MVC 3 Webgrid - 如何隐藏不想显示的列? [英] MVC 3 Webgrid - how do you hide columns you do not want to be visible?

问题描述

我有一个 webgrid，有一个列我只想对某些用户可见.目前我已经将网格编码如下

I have a webgrid and there is a column I want to be visible only to certain users. Currently I have coded the grid as follows

if (Context.User.IsInRole(Role.Inputter) || Context.User.IsInRole(Role.Administrator))
{
    @grid.GetHtml(columns: grid.Columns(
        grid.Column(format: (item) => Html.ActionLink("Select", "Details", new { contractId = item.ContractId })),
        grid.Column(format: (item) => Html.ActionLink("Edit", "Edit", new { contractId = item.ContractId })),
        grid.Column("SignOffDate", "Sign Off Date",
            format: @<text> <span>@item.SignOffDate.ToString("d/M/yyyy")</span></text>),
        grid.Column("FullContractNumber", "Contract Number"),
        grid.Column("ContractTitle", "Title")
    ));
}
else
{ 
    @grid.GetHtml(columns: grid.Columns(
        grid.Column(format: (item) => Html.ActionLink("Select", "Details", new { contractId = item.ContractId })),
        grid.Column("SignOffDate", "Sign Off Date",
            format: @<text> <span>@item.SignOffDate.ToString("d/M/yyyy")</span></text>),
        grid.Column("FullContractNumber", "Contract Number"),
        grid.Column("ContractTitle", "Title")
    ));
}

但是肯定有更好的方法而不重复所有代码吗?2 列输入之间的唯一区别是我想为特定用户显示编辑链接.那么，最好的替代方法是什么?

But surely there is a better way without repeating all that code? The only difference between the 2 column inputs is that I want to display the Edit link for particlaur users. So what is the best alternative way of doing that?

推荐答案

试试这样(未测试，暂时无法访问 VS):

Try like this (untested, don't have access to VS at the moment):

@{
    var gridColumns = new List<WebGridColumn>();
    gridColumns.Add(grid.Column(format: (item) => Html.ActionLink("Select", "Details", new { contractId = item.ContractId })));
    if (Context.User.IsInRole(Role.Inputter) || Context.User.IsInRole(Role.Administrator))
    {
        gridColumns.Add(grid.Column(format: (item) => Html.ActionLink("Edit", "Edit", new { contractId = item.ContractId })));
    }
    gridColumns.Add(grid.Column("SignOffDate", "Sign Off Date", format: @<text> <span>@item.SignOffDate.ToString("d/M/yyyy")</span></text>));
    gridColumns.Add(grid.Column("FullContractNumber", "Contract Number"));
    gridColumns.Add(grid.Column("ContractTitle", "Title"));
}

@grid.GetHtml(columns: grid.Columns(gridColumns.ToArray()));

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