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POWebGrid: cannot convert from 'lambda expression' to 'System.Func<dynamic,object>'
 

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  1. POWebGrid: cannot convert from 'lambda expression' to 'System.Func<dynamic,object>'
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    <p>I am trying to handle a case of a DateTime which might be null when rendering in a ASP.NET MVC3 WinGrid. I am getting an error when trying to set the WebGridColumn. I have one that I got working, one that isn't. The one that is working is less idea, for the html is generated within the helper function. What I cannot figure out is why the ideal one isn't working. </p> <p>Here is the one that works:</p> <pre><code>$gridSummary.Column("OngoingDate", header: "Ongoing", format: Html.DateTimeActionLink, style: "ongoingDate") public static object DateTimeActionLink(this HtmlHelper htmlHelper, dynamic item) { DateTime? linkDateTime = item.OngoingDate; if (linkDateTime != null &amp;&amp; linkDateTime.HasValue) { var x = linkDateTime.Value.ToString("MM/dd/yyyy"); return LinkExtensions.ActionLink(htmlHelper, x, "Edit", "MdsAsmtSectionQuestions", new { mdsId = item.OngoingId }, null); } return MvcHtmlString.Empty; } </code></pre> <p>here is the one that is not working:</p> <pre><code> $gridSummary.Column("AssessmentInfo", header: "Open Type | ARD", format: (item) =&gt; { return Html.DateTimeActionLink( item.AssessmentDate, "MM/dd/yyyy", x =&gt; Html.ActionLink(item.AssessmentInfo + " | " + x, "Edit", "MdsAsmtSectionQuestions", new { mdsId = item.OngoingId }, null)); }, style: "assessmentInfo") public static object DateTimeActionLink(this HtmlHelper htmlHelper, dynamic item, string format, Func&lt;string, MvcHtmlString&gt; actionLink) { Nullable&lt;DateTime&gt; linkDateTime = item; if (linkDateTime != null &amp;&amp; linkDateTime.HasValue) return actionLink(linkDateTime.Value.ToString(format)); return MvcHtmlString.Empty; } </code></pre>
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    1. USSam Carleton
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    1. COpossible duplicate of [ASP.NET MVC3 WebGrid format: parameter](http://stackoverflow.com/questions/5122691/asp-net-mvc3-webgrid-format-parameter)
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      1. USKirk Woll
    2. COI just tried the following, casting the param to a DateTime? and I get the same error. Am I missunderstanding the fix in the link you posted? gridSummary.Column("AssessmentInfo", header: "Open Type | ARD", format: (item) => DateTimeActionLink( (DateTime?)item.AssessmentDate, "MM/dd/yyyy", x => Html.ActionLink(item.AssessmentInfo + " | " + x, "Edit", "MdsAsmtSectionQuestions", new { mdsId = item.OngoingId }, null))
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      1. POWebGrid: cannot convert from 'lambda expression' to 'System.Func<dynamic,object>'
      1. USSam Carleton
 

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