How To improve wpf user control performance? - wpf

Question

I have a usercontrol, and when I have lots of that in a window, it takes long time to get loaded.
Will it get better if I change it to a customcontrol or maybe a DataTemplate with a class and attached properties?
any ideas would be greatly appreciated.
Edited:
this is my control:
<UserControl
x:Class="Pouyansoft.WPF.MVVM.Control.Common.View.DataGridSelectorControl"
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"
x:Name="dataGridSelector"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
mc:Ignorable="d" >
<UserControl.Resources>
<CollectionViewSource Source="{Binding DataCollection.Source}" x:Key="theSource"/>
<Style x:Key="DataGridColumnHeaderStyle1" TargetType="{x:Type DataGridColumnHeader}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridColumnHeader}">
<Grid VerticalAlignment="Center" HorizontalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Text="{TemplateBinding Content}"
HorizontalAlignment="Center" />
<TextBox x:Name="txtSearch" Grid.Row="1" HorizontalAlignment="Stretch"
BorderThickness="1" TextChanged="TextBox_TextChanged" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<Grid>
<DataGrid x:Name="grd"
ItemsSource="{Binding Source={StaticResource theSource}}"
AutoGenerateColumns="False"
ColumnHeaderStyle="{DynamicResource DataGridColumnHeaderStyle1}"
PreviewKeyDown="grd_PreviewKeyDown"
SelectedIndex="{Binding SelectedIndex}"
behavior:MouseDoubleClick.Command="{Binding MouseDoubleClickCommand}"
PreviewMouseLeftButtonUp="grid1_PreviewMouseLeftButtonUp"
GridLinesVisibility="Vertical">
</DataGrid>
</Grid>
and some code in the code behind.(and actually all the other control has the same behavior)

Answer 1

First thing, don't use DynamicResource use StaticResource -
use
ColumnHeaderStyle="{StaticResource DataGridColumnHeaderStyle1}"
in place of
ColumnHeaderStyle="{DynamicResource DataGridColumnHeaderStyle1}"
Second thing is to check for binding errors in your Output window, try and fix as many as you can.
Also, I don't see any benefit of using CollectionViewSource (as you are not doing any Sorting, Filtering, Grouping); If it's not necessary to use CollectionViewSource, you can directly bind the DataGrid's ItemSource to your DataCollection.Source.