c# - Binding Run inside Textblock results in exception in WPF -


i'm trying bind 2 <run>s inside textblock shown in snippet below. i'm getting xamlparseexception.

basically i'm trying achieve format:

codenum: longdescription

if below code doomed fail other alternatives have?

<textblock>     <run fontweight="bold" text="{binding codenum}"/>     <run fontweight="bold" text=": "/>     <run text="{binding longdescription}"/> </textblock>

i'm guessing either longdescription or codenumis read-only property (doesn't have public setter). need change binding 1 way read-only properties use in run

<run text="{binding longdescription, mode=oneway}"/>

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