Accessing XAML controls in WPF

I'm using this code in .xaml, as I created a user defined control(TextBox) NumericTextbox:

<local:NumericTextBox Grid.Column="1"
       local:NumericTextBox.Mask="Decimal"
       local:NumericTextBox.MaximumValue="55"
       local:NumericTextBox.MinimumValue="0"
       Name="abc"
       G开发者_开发百科rid.Row="0"
       Text="{Binding Path=IPAddressProperty}" />

I want to access that NumericTextbox in .xaml.cs and I have to give that minimum and maximum value also in .xaml.cs file,

Can anyone help me out please?

This question would be much more readable if you put your XAML up in the original post.

You need to give it a name in XAML:

<local:NumericTextBox x:Name="MyTextBox" />

Then you can reference its properties with that name in C# code-behind:

this.MyTextBox.MinimumValue = 0;
this.MyTextBox.MaximumValue = 255;