@Html.Action

• @Html.Action returns string.
• Syntax : @Html.Action(“Action”,”Controller”).
• Pass parameter with Action method Syntax : @Html.Action(“Action”,”Controller”, new {ParameterName=ParameterValue}).
• It is slower as compared to @Html.RenderAction.
• It’s result can be manipulated before rendering to the output stream.
• Manipulation : @{ var data= Html.Action(“Action”,”Controller”, new {ParameterName=ParameterValue}); } @data I am Software Developer.
• Use when data length is small or need to manipulate result before rendering to the output stream.

@Html.RenderAction

• @Html.RenderAction returns void.
• Syntax : @{ Html.RenderAction (“Action”,”Controller”); }
• Pass parameter with RenderAction method Syntax : @{ Html.RenderAction (“Action”,”Controller”, new {ParameterName=ParameterValue});}.
• It is faster as compared to @Html.Action because this result is written directly to the output stream.
• It’s result can not be manipulated.
• Use when data length is large or no need to manipulate result before rendering to the output stream.