c# - 生成时从 MVC C# 中的 gridview 中的项目获取值

Question

美好的一天:

我得到这段代码以在 MVC 4 中生成一个 gridview；

@{SATXmlReports.Models.User spp = new SATXmlReports.Models.User();
           var grid = new WebGrid(ViewData["GridUserData"] as IEnumerable<SATXmlReports.Models.User>, canPage: true, canSort: true, rowsPerPage: 10, selectionFieldName: "selectedRow", ajaxUpdateContainerId: "gridContent");
          }
          <div id="gridContent" >
          @grid.GetHtml(
                        tableStyle: "table table-hover",
                        columns: grid.Columns(
                        grid.Column("Name", format: (item) => item.GetSelectLink(item.Name.ToString())),
                        grid.Column("Rol","Rol"),
                                 grid.Column("User Sites", "UserSites", format: item => Html.DropDownList("Sites", SATXmlReports.Models.User.GetUserSites(item.Name.ToString()).Select(u => new SelectListItem { Text = u.Description, Value = u.Number }))
                                 )))

但是我得到这个错误:

Error 11 The best overloaded method match for 'System.Web.Helpers.WebGrid.Column(string, string, System.Func, string, bool)' has some invalid arguments c:\Users\fernando.martinez\Desktop\SATXmlReports\SATXmlReports\Views\Configuracion\UserSettings.cshtml 109 38 SATXmlReports

和:

Error 12 Argument 3: cannot convert from 'lambda expression' to 'System.Func' c:\Users\fernando.martinez\Desktop\SATXmlReports\SATXmlReports\Views\Configuracion\UserSettings.cshtml 109 83 SATXmlReports

我尝试了所有方法来获取项目属性，但都失败了。这种方式有效，但是是硬编码的:

grid.Column("User Sites", "UserSites", format: item => Html.DropDownList("Sites", SATXmlReports.Models.User.GetUserSites("John.Burdon").Select(u => new SelectListItem { Text = u.Description, Value = u.Number }))

有什么建议吗？

Answer 1

你必须小心使用动态(项目)的扩展方法。

试试这个:

grid.Column("User Sites", "UserSites", format: item => Html.DropDownList("Sites", SATXmlReports.Models.User.GetUserSites((string)item.Name).Select(u => new SelectListItem { Text = u.Description, Value = u.Number }))