height="30" BorderBrush="#FF474747" BorderThickness="1,1,2,3" Click="OverwriteDefaultButton_Click" FontFamily="Microsoft JhengHei UI" HorizontalAlignment="Left" Width="143" Background="#FFE6E6E6" />
<Button x:Name="CloseButton" Content="Close" Margin="0,164,10,0" VerticalAlignment="Top" Height="30" BorderBrush="#FF474747" BorderThickness="1,1,2,3" FontFamily="Microsoft JhengHei UI" Width="60" Click="CloseButton_Click" HorizontalAlignment="Right" Background="#FFE6E6E6" />
<Label x:Name="RevertBackupLabel" Content="Backup or Revert Database:" HorizontalAlignment="Left" Margin="12,93,0,0" VerticalAlignment="Top" Foreground="White" FontFamily="Microsoft JhengHei UI" FontWeight="Bold" FontSize="16"/>
<Label x:Name="DatesLabel" Content="Change Dates in Database:" Margin="12,10,0,0" Foreground="White" FontFamily="Microsoft JhengHei UI" FontWeight="Bold" FontSize="16" HorizontalAlignment="Left" Width="216" Height="30" VerticalAlignment="Top"/>
<ProgressBar HorizontalAlignment="Left" Height="13" Margin="303,80,0,0" VerticalAlignment="Top" Width="143" Name="pbStatus" Value="{Binding local.progUpdate, UpdateSourceTrigger=PropertyChanged}" Maximum="{Binding mx}" Minimum="{Binding mn}" LargeChange="0.01"/>
</Grid>
XAML CS Portion:
public static class Binder
{
public static DateWindow daWindow;
}
public partial class DateWindow : Window, INotifyPropertyChanged
{
private double _progUpdate;
public double progUpdate
{
get { return _progUpdate; }
set
{
_progUpdate = value;
if (PropertyChanged != null)
{
PropertyChanged.Invoke(this, new PropertyChangedEventArgs(nameof(progUpdate)));
}
}
}
public double mx = 100;
public double mn = 0;
public event PropertyChangedEventHandler PropertyChanged;
public DateWindow()
{
InitializeComponent();
Binder.daWindow = this;
ChangeDateInDatabase ChangeDate = new ChangeDateInDatabase();
progUpdate = 25; // This is there so we can test the variable without going through the whole program.
}
private void ChangeDatesButton_Click(object sender, RoutedEventArgs e)
{
ChangeDateInDatabase ChangeDate = new ChangeDateInDatabase();
var result = MessageBox.Show("Are you sure you would like to change dates for " + Globals.selectedDatabase + " from server " + Globals.main.ServerComboBox.Text + "?", "Change Dates?", MessageBoxButton.YesNo, MessageBoxImage.Exclamation);
if (Globals.main.ServerComboBox.Text != "" && Globals.selectedDatabase != "" && FindDatabaseAndServer.Connector(Globals.main.ServerComboBox.Text, Globals.selectedDatabase) && result == MessageBoxResult.Yes)
{
try
{
long.Parse(DayChangeTextBox.Text);
ChangeDate.ChangeDates(this);
//ChangeDateInDatabase.ChangeDates(this);
}
catch
{
MessageBox.Show($"Invalid number {DayChangeTextBox.Text}, please enter a valid number.", "ERROR", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
}
(CLICK function serves the purpose of calling a method for the program. Inside the method, its main loop, which determines the methods completion, contains the variable desired to be bound with a defining equation for its value)
Method Containing Said Loop:
for (int dbTIndex = 0; dbTIndex < databaseTables.Length; dbTIndex++)
{
string[] dateColumns = new string[0];
string columnSelectQuery = "SELECT DATA_TYPE, COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" + databaseTables[dbTIndex].ToString() + "' AND COLUMN_NAME LIKE '_%'";
using (SqlConnection connection2 = new SqlConnection(connectionString))
{
SqlCommand command2 = new SqlCommand(columnSelectQuery, connection2);
connection2.Open();
SqlDataReader reader2 = command2.ExecuteReader();
int y = 0;
while (reader2.Read())
{
if (reader2[0].ToString() == "datetime")
{
Array.Resize(ref dateColumns, dateColumns.Length + 1);
dateColumns[y] = reader2[1].ToString();
y++;
}
}
}
for (var dtColIndex = 0; dtColIndex < dateColumns.Length; dtColIndex++)
{
string addDatesQuery = "UPDATE " + databaseTables[dbTIndex] + " SET " + dateColumns[dtColIndex] + " = DATEADD(dd," + Convert.ToInt32(date.DayChangeTextBox.Text) + "," + dateColumns[dtColIndex] + ") WHERE " + dateColumns[dtColIndex] + " IS NOT NULL";
using (SqlConnection connection3 = new SqlConnection(connectionString))
{
SqlCommand command3 = new SqlCommand(addDatesQuery, connection3);
connection3.Open();
command3.ExecuteNonQuery();
}
}
//vvvvv VARIABLE THAT NEEDS TO BE BOUND vvvvvvv
Binder.daWindow.progUpdate = ((100.00 / databaseTables.Length) * dbTIndex);
}
(There is obviously more code to this part, which I can provide if needed)
Thanks in advance!
EDIT:
For the XAML, local.progUpdate is not the only thing I have tried. I've done path, progUpdate by itself, etc.

Answer 1

Your ProgressBar's first binding makes no sense: {Binding local.progUpdate, UpdateSourceTrigger=PropertyChanged}. You're not specifying a source, and there's no DataContext assigned anywhere, so the binding won't evaluate to anything because the path is meaningless. Because the property is on the window itself, you can just assign the window's data context to itself.
// DateWindow.xaml.cs
public DateWindow()
{
InitializeComponent();
DataContext = this;
...
}
<!-- DateWindow.xaml -->
<ProgressBar Value="{Binding progUpdate, Mode=OneWay}" ... />
Your other bindings will require mx and mn to be properties rather than fields.