用扩展方法解决
static class MyExtensions { public static void AddParameterWithValue(this DbCommand command, string parameterName, object parameterValue) { var parameter = command.CreateParameter(); parameter.ParameterName = parameterName; parameter.Value = parameterValue; command.Parameters.Add(parameter); } }来自http://social.msdn.microsoft.com/Forums/zh-
CN/d56a4710-3fd1-4039-a0d9-c4c6bd1cd22e/dbcommand-parameters-collection-
missing-addwithvalue-method
