[WPF] Use element of another UserControl

Roberto Salemi

11y1.1k

Hi,
I have included an UserControl "B" into another UserControl "A".... so, I would refresh/update the datagrid "dgPlan" defined in UserControl "A" from UserControl "B".
The application give me an error, because "dgPlna" is not defined, how can I defined it in UserControl "B"?
Thanks.

3 Replies

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Roberto Salemi11y ago
Resolved, thanks to an external user
in UserControlA:
public void RefreshDataGrid(IEnumerable itemsSource)
{
dgPlan.ItemsSource = itemsSource;
}

in UserControlB:
void bntSearch_Click(object sender, RoutedEventArgs e)
{
MyProject.Views.UserControlA uc = FindParent(this);

if (uc != null)
{
uc.RefreshDataGrid(myCollection);
}
}

private static T FindParent(DependencyObject dependencyObject) where T : DependencyObject
{
var parent = VisualTreeHelper.GetParent(dependencyObject);

if (parent == null) return null;

var parentT = parent as T;
return parentT ?? FindParent(parent);
}

Thanks.
0
Roberto Salemi11y ago
Hi,

this is my code:

UserControlA

x:Name="UserControlUserControlA"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mui="http://firstfloorsoftware.com/ModernUI"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:staticData="clr-namespace:MyProject.Views"
mc:Ignorable="d"
d:DesignHeight="381" d:DesignWidth="1200" Unloaded="UserControl_Unloaded">


AlternatingRowBackground="{StaticResource RowAlternateColorBackground}"
GridLinesVisibility="All" VerticalGridLinesBrush="{StaticResource GridLineColor}"
HorizontalGridLinesBrush="{StaticResource GridLineColor}"
IsReadOnly="False" CanUserAddRows="False">
[MY_COLUMNS]

UserControlB

x:Name="UserControlUserControlB"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mui="http://firstfloorsoftware.com/ModernUI"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:staticData="clr-namespace:MyProject.Views"
mc:Ignorable="d"
d:DesignHeight="381" d:DesignWidth="1200">

[MY_CONTENT]

dgPlan is my DataGrid in UserControlA.

When the user click on bntSearch button in UserControlB, dgPlan must be updated with the new data.

Thanks.
0
Tom Mohan11y ago
Colud you share the code and error which you are getting .
0