Question

我正在使用MvcContrib Grid的Sort方法来生成排序链接，例如

<%= Html.Grid(Model).AutoGenerateColumns().Sort((GridSortOptions)ViewData["sort"]) %>

我需要更改sort方法生成的默认控制器/操作。例如，

defaultControllerName/defaultActionName/?Column=ProductId&Direction=Ascending

会改为

customControllerName/customActionName/?Column=ProductId&Direction=Ascending

我无法在MVCcontribution类中找到允许我自定义链接的任何现有方法。我很感激有关如何改变默认链接的任何指示，因为我仍然是一个MVC / C＃新手。

Answer 1

这不是一件容易的事。您将需要一个自定义网格渲染器来实现此目的并覆盖RenderHeaderText方法：

public class MyHtmlTableGridRenderer<T> : HtmlTableGridRenderer<T> where TViewModel : class
{
    protected override void RenderHeaderText(GridColumn<TViewModel> column)
    {
        if (IsSortingEnabled && column.Sortable)
        {
            // TODO: generate a custom link here based on the sorting options
            string text = ...
            base.RenderText(text);
        }
        else
        {
            RenderText(column.DisplayName);
        }
    }
}

然后指定网格应使用此渲染器：

.RenderUsing(new MyHtmlTableGridRenderer<Employee>())

Answer 2

我想提供一个完整的工作示例：

public class SortableHtmlTableGridRenderer<T> : HtmlTableGridRenderer<T> where T : class
{
    readonly string _action;
    readonly string _controllerName;

    public SortableHtmlTableGridRenderer(string action, string controllerName)
    {
        _action = action;
        _controllerName = controllerName;
    }

    protected override void RenderHeaderText(GridColumn<T> column)
    {
        if (IsSortingEnabled && column.Sortable)
        {
            string sortColumnName = GenerateSortColumnName(column);

            bool isSortedByThisColumn = GridModel.SortOptions.Column == sortColumnName;

            var sortOptions = new GridSortOptions
            {
                Column = sortColumnName
            };

            if (isSortedByThisColumn)
            {
                sortOptions.Direction = (GridModel.SortOptions.Direction == SortDirection.Ascending)
                    ? SortDirection.Descending
                    : SortDirection.Ascending;
            }
            else //default sort order
            {
                sortOptions.Direction = column.InitialDirection ?? GridModel.SortOptions.Direction;
            }

            var routeValues = HtmlHelper.AnonymousObjectToHtmlAttributes(new {sortOptions.Column, sortOptions.Direction });
            var text = HtmlHelper.GenerateLink(Context.RequestContext, RouteTable.Routes, column.DisplayName, null, _action, _controllerName, routeValues, null);
            RenderText(text);
        }
        else
        {
            RenderText(column.DisplayName);
        }
    }
}

用法：

.RenderUsing(new SortableHtmlTableGridRenderer<YourModelType>("Search", "Search"))

MVC网格排序 - 自定义链接

2 个答案: