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POMVC3 - posting byte array to a controller - Database RowVersion
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copied!<p>I am working on an MVC3 application. My client side ViewModel contains a SQL Server RowVersion property, which is a byte[]. It is rendered as an Object array on the client side. When I attempt to post my view model to a controller, the RowVersion property is always null.</p> <p>I am assuming that the Controller serializer (JsonValueProviderFactory) is ignoring the Object array property.</p> <p>I have seen this blog, however this does not apply, as I am posting JSON and not the form markup: <a href="http://thedatafarm.com/blog/data-access/round-tripping-a-timestamp-field-with-ef4-1-code-first-and-mvc-3/">http://thedatafarm.com/blog/data-access/round-tripping-a-timestamp-field-with-ef4-1-code-first-and-mvc-3/</a></p> <p>My view renders my viewmodel like so:</p> <pre><code><script type="text/javascript"> var viewModel = @Html.Raw( Json.Encode( this.Model ) ); </script> </code></pre> <p>I then post the viewModel to the controller like so:</p> <pre><code> var data = { 'contact': viewModel }; $.ajax({ type: 'POST', url: '/Contact/Save', contentType: "application/json; charset=utf-8", data: JSON.stringify(data), dataType: 'json', success: function (data) { // Success }, error: function (XMLHttpRequest, textStatus, errorThrown) { alert(XMLHttpRequest.responseText); } }); </code></pre> <p>Here is my action in the controller:</p> <pre><code> [HttpPost] public JsonResult Save(Contact contact) { return this.Json( this._contactService.Save( contact ) ); } </code></pre> <p><strong>UPDATE:</strong> based on Darin's answer.</p> <p>I was hoping for a cleaner solution, but since Darin provided the only answer, I will have to add a custom property that will serialize my byte[] "row_version" property to a Base64 string. And when the Base64 string is set to the new custom property, it converts the string back to a byte[]. Below is the custom "RowVersion" property that I added to my model:</p> <pre><code> public byte[] row_version { get; set; } public string RowVersion { get { if( this.row_version != null ) return Convert.ToBase64String( this.row_version ); return string.Empty; } set { if( string.IsNullOrEmpty( value ) ) this.row_version = null; else this.row_version = Convert.FromBase64String( value ); } } </code></pre>

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