CODEWITHSUNDEEP
c#.netwpfxaml
Poma
Poma

Reputation: 8474

How to bind to specific collection item?

How to bind let's say TextBox.Text to myDictionary["testElement"]?

Upvotes: 4

Views: 151

Answers (2)

brunnerh
brunnerh

Reputation: 184516

Have you tried removing the quotes around testElement? If the key is a string that should work.

From MSDN:

Indexers of a property can be specified within square brackets following the property name where the indexer is applied. For instance, the clause Path=ShoppingCart[0] sets the binding to the index that corresponds to how your property's internal indexing handles the literal string "0". Multiple indexers are also supported.

[...]

Inside indexers you can have multiple indexer parameters separated by commas (,). The type of each parameter can be specified with parentheses. For example, you can have Path="[(sys:Int32)42,(sys:Int32)24]", where sys is mapped to the System namespace.

Upvotes: 4

Eugen
Eugen

Reputation: 2990

The best way is to use a derived from IValueConvertor class. You bind to the dictionary itself, and set the ConverterParameter='testElement', in your converter you get both the dictionary and the key and return what's needed.

Upvotes: 2

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