Xamarin Forms Remove space from Entry - xamarin

Question

I have a problem. I created a register page, with labels that show an error like "Username already exists". But the space between the Label and the Entry is a little bit too much. Here is an image of how it is now:
Now all of that is in a Grid, but the RowHeights are set to Auto, so this is the smallest size that the entry could get. The label, however, must be far more to the top (closer to the Username Entry).
Here is my code:
<Grid VerticalOptions="CenterAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="35" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="90" />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Image Grid.Row="1" Grid.Column="0" x:Name="imgUsernameStatus" Margin="5"/>
<Entry Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2" Placeholder="Username" PlaceholderColor="#bababa" FontSize="16" x:Name="txtUsername" TextColor="White" Unfocused="OnUsernameUnfocused" TextChanged="OnUsernameTextChanged" />
<Label Grid.Row="2" Grid.Column="1" Grid.ColumnSpan="2" Text="Username already exists" TextColor="Red" FontSize="11" x:Name="txtUsernameError" IsVisible="False" />
<Image Grid.Row="3" Grid.Column="0" x:Name="imgEmailStatus" Margin="5"/>
<Entry Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="2" Placeholder="Email" PlaceholderColor="#bababa" FontSize="16" x:Name="txtEmail" TextColor="White" TextChanged="OnEmailTextChanged" />
</Grid>
How can I do that?

Answer 1

Default value for RowSpacing is 6 unit
Set RowSpacing="0"
<Grid VerticalOptions="CenterAndExpand"
RowSpacing="0">
<!--Your Content-->
</Grid>