Difference between Html.Partial and Html.RenderPartial and Html.Action and Html.RenderAction

Html.Partial returns MVCHtmlString which can be assigned to a variable and manipulate if required.

Syntax : @Html.Partial("ViewName")

Html.RenderPartial returns void and output will be written directly to the output stream.

Syntax : @{ Html.RenderPartial("ViewName"); }

Note: We can also pass the model to the Partial

Syntax : @Html.Partial("ViewName", Model)
               @{ Html.RenderPartial("ViewName", Model) }


Html.Action Invokes the specified child action method and returns the result as an HTML string

Syntax : @{string result = @Html.Action("Action", "Controller", new { param = "value"} ).ToString();}

Html.RenderAction Invokes the specified child action method and renders the result inline in the parent view.

Syntax : @{Html.Action("Action", "Controller", new { param = "value"} ).ToString();}

 Note: This method is faster than the Action method since its result is directly written to the HTTP response stream. 

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