Error Converting Data Type Nvarchar To Int.

Hi i keep getting this error when i search based on Team name (dropdownlist) or coach name(textbox). However it works when i make the search based on the region id(dropdownlist) here is my stored procedure;ALTER PROCEDURE [dbo].[stream_FindTeam]

-- Add the parameters for the stored procedure here

@coachName varchar(100),

@TeamName varchar(100),@regionID INT

 

AS

SELECT TeamID, coachName FROM Teams WHERE coachName LIKE @coachName OR TeamName= @TeamNameOR regionID = @regionID;

 Here is my code;SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["streamConnectionString"].ConnectionString);

conn.Open();SqlCommand command = new SqlCommand("stream_FindTeam", conn);

command.CommandType = CommandType.StoredProcedure;command.Parameters.AddWithValue("@coachName", coachName.Text);

command.Parameters.AddWithValue("@TeamName", TeamList.SelectedValue);command.Parameters.AddWithValue("@regionID", Region.SelectedValue);SqlDataReader reader = command.ExecuteReader(CommandBehavior.CloseConnection);

DataList1.DataSource = reader;

DataList1.DataBind();

conn.Close();