An HTML Helper is just a method that returns a HTML string. The string can represent any type of content that you want

Different types of HTML Helpers

1 Inline Html Helpers

 @helper ListingItems(string[] items)
     {
     <ol>
     @foreach (string item in items)
     {
     <li>@item</li>
     }
     </ol>
     }

     <h3>Student Details:</h3>

     @ListingItems(new string[] { "DDUN", "Rishikesh", "Almora" })

     <h3>Student List:</h3>

     @ListingItems(new string[] { "Himanshu", "Mukesh", "Gopal" })

2 Built-In Html Helpers HTML Element

Example
TextBox
@Html.TextBox("Textbox1", "val")
Output: <input id="Textbox1" name="Textbox1" type="text" value="val" />
TextArea
@Html.TextArea("Textarea1", "val", 5, 15, null)
Output: <textarea cols="15" id="Textarea1" name="Textarea1" rows="5">val</textarea>
Password
@Html.Password("Password1", "val")
Output: <input id="Password1" name="Password1" type="password" value="val" />
Hidden Field
@Html.Hidden("Hidden1", "val")
Output: <input id="Hidden1" name="Hidden1" type="hidden" value="val" />
CheckBox
@Html.CheckBox("Checkbox1", false)
Output: <input id="Checkbox1" name="Checkbox1" type="checkbox" value="true" /> <input name="myCheckbox" type="hidden" value="false" />
RadioButton
@Html.RadioButton("Radiobutton1", "val", true)
Output: <input checked="checked" id="Radiobutton1" name="Radiobutton1" type="radio" value="val" />
Drop-down list
@Html.DropDownList (DropDownList1, new SelectList(new [] {"Male", "Female"}))
Output: <select id="DropDownList1" name="DropDownList1"> <option>M</option> <option>F</option> </select>
Multiple-select
Html.ListBox(ListBox1, new MultiSelectList(new [] {"Cricket", "Chess"}))
Output: <select id="ListBox1" multiple="multiple" name="ListBox1"> <option>Cricket</option> <option>Chess</option> </select>