Question

when i insert a text into a table in sql server, rows didn’t show text and show ??????

i know with blow code can correct it:

INSERT [dbo].[TableName] (CityName,latitude,longitude)
VALUES (N'txt',34,56) 

but i use this code for insert :

INSERT INTO [dbo].[TableName]
VALUES (@CityName,@latitude,@longitude)

sqlcmd.Parameters.Add("@CityName",SqlDbType.VarChar);
sqlcmd.Parameters.Add("@latitude", SqlDbType.Int);
sqlcmd.Parameters.Add("@longitude", SqlDbType.Int);

what can i do ?

thanks

Answer 1

Try using SqlDbType.NVarChar as type for your @CityName instead of the varchar you currently use.

                                            \/
sqlcmd.Parameters.Add("@CityName", SqlDbType.NVarChar);

Also, like Prasanna suggests, use

sqlcmd.Parameters.AddWithValue("@CityName", cityName);

which would probably work without needing to specify the type, in your case.