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Cannot convert lambda expression to type 'string' because it is not a delegate type

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Mark Shortt
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Mark Shortt asked on 23 May 2011, 05:21 PM
Hi

Using the MVC grid I'm trying to set a bound column to a field in a sub table, but when I use the normal Linq expression I get the error 

"Cannot convert lambda expression to type 'string' because it is not a delegate typeCode is 

columns.Bound(o => o.WR_TakeAway_Dishes.DishName).Width(350).Sortable(false);

Is it possible to do this or will I need to create a separate class with the data from the sub table?


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Andrew
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answered on 01 Jul 2011, 05:11 AM
met the same problem, why not have choosen the right overloading method:
public virtual GridBoundColumnBuilder<TModel> Bound<TValue>(Expression<Func<TModel, TValue>> expression);
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Andrew
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answered on 01 Jul 2011, 05:50 AM
solved.check your model class access modifier
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Dan
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answered on 23 Mar 2012, 07:19 PM
Can you be more specific?  I just added one new column and now I get the error. If I remove the DISPLAY_ORDER column this code works:

 .Columns(columns =>
                             {
                                 columns.Bound(o  => o.WorkOrderNumber).Title(ConfigurationManager.AppSettings["IdColumn"]);
                                 columns.Bound(o => o.full_name).Title("Company");
                                 columns.Bound(o => o.store_id).Title("Site Id");
                                 columns.Bound(o => o.problem).Title("Problem");
                                 columns.Bound(o => o.problem_type).Title("Category");
                                 columns.Bound(o => o.DISPLAY_ORDER).Title("Category");              //THIS LINE IS ISSUE                                  
                                                      });                                 
                             }).Sortable().Filterable().Groupable().Footer(false).Resizable(
                                 resizing => resizing.Columns(true)).Reorderable(reorder => reorder.Columns(true))
                .Render();%>
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Dadv
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answered on 26 Mar 2012, 10:06 AM
Could you give us your model class to see all the types?

Regards,
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Dan
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