basiclly the input of the TextBox is an articel number, and if the number is older then 6 Month I want to mark the border of my textbox red. For that I need to get data from an SQL Query btw.
The Code logic is working thats not the problem Ive got.
I tried multiple things, what I had tried at first was with an Textchange event which looks similiar to this:
TextBox tbx = sender as TextBox;
if (tbx.Text.Length > 7)
{
string getDate = SQL
try
{
using (var reader = command.ExecuteReader())
{
if (reader.HasRows)
{
reader.Read();
date = reader.GetDateTime(0);
}
reader.Close();
}
var lastmonth = DateTime.Today.AddMonths(-6);
if (lastmonth < date)
{
tbx.BorderBrush = (Brush)Application.Current.MainWindow.FindResource("BorderBrushWrong");
}
else
{
tbx.BorderBrush = (Brush)Application.Current.MainWindow.FindResource("BorderBrush");
}
}
catch
{
}
note I removed here the SQL Query stuff but In my Code its there
but with this Variant, after I put in the number the Textbox border getting red, but the selector is freezing and I only cant switch the textbox after 5 clicks or something. And the cursor is still in the textbox and I cant mark the text or do all the function an textbox got. I only can remove the Text from the delete button on the keyboard.
After that didnt work I tried it on the Text Property that is bound to the textbox:
private string _TopArtikel;
public string TopArtikel
{
get
{
//replaceHTMLnew();
return _TopArtikel;
}
set
{
_TopArtikel = value;
inputCheck(_TopArtikel);
NotifyPropertyChanged(nameof(TopArtikel));
}
}
on Input check is the same Code and to change the color I make instead of that:
tbx.BorderBrush = (Brush)Application.Current.MainWindow.FindResource("BorderBrushWrong");
this
colorcheck = true;
thats an bool property I created and in my style of my textbox I made an DataTrigger:
<DataTrigger Binding="{Binding colorcheck}" Value="True">
<Setter Property="BorderBrush" Value="Red"/>
</DataTrigger>
but I ran into the Same Issue
the third try was with an Validation rule which I Implemented like this:
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
NewsViewModel viewModel = new NewsViewModel();
string input = value.ToString();
if (input.Length > 7)
{
string getDate = SQL
DateTime date = new DateTime();
IGenericCommand command = viewModel.mandant.MainDevice.GenericConnection.CreateSqlStringCommand(getDate);
command.AppendInParameter("artikelnummer", typeof(string), input);
try
{
using (var reader = command.ExecuteReader())
{
if (reader.HasRows)
{
reader.Read();
date = reader.GetDateTime(0);
}
reader.Close();
}
var lastmonth = DateTime.Today.AddMonths(-6);
if (lastmonth < date)
{
return new ValidationResult(false,"");
}
else
{
return new ValidationResult(true, null);
}
}
catch
{
MessageBox.Show("Fehler");
}
}
return new ValidationResult(true, null);
}
and in xaml this:
<Binding Path="TopArtikel" ValidatesOnExceptions="True"
UpdateSourceTrigger="PropertyChanged">
<Binding.ValidationRules>
<local:MonthValidation/>
</Binding.ValidationRules>
</Binding>
But with this I got the Issue that the Placeholder Text of my Textbox not removing and the Color not changing. The Input I made is overlapping with the Placeholder Text.
Has some of you an Idea on how to get the Border Red when I made and articel number Input which is older than 6 Month? I already have the Code, I have no Idea how to make this Validation Correctly.
My TextBox Style in case you need this:
<Style x:Key="txtStyle" TargetType="{x:Type TextBox}">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="FontSize" Value="12"/>
<Setter Property="BorderBrush" Value="#e5e7ea"/>
<Setter Property="TextWrapping" Value="Wrap"/>
<Setter Property="HorizontalAlignment" Value="Stretch"/>
<Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="BorderThickness" Value="2"/>
<Setter Property="FocusVisualStyle" Value="{x:Null}"/>
<Setter Property="AllowDrop" Value="true"/>
<Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>
<Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Grid>
<Border x:Name="border" Grid.ColumnSpan="2" Margin="0 2 0 2 " Background="{Binding Background, RelativeSource={RelativeSource AncestorType={x:Type TextBox}}}"
CornerRadius="5" BorderThickness="1.5" BorderBrush="{Binding BorderBrush, RelativeSource={RelativeSource AncestorType={x:Type TextBox}}}"/>
<ScrollViewer Grid.Column="2" x:Name="PART_ContentHost" Margin="5,5,0,5" VerticalAlignment="Center" />
<Label Margin="5,0 0,0" HorizontalAlignment="Left" Grid.Column="1" x:Name="WaterMarkLabel" VerticalAlignment="Center"
Visibility="Collapsed" Foreground="Gray" FontFamily="Arial" Content="{Binding Tag, RelativeSource={RelativeSource AncestorType={x:Type TextBox}}}"/>
</Grid>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Text" Value=""/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="WaterMarkLabel" Value="Visible"/>
</MultiTrigger>
<DataTrigger Binding="{Binding colorcheck}" Value="True">
<Setter Property="BorderBrush" Value="Red"/>
</DataTrigger>
<Trigger Property="IsFocused" Value="True">
<Setter Property="Background" Value="White"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="DimGray"/>
</Trigger>
<Trigger Property="IsReadOnly" Value="True">
<Setter Property="Background" Value="#f0f0f0"/>
<Setter Property="BorderThickness" Value="0"/>
</Trigger>
<EventTrigger
RoutedEvent="TextBox.GotFocus">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="border"
Storyboard.TargetProperty="BorderBrush.Color"
To="#5B7FFF" Duration="00:00:00.2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger
RoutedEvent="TextBox.LostFocus">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="border"
Storyboard.TargetProperty="BorderBrush.Color"
To="#e5e7ea" Duration="00:00:00.2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsInactiveSelectionHighlightEnabled" Value="true"/>
<Condition Property="IsSelectionActive" Value="false"/>
</MultiTrigger.Conditions>
<Setter Property="SelectionBrush" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}"/>
</MultiTrigger>
</Style.Triggers>
</Style>
