How to search grid view using date column?

Question

 In a SQL Server database, I have a table Priority with 3 columns id, name and registered date. For registered date, default value is getdate()which automatically generates the record created date and time. Now in grid view, I want to search records using this registered date.In grid view, I have dropdown search by using name and date.

CREATE PROCEDURE [dbo].[SEARCHPRIOR]
@SearchBy VARCHAR(50),
@SearchVal VARCHAR(50),
AS
BEGIN
IF @SearchBy = '1'
BEGIN
SELECT * FROM PRIORITY WHERE P_NAME LIKE '%' + @SearchVal + '%'
END
ELSE IF @SearchBy = '2'
BEGIN
SELECT * FROM PRIORITY WHERE P_TS LIKE '%' + @SearchVal + '%'
END
ELSE
BEGIN
SELECT * FROM PRIORITY
END
END

I have tried searching with this query but getting no results found in grid view. This is how table look like in SQL Server:

 

P_ID     P_NAME     P_TS

-------------------------------------------

1         High      2019-04-23 16:17:08.097

2         Medium    2019-04-24 16:17:23.070

3          Low      2019-04-25 16:17:32.420