formatting in razor nested webgrid

Question

I\'m nesting a webgrid inside another webgrid as shown in Razor Nested WebGrid

But when I try to format the columns inside the nested webgrid it\'s throwing an error sta

Answer 1

I guess your problem is that you tried to use the same parameter name item in the inner format parameter. You cannot use the same parameter name in nested lambda expressions. You can find here more about lambda expressions. So you need to use a different parameter name (e.g. subItem) for the inner format:

...
    @topGrid.GetHtml(columns:
        topGrid.Columns(
            topGrid.Column("Index"),
            topGrid.Column("SubItems", format: (item) =>
            {
                WebGrid subGrid = subGrid = new WebGrid(item.SubItems);
                return subGrid.GetHtml(
                        columns: subGrid.Columns(
                        subGrid.Column("A", format: (subItem) => string.Format("Formatted: {0}", subItem.A)),
                            subGrid.Column("B")
                        )
                    );
            })
        )
    )
...