How to use WebGrid in a cshtml view?

I am able to use WebGrid in any controller like:

var grid = new WebGrid(emailsFetched, columnNames);

I had to add a reference in my ASP.NET MVC project to System.Web.Helpers for this.

But when I try to use this web grid in view directly (to avoid instantiation and other settings in controller) it says: The type or namespace 'WebGrid' cannot be found. Ok, I tried to add a reference here too:

@using System.Web.Helpers but this throws another issue:

There is no build provider registered for the extension '.cshtml'. You can register one in the <compilation><buildProviders> section in the machine.config or web.config. Make sure is has a BuildProviderAppliesToAttribute attribute which includes the value 'Web' or 'All'.

This is pretty strange... I've seen enough example on net which are using WebGrid and don't have to declare anything in the cshtml view...

Can you please tell me how to solve this? Or why I encounter this very ugly issue?

回答1:

Finally I've been able to notice that this:

<assemblies> <add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </assemblies>

has to be added in web config, under system.web section, withing compilation tags so it will look like:

<system.web>
    <compilation debug="true" targetFramework="4.0">
        <assemblies>
            <add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        </assemblies>
    </compilation>
</system.web>

回答2:

Try to follow the steps below that had been tested before in an ASP.NET MVC4 project without any problem.

1) Open NuGet Package Manager in Visual Studio and search “microsoft-web-helper” and install.

2) After installing it open web.config in your solution and change connectionStringName parameter for DefaultMembershipProvider, DefaultRoleProvider ve DefaultSessionProvider (if you do not, you might encounter 'DefaultConnection' was not found in the applications configuration or the connection string is empty.” error.

3) Rebuild your project and then use a smilar definition like below in your razor view.

Note: Change "Title", "Controller" and "Action" names in Html.ActionLinks according to your project.

View:

@{
var grid = new System.Web.Helpers.WebGrid(
    source: Model,
    columnNames: new List<string>() { "Title" },
    ajaxUpdateContainerId: "myGrid",
    defaultSort: "Name",
    canPage: true,
    canSort: true,
    rowsPerPage: 5
    );
grid.SortDirection = SortDirection.Ascending;
}


@grid.GetHtml(
      tableStyle: "table", /*your class name for this property*/
      headerStyle: "webgrid-header",/*your class name for this property*/
      footerStyle: "webgrid-footer", /*your class name for this property*/
      rowStyle: "webgrid-row-style", /*your class name for this property*/
      alternatingRowStyle: "webgrid-alternating-row",/*your class name...*/                                         selectedRowStyle: "webgrid-selected-row",/*your class name for this property*/

      firstText: "<<",
      lastText: ">>",
      mode: WebGridPagerModes.All,
      fillEmptyRows: true,

      columns: grid.Columns(
       grid.Column("ApplicantID", "No", style: "span1", canSort: true),
       grid.Column("Name", "Name", style: "span2", canSort: true),
       grid.Column("Surname", "Surname", style: "span2", canSort: true),
       grid.Column("Organization", "Org.", style: "span2", canSort: true),
       grid.Column("MeetingId", "Meeting", style: "span1", canSort: true),
        //some format usage samples:
        //grid.Column("Email", "e-mail", style: "span1", canSort: true, format: @<a href="mailto:@item.Email">@item.Email</a>),  
        //grid.Column("BirthDate", format: p=>p.BirthDate.ToShortDateString()),

//for using multiple Html.ActionLink in a column using Webgrid
grid.Column("Operations", format: (item) =>
 new HtmlString(
       Html.ActionLink("Show Details", "Edit", "Admin", new
       {
           applicantId = item.ApplicantID,               
           title = "Detail",
           @class = "icon-link",
           style = "background-image: url('../../Content/icons/detail.png')"
       }, null).ToString() +
       Html.ActionLink("Edit Record", "Edit", "Admin", new
       {
           applicantId = item.ApplicantID, 
           title = "Edit",
           @class = "icon-link",
           style = "background-image: url('../../Content/icons/edit.png')"
       }, null).ToString() +
       Html.ActionLink("Delete Record", "Edit", "Admin", new
       {
           applicantId = item.ApplicantID,
           title = "Delete",
           @class = "icon-link",
           style = "background-image: url('../../Content/icons/delete.png')"
       }, null).ToString()
 )
)
),
numericLinksCount: 5
)

Here are the css classes below used in Razor. If you would like to use your css definitions simply change style properties to that of yours (Some properties are optional as the ones in the Razor View).

<style type="text/css">    
    .webgrid-operations { /*for limiting the width of Operations 
                          menu used in the WebGrid*/
    width: 65px;
}

.webgrid-header td {
    text-align: left;
}

.webgrid-header th {
    background-color: #EFEFEF;
    margin-bottom: 2px;
}

.webgrid td {
    padding-right: 15px;
}

.webgrid-footer td {
    font-family: 'open_sanssemibold', sans-serif;
    font-size: 1em;
    text-align: right !important;
    padding-right: 21px !important;
    color: #000;
    background-color: #EFEFEF;
}

    .webgrid-footer td a {
        text-align: right !important;
        padding: 0 .4em 0 .4em;
        font-size: .83em;
        text-decoration: none;
        color: #FFFFFF;
        border: 1px solid #C0C0C0;
        background-color: #808080;
    }

        .webgrid-footer td a:hover {
            background-color: #6BBEC7;
        }

        .webgrid-footer td a.selected {
            background-color: #f00;
            color: #f00;
        }

.webgrid a {
    color: #fff;
}

.colRowButton {
    width: 70px;
    text-align: left;
}

.webgrid-row-style {
    /*border-bottom: 1px solid #E8EEF4;*/
}

.webgrid-alternating-row td {
    /*background-color: #f9f9f9;*/
}

.webgrid-selected-row {
    /*font-weight: bold;*/
}    

<style type="text/css">
    a.icon-link {
        background-color: transparent; 
        background-repeat: no-repeat; 
        background-position: 0px 0px;
        border: none;
        cursor: pointer; 
        width: 16px;
        height: 16px;
        margin-right: 8px; 
        vertical-align: middle;
    }

    .span5 {
    width:380px
    }
    .span4 {
    width:300px
    }
    .span3 {
    width:220px
    }
    .span2 {
    width:140px
    }
    .span1 {
    width:60px
    }
    </style>
}

Hope this helps...

回答3:

Ran into this issue. Can't really take credit but I uninstalled earlier version and reinstalled latest version of Microsoft ASP.NET MVC4 from Nuget and things are working for me. Hope this helps someone else. Tried all the solutions, but this was the only thing that worked. http://forums.asp.net/t/1823940.aspx?MVC4+WebGrid+problem+in+View+Razor+