将DTO对象值转换为String

问题描述

我有以下代码。在salesOrderDto中，我有一个名为SalesOrder的变量，其值为0（我不太确定其数据类型）。如何将SalesOrder的值转换为空字符串？以下是我的代码：

Hi, I have the following codes. Inside the salesOrderDto I have a variable called SalesOrder which value is 0(I am not quite sure of its data type). How can I convert the value of SalesOrder into a empty string? Below are my codes:

using (IDataReader dataReader = db.ExecuteReader(selectCommand))
            {
                if (dataReader.Read())
                {
                    salesOrderDto = ParseDto<SalesOrderDto>(dataReader);
                }
            }

            if (salesOrderDto.SalesOrder == 0)
            {
                //convert here
                //i have tried below method but the result is not what i want
                salesOrderDto.SalesOrder.ToString(" ");
                salesOrderDto.SalesOrderGroup.ToString(" ");
            }

推荐答案

Quote：

如何将SalesOrder的值转换为空字符串？

How can I convert the value of SalesOrder into a empty string?

当你调用ToString方法时，它只返回字符串值而不更新它，你需要的是设置一个字段或属性的值，所以你可以这样做

when you call ToString method, it only return string value not updating it, what you need is set the value of a field or property, so you can do as below

salesOrderDto.SalesOrder ="";

但是除了字符串以外，当SalesOrder还有其他类型时，上面的行会失败。

but above line will fail when you have some other type for SalesOrder other than string.

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