Html.renderaction of ASP. NET MVC

Web Forms mode development accustomed to, cut into the MVC pattern, a lot of things do not understand, every step to look for information.

Some of the initial points of knowledge learned are:

_layout.cshtml is the equivalent of a master page

Then the partical view (partial view) is the user control.

So how do you want to put a user control in _layout.cshtml?

Suppose I have a "user control":/partial/logininfo, you can use this in _layout.cshtml:

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1. <div id="Ly_user">
2. @{html.renderaction ("Logininfo", "Partial");}
3. </div>

With Html.renderaction.

The file structure for the user control is as follows:

The red line is the corresponding "User control"

If you want to pass a point parameter to this user control, how to write it?

_layout.cshtml:

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1. <div id="Ly_navi">
2. @{html.renderaction ("Navi"
3. , "Partial"
4. , new { Parentcontroller = viewcontext.routedata.values["Controller"].  ToString ()});}
5. </div>

Pass the controller information of the current page to the user control, note that this

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1. Parentcontroller

It is our own freedom here, without prior notice.

In the user control view, _navi.cshtml receives:

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1. @model Navimodels
2. <div>
3. @{
4. StringBuilder sb = new StringBuilder ("");
5. string controller = viewcontext.routedata.values["Parentcontroller"]. ToString ().  ToLower ();
6. @Html. Raw (sb.) ToString ());
7. }
8. </div>

Html.renderaction of ASP. NET MVC