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POMVC - There is no ViewData item of type 'IEnumerable' that has the key '*******'
 

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  1. POMVC - There is no ViewData item of type 'IEnumerable' that has the key '*******'
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    <p>This is annoying me. It works perfectly on the load and if I complete the form and submit it. If however I don't update any values hence should generate validation errors due to null values, it shows the following error.</p> <ul> <li>$exception {"There is no ViewData item of type 'IEnumerable' that has the key 'TenantType'."} System.Exception {System.InvalidOperationException}</li> </ul> <p>The error is correct, there is no viewdata with the same name as the dropdown. The dropdowns are generic so I have shared them, ie. some have Yes/No. Why is it asking for viewdata of the same name as the control when clearly I point at something else?</p> <p>View Extract</p> <pre><code> &lt;div class="editor-field"&gt; @Html.DropDownList("TenantType", ViewData["list7"] as SelectList) &lt;/div&gt; @Html.ValidationMessageFor(model =&gt; model.TenantType) </code></pre> <p>Controller Extract</p> <pre><code> var list7 = new SelectList(new[] { new {ID="",Name="Please Select"}, new {ID="Professional",Name="Professional"}, new {ID="Student",Name="Student"}, new {ID="DSS Family",Name="DSS Family"}, new {ID="DSS Individuals",Name="DSS Individuals"}, new {ID="Local Authority",Name="Local Authority"}, new {ID="Holiday Home",Name="Holiday Home"}, new {ID="Asylum Seekers",Name="Asylum Seekers"}, }, "ID", "Name", 1); ViewData["list7"] = list7; </code></pre> <ul> <li>$exception {"There is no ViewData item of type 'IEnumerable' that has the key 'TenantType'."} System.Exception {System.InvalidOperationException}</li> </ul>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. USSteve Newton
    1. USSteve Newton
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      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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