Right syntax of SqlParameter

Question

I\'m trying to convert :

command.Parameters.Add (new SqliteParameter (DbType.Int32) { Value = id });

To a normal SqlParameter :

Answer 1

I think you are looking something this;

command.Parameters.Add(new SqlParameter("@YourParameterName", SqlDbType.Int32).Value = id;

After edit your question;

You can use AddWithValue method. Add(String, Object) method is obsolete. like;

command.CommandText = "Select * from tblUsers WHERE UserID = @id";
command.Parameters.AddWithValue("@id", id);

If you use SQL Server as a database, you should named your parameter add it to AddWithValue with the same name.

When you use OleDbCommand, order of parameter is important. Because as MSDN says:

The OLE DB .NET Provider does not support named parameters for passing parameters to an SQL statement or a stored procedure called by an OleDbCommand when CommandType is set to Text. In this case, the question mark (?) placeholder must be used. For example:

SELECT * FROM Customers WHERE CustomerID = ?

Therefore, the order in which OleDbParameter objects are added to the OleDbParameterCollection must directly correspond to the position of the question mark placeholder for the parameter in the command text.