passing parameters using stored procedure with where clause??

[hemantc87]

i have created this function with a parameter offset and i want to access the database using stored procedure but the code and stored procedure i have written below is not working...what is the right way to do it??

public bool isoffsetexist(int offset)
    {
        conn.Open();
     
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = conn;
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.CommandText = "sp_offset1";
        SqlDataReader dr = cmd.ExecuteReader();
    
        int i = 0;
        while (dr.Read())
        {
            i++;
        }
        if (i == 1)
        {
            conn.Close();
            return true;
        }
        else
        {
            conn.Close();
            return false;
        }
    }

my stored procedure "sp_offset1 " is

CREATE PROCEDURE [dbo].[sp_offset1]
@offset numeric,
@appname varchar(20),
@os varchar(20)
 AS
select * from tb_offset
 where @offset=" + offset + "