Question

I’m using a repeater control and I’m trying to pass a parameter as such:

<%# SomeFunction( DataBinder.Eval(Container.DataItem, 'Id') ) %> 

It’s basically calling:

public string SomeFunction(long id) {      return 'Hello';          } 

I’m not able to achieve this as I get an error:

error CS1502: The best overloaded method match … SomeFunction(long id) … has some invalid arguments.

Any ideas?

Answer 1

You need to cast the result to a long, so:

<%# SomeFunction( (long)DataBinder.Eval(Container.DataItem, 'Id') ) %> 

The alternative is to do something like this:

<%# SomeFunction(Container.DataItem) %> 

and…

public string SomeFunction(object dataItem) {     var typedDataItem = (TYPED_DATA_ITEM_TYPE)dataItem;      // DO STUFF HERE WITH THE TYPED DATA ITEM      return 'Hello';          } 

This at least allows you to work with multiple values from the data item (DataRows etc).