multicolumn search in single Textbox. c#asp.net

Question

Dear Sir Help me … c#
I have a textbox name TextBox1.Text. When I typing in Textbox the some filed value are autofill from database. i.e.
In textbox accept both value for example when I type Keyword @Name it show the Name of all Employees
In textbox accept both value for example when I type Keyword @CompanyName it show the List of Company.

Example: My Name is @Name  and I Worked in @companyName  joining date is @JoinDate  to @tillDate.

@ID	@Name	@CompanyName	@JoiningDate
1	vinod	ABC	01-Jan-2010
2	Raju	AAA	31-Dec-2011