System.Data.Common.DbParameter

public abstract class DbParameter : MarshalByRefObject, IDataParameter, IDbDataParameter

public abstract DbType DbType { get; set; }

public abstract ParameterDirection Direction { get; set; }

public abstract bool IsNullable { get; set; }

public abstract string ParameterName { get; set; }

public virtual byte Precision { get; set; }

public virtual byte Scale { get; set; }

public abstract int Size { get; set; }

public abstract string SourceColumn { get; set; }

public abstract bool SourceColumnNullMapping { get; set; }

public virtual DataRowVersion SourceVersion { get; set; }

public abstract object Value { get; set; }

protected DbParameter()

public abstract void ResetDbType()