UserControl for a Row in a Grid - xaml

Question

I have following Grid:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<!-- GridRow-Definition -->
<Label Grid.Row="0" Grid.Column="0">FirstRow:</Label>
<TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Binding_To_First_Row}" />
<Label Grid.Row="1" Grid.Column="0">SecondRow:</Label>
<TextBox Grid.Row="1" Grid.Column="1" Text="{Binding Binding_To_Second_Row}" />
<!-- many more Label-TextBox-Rows -->
</Grid>
Question:
Is there a way to Create a UserControl which contains the Label and TextBox and properly aligns the first Column in a proper way?

Answer 1

The answer is yes, it is possible, but perhaps you should be using a DataGrid or an ItemsControl with a DataTemplate.
The simple answer to your question though is, if you need grid columns in different grids to synchronize their widths, you use the SharedSizeGroup attribute, e.g:
<UserControl>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition SharedSizeGroup="column1" Width="auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
</Grid>
</UserControl>
Then in a parent element you use Grid.IsSharedSizeScope="True"
<StackPanel Grid.IsSharedSizeScope="True">
<local:UserControl1/>
<local:UserControl1/>
</StackPanel>
This synchronizes any columns (or rows) that have the same SharedSizeGroup within that scope (you can have multiple nested scopes).